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Guangzhou Katoy Electronics Co., Ltd. is a professional custom transformer and magnetic component manufacturer based in Panyu, Guangzhou, China. We specialize in the design, development and production of a full range of magnetic products including audio transformers, low-frequency transformers, high-frequency transformers, toroidal transformers, inductors, reactors, single-phase & three-phase transformers and instrument transformers.<br/>With an in-house R&D engineering team and automated production facilities, we provide one-stop solutions from prototype development to mass production for global clients. Our products are widely applied in industrial power supplies, new energy systems, audio equipment, industrial control, instrumentation and telecommunications industries. Adhering to strict quality control standards and full inspection procedures, we serve customers across Europe, the Middle East, Southeast Asia and the Americas with reliable products, competitive pricing and responsive technical support.
020-32031188
Guangzhou KATOY Electronics Co., Ltd.

SQ Common Mode Choke

Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available.
This SQ flat common mode choke adopts low-profile SQ dual-column magnetic core and symmetrical double winding structure. Ultra-low body height saves PCB vertical space, perfectly matching slim power adapters, thin industrial power supplies and compact SMPS equipment.
It effectively suppresses common-mode electromagnetic interference at AC input to s

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Leaded Three-Phase Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom leaded three-phase common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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Compact Base-Mount Toroidal Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom compact base-mount toroidal common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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Bracket-Mount Toroidal Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom bracket-mount toroidal common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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Heavy-Gauge Toroidal Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures heavy-gauge toroidal common-mode chokes for common-mode noise suppression and conducted EMI filtering in higher-current power lines. Inductance, rated current, DC resistance, core material, wire gauge, and mounting can be customized.

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UU-Core Vertical Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom uu-core vertical pcb-mount common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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Single-Core PCB-Mount Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom single-core pcb-mount common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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Horizontal PCB-Mount Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom horizontal pcb-mount common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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PCB-Mount Toroidal Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom pcb-mount toroidal common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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Mounted Toroidal Common-Mode Choke
Inductors are essential magnetic components used for power conversion, filtering, energy storage, current smoothing, and EMI suppression. KATOY Electronics supplies common mode chokes, differential mode inductors, toroidal inductors, and other custom inductors featuring low power loss, low temperature rise, stable performance, and effective noise suppression. They are widely used in industrial power supplies, renewable energy and energy storage systems, welding equipment, industrial automation, professional audio, and test equipment. Custom core materials, winding configurations, mechanical structures, and OEM/ODM development are available. KATOY manufactures custom mounted toroidal common-mode chokes for common-mode noise suppression and conducted EMI filtering in power lines. Inductance, rated current, DC resistance, core material, winding design, and mounting can be customized.

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EI-Core Dual-Channel Audio Isolation Transformer
Audio transformers are one of KATOY Electronics’ core product lines. Designed for audio signal transmission, impedance matching, electrical isolation, and noise suppression, they help improve audio system stability and sound quality. Our custom audio transformers are widely used in professional audio systems, mixing consoles, power amplifiers, broadcasting equipment, recording devices, and high-end audio applications. Multiple specifications and OEM/ODM customization services are available. KATOY manufactures custom EI-core dual-channel audio isolation transformers for two-channel signal isolation and transmission. Channel specifications, impedance, frequency response, connectors, and lead harnesses can be customized.

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Miniature EI-Core Audio Isolation Transformer
Audio transformers are one of KATOY Electronics’ core product lines. Designed for audio signal transmission, impedance matching, electrical isolation, and noise suppression, they help improve audio system stability and sound quality. Our custom audio transformers are widely used in professional audio systems, mixing consoles, power amplifiers, broadcasting equipment, recording devices, and high-end audio applications. Multiple specifications and OEM/ODM customization services are available. KATOY manufactures miniature EI-core audio isolation transformers for signal isolation, coupling, and noise control. Impedance, frequency response, turns ratio, insulation, and lead configuration can be customized.

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EI-Core Multi-Tap Audio Transformer
Audio transformers are one of KATOY Electronics’ core product lines. Designed for audio signal transmission, impedance matching, electrical isolation, and noise suppression, they help improve audio system stability and sound quality. Our custom audio transformers are widely used in professional audio systems, mixing consoles, power amplifiers, broadcasting equipment, recording devices, and high-end audio applications. Multiple specifications and OEM/ODM customization services are available. KATOY manufactures custom EI-core multi-tap audio transformers for audio signal transmission and selectable impedance matching. Tap configuration, impedance, power rating, frequency response, and lead harness can be customized.

