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Our ServicesOn October 15, 2025, at the Shenzhen Wanxin Exhibition 2025, Changzhou Tonghui Electronics Co., Ltd. officially established a strategic partnership with the National Third Generation Semiconductor Technology Innovation Center (Shenzhen) ..
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About UsChangzhou Tonghui Electronics Co., Ltd. was founded in 1994. It is a national high-tech enterprise and a national specialized and innovative small giant enterprise that integrates research and development, manufacturing, and marketing.
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Switch Type 750W/1500W/3000W
-
■ Rated output: 1000V/10A (3000W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 750V/12A (3000W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 500V/20A (3000W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 360V/30A (3000W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 200V/50A (3000W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 80V/120A (3000W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 35V/200A (3000W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 1000V/5A (1500W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 750V/6A (1500W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 500V/10A (1500W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 360V/15A (1500W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 200V/25A (1500W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 80V/60A (1500W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 35V/100A (1500W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 1000V/2.5A (750W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 750V/3A (750W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 500V/5A (750W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 360V/7.5A (750W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 200V/12.5A (750W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 80V/30A (750W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
-
■ Rated output: 40V/60A (750W)
■ The output range is 3 times of the equal power "rectangular" power supply
■ High frequency LLC multi-resonant inverter, the efficiency of the whole machine is as high as 93%
■ Active PFC, power factor up to 0.99
■ High resolution, high precision; low ripple, low noise
■ ≤2ms fast transient response
■ The rising edge and falling edge speed of the output are adjustable
■ Power supply constant voltage (CV), constant current (CC), constant power (CP) mode
■ The master-slave mode supports parallel connection, active current sharing, and parallel connection of up to 10 units of the same type
■ OVP, OCP, OPP, OTP, input undervoltage protection, SENSE terminal reverse connection protection
■ Built-in function generator
■ Equipped with discharge circuit (Uout< 10V within 1s)
■ Separate control of power output through external analog interface
■ High-brightness color LCD display
■ Flexible and powerful sequence test function
■ Support SCPI command language
■ Interface: RS232, USB HOST,
Optional (RS485, CAN, GPIB, LAN, analog control interface)