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EI-Core Audio Filter Inductor
Audio transformers are one of KATOY Electronics’ core product lines. Designed for audio signal transmission, impedance matching, electrical isolation, and noise suppression, they help improve audio system stability and sound quality. Our custom audio transformers are widely used in professional audio systems, mixing consoles, power amplifiers, broadcasting equipment, recording devices, and high-end audio applications. Multiple specifications and OEM/ODM customization services are available. KATOY manufactures custom EI-core audio filter inductors for audio-frequency filtering and noise suppression. Inductance, rated current, DC resistance, frequency range, lead configuration, and mounting can be customized.

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EI-Core Constant-Voltage Audio Transformer
KATOY manufactures custom EI-core constant-voltage audio transformers for audio signal transmission and impedance matching. Input voltage, output impedance, power rating, frequency response, lead configuration, and mounting can be customized.

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EI Low Frequency Power Transformer
EI silicon steel low frequency isolation transformer for voltage conversion, widely used in household appliances and industrial control power supply, customizable power and voltage. Keywords: EI transformer,low frequency transformer,isolation transformer,power transformer,50hz transformer

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EI Low Frequency Isolation Transformer
EI core low frequency AC transformer for mains voltage transformation, applied for instrumentation and industrial equipment, customized specifications available.

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Ultra-Compact Multi-Lead EI Transformer
Low-Frequency Transformers are designed for industrial control equipment, power supplies, medical devices, test instruments and automation systems. They provide stable output, reliable insulation, low temperature rise and dependable long-term operation. Custom designs are available to meet specific application requirements. KATOY manufactures ultra-compact multi-lead EI transformers for equipment with limited space and application-specific wiring. Electrical ratings, dimensions, lead configuration, and insulation design can be customized.

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Miniature Leaded EI Transformer
Low-Frequency Transformers are designed for industrial control equipment, power supplies, medical devices, test instruments and automation systems. They provide stable output, reliable insulation, low temperature rise and dependable long-term operation. Custom designs are available to meet specific application requirements. KATOY manufactures miniature leaded EI transformers for voltage conversion, power supply, or isolation in compact equipment. Voltage ratings, power, dimensions, lead length, and connectors can be customized.

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Miniature Multi-Winding EI Transformer
Low-Frequency Transformers are designed for industrial control equipment, power supplies, medical devices, test instruments and automation systems. They provide stable output, reliable insulation, low temperature rise and dependable long-term operation. Custom designs are available to meet specific application requirements. KATOY manufactures miniature multi-winding EI transformers for space-constrained equipment requiring multiple outputs or signal conversion. Input/output ratings, winding configuration, dimensions, leads, and insulation can be customized.

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EI Chassis-Mount Low-Frequency Transformer
Low-Frequency Transformers are designed for industrial control equipment, power supplies, medical devices, test instruments and automation systems. They provide stable output, reliable insulation, low temperature rise and dependable long-term operation. Custom designs are available to meet specific application requirements. KATOY manufactures custom EI chassis-mount low-frequency transformers with mounting brackets and lead wires. Voltage ratings, power, winding configuration, lead harness, and mounting dimensions can be customized.

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Potted PCB-Mount EI Transformer
Low-Frequency Transformers are designed for industrial control equipment, power supplies, medical devices, test instruments and automation systems. They provide stable output, reliable insulation, low temperature rise and dependable long-term operation. Custom designs are available to meet specific application requirements. KATOY manufactures custom potted PCB-mount EI transformers for improved mechanical stability and environmental resistance. Input/output ratings, power, potting material, pin layout, and dimensions can be customized.

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EI Transformer Assembly with Adjustment Component
Low-Frequency Transformers are designed for industrial control equipment, power supplies, medical devices, test instruments and automation systems. They provide stable output, reliable insulation, low temperature rise and dependable long-term operation. Custom designs are available to meet specific application requirements. KATOY manufactures custom EI transformer assemblies with external adjustment components for application-specific equipment designs. Transformer ratings, adjustment components, wiring, and mounting structure can be customized.

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Multi-Pin PCB-Mount EI Transformer
Low-Frequency Transformers are designed for industrial control equipment, power supplies, medical devices, test instruments and automation systems. They provide stable output, reliable insulation, low temperature rise and dependable long-term operation. Custom designs are available to meet specific application requirements. KATOY manufactures custom multi-pin PCB-mount EI transformers for multi-winding and multi-connection designs. Input/output ratings, pin assignments, power, insulation, and mounting dimensions can be customized.

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EE-Core High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom EE-core high-frequency transformers for energy transfer and isolation in high-frequency power supplies. Core size, frequency, winding design, power, pin layout, and mounting structure can be customized.

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Low-Profile Horizontal High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom low-profile horizontal high-frequency transformers for power supplies and electronic equipment with height constraints. Core, operating frequency, winding design, power, pin layout, and insulation can be customized.

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ER-Core Leaded High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom ER-core leaded high-frequency transformers for low-profile power supplies and flexible wiring. Frequency, winding design, power, wire type, lead length, and terminal configuration can be customized.

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Slim EE-Core Vertical High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom slim EE-core vertical high-frequency transformers for PCB layouts with limited board space. Core size, frequency, winding design, power, pin pitch, and insulation can be customized.

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EE-Core Vertical High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom EE-core vertical high-frequency transformers for high-frequency power conversion and isolation. Operating frequency, winding design, power, insulation, pin layout, and overall dimensions can be customized.

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PQ-Core Vertical High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom PQ-core vertical high-frequency transformers for power supplies requiring high power density and efficient winding-window utilization. Core size, frequency, winding design, power, pin layout, and insulation can be customized.

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Dual-Section Horizontal High-Frequency Magnetic Component
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom dual-section horizontal high-frequency magnetic components configured as transformers or filtering components according to the circuit design. Core, winding connection, frequency, inductance or turns ratio, pin layout, and insulation can be customized.

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EE-Core Horizontal PCB-Mount High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom EE-core horizontal PCB-mount high-frequency transformers for low-profile board assembly. Operating frequency, winding design, power, pin layout, and insulation structure can be customized.

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EE-Core Leaded High-Frequency Transformer
High-Frequency Transformers are widely used in switch-mode power supplies (SMPS), inverters, telecom power supplies, battery charging systems, renewable energy equipment and industrial control applications. They offer high efficiency, low core loss, compact construction and reliable performance. Each transformer is engineered to meet specific electrical and mechanical requirements. KATOY manufactures custom EE-core leaded high-frequency transformers for flexible wiring or off-board installation. Operating frequency, winding design, power, wire type, lead length, and terminals can be customized.

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Bracket-Mount Toroidal Autotransformer
KATOY manufactures custom bracket-mount toroidal autotransformers for AC voltage conversion and equipment power applications. Input and output voltage, VA rating, tap configuration, wire gauge, lead arrangement, and mounting brackets can be customized. As an autotransformer, it does not provide galvanic isolation between input and output.

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Clamp-Mount Toroidal Transformer
Toroidal Transformers feature low magnetic leakage, high efficiency, low noise, low temperature rise and compact construction. They are widely used in professional audio equipment, medical devices, industrial control systems, power supplies and precision electronic instruments. KATOY manufactures custom clamp-mount toroidal transformers with center-bolt fixing, metal clamping plates, and insulating pads for secure chassis installation. Voltage, VA rating, winding configuration, clamp dimensions, mounting hardware, leads, and insulation can be customized.

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Multi-Winding Leaded Toroidal Transformer
Toroidal Transformers feature low magnetic leakage, high efficiency, low noise, low temperature rise and compact construction. They are widely used in professional audio equipment, medical devices, industrial control systems, power supplies and precision electronic instruments. KATOY manufactures custom multi-winding leaded toroidal transformers with multiple voltage outputs or independently configured windings. Input/output voltage, VA rating, winding configuration, wire type, lead length, terminals, and insulation system can be customized.

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Compact Leaded Toroidal Transformer
Toroidal Transformers feature low magnetic leakage, high efficiency, low noise, low temperature rise and compact construction. They are widely used in professional audio equipment, medical devices, industrial control systems, power supplies and precision electronic instruments. KATOY manufactures custom compact leaded toroidal transformers for equipment with limited installation space. Input/output voltage, VA rating, dimensions, winding configuration, wire type, lead length, and insulation can be customized.

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Toroidal Transformer with Connector Harness
Toroidal Transformers feature low magnetic leakage, high efficiency, low noise, low temperature rise and compact construction. They are widely used in professional audio equipment, medical devices, industrial control systems, power supplies and precision electronic instruments. KATOY manufactures custom toroidal transformers with preassembled connector harnesses for efficient equipment integration and reduced field wiring. Input/output voltage, VA rating, winding configuration, connector type, wire type, lead length, and pin assignment can be customized.

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Base-Mount Toroidal Transformer
Toroidal Transformers feature low magnetic leakage, high efficiency, low noise, low temperature rise and compact construction. They are widely used in professional audio equipment, medical devices, industrial control systems, power supplies and precision electronic instruments. KATOY manufactures custom base-mount toroidal transformers with metal mounting plates for secure installation in chassis and equipment. Voltage, VA rating, winding configuration, leads, base dimensions, and mounting-hole positions can be customized.

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Copyright © 2024 Guangzhou KATOY Electronics Co., Ltd. All Rights Reserved.
Katoy Electronics – Custom transformer and magnetic component manufacturer in Guangzhou, China. Reliable quality, custom solutions and global export support.Power inductor and common mode choke for EMI filtering,Line reactor for VFD drives and renewable energy systems
Email: daniel@gzkatoy.com
Tel: +86 20 3203 1188
Address: No. 28-1, Gongye 1st Road, Tanshan Village, Hualong Town, Panyu District, Guangzhou, China
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