Changzhou Tonghui Electronic Co., Ltd.
Changzhou Tonghui Electronic Co. Ltd. was founded in 1994. It is a provincial high-tech enterprise integrating R&D, manufacturing and marketing. It is located in the National Development Zone – Changzhou Hi-tech Industry Development Zone with superior geographical position and beautiful natural environment. Covering a land area of 14000 m2 with construction area of 8200 m2 (A new plant with 30000 m2 land area and 30000 m2 construction area in the first phase is under construction). The company has more than 180 employees. More than 70% have college education or above. R&D personnel takes up more than 25% of total employees, and annual R&D investment exceeds 10% of company’s annual revenue. For the past more than 20 years, Tonghui has been devoting itself to the research and development of electronic measurement instruments. Bearing the faith of technology first, we are struggling to promote the development of domestic measurement instruments and minimize the distance with the world advanced instruments. The company establishes “Changzhou electronic component measuring instrument engineering research center”, which has undertaken the ministry/province/city/district science and technology project for many times, and won the provincial/city science and technology progress award for many times. As a result of years of effort, Tonghui has grown to be a well-known brand in electronic instrument industry.
- +86-519-8519-5566
- 0519-85109972
- lq@tonghui.com.cn
- No.1 Xinzhu Road,
Xinbei District,
Changzhou, Jiangsu 213031
China
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Product
LCR Meter
TH2817C
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Changzhou Tonghui Electronic Co., Ltd.
■ Freq: 50Hz-100kHz, 10 frequency points ■ Test Accuracy: 0.1% ■ Test Speed: Max. 50ms ■ Dedicated white backlit LCD display
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Product
Precision LCR Meter
TH2838A
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Changzhou Tonghui Electronic Co., Ltd.
■ Freq: 20Hz-1MHz, resolution: 0.1mHz max. ■ Test Accuracy: 0.05% ■ Test Speed: Max.5.6ms ■ Auto-balance bridge technology, 4-terminal pair ■ High stability and consistency: up to 15 test ranges ■ High resolution: 7-inch, 800*600
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Product
Precision LCR Meter
TH2840B
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Changzhou Tonghui Electronic Co., Ltd.
■ Test frequency: 20Hz-2MHz ■ High stability and consistency: 14 range configurations ■ High power: signal level: 20VAC/100mAAC
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Product
Precision Impedance Analyzer
TH2851-015
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Changzhou Tonghui Electronic Co., Ltd.
■ Test frequency: 10Hz-15MHz ■ High precision: using automatic balance bridge technology, four-terminal pair test configuration
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Product
Electrolytic Capacitor Leakage Current Meter
TH2686N
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Changzhou Tonghui Electronic Co., Ltd.
■ Test voltage: 0-200V, 0-500V ■ Voltage accuracy: 1% set value + 1 word ■ Measuring range: 10nA-19.99mA, resolution: 1nA ■ Current accuracy: 2% reading + 2 words ■ Intelligent type, microprocessor control
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Product
High Precision IR Tester
TH2684
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Changzhou Tonghui Electronic Co., Ltd.
TH2684 High Precision IR Tester is an intelligent measurement instrument that is used for rapid measurement on IR Tester is an intelligent measurement instrument that is used for rapid measurement on IR properties of electronic parts and components, dielectric materials, equipments, cables, etc. Large LCD and user friendly menu provide you easier operation.
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Product
Handleld LCR Meter
TH2821B
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Changzhou Tonghui Electronic Co., Ltd.
■ 100Hz, 120Hz, 1kHz ■ Basic accuracy: 0.3% ■ Test speed: 333ms ■ Simultaneous display of primary and secondary parameters
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Product
Precision Impedance Analyzer
TH2851-130
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Changzhou Tonghui Electronic Co., Ltd.
■ Test frequency: 10Hz-130MHz ■ High precision: using automatic balance bridge technology, four-terminal pair test configuration ■ High stability and consistency ■ High speed: the fastest test speed up to 5ms
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Product
Impulse Winding Tester
TH2883-1
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Changzhou Tonghui Electronic Co., Ltd.
TH2883 series products are newly developed impulse winding testers by Tonghui. This product line makes Tonghui as the first provider of impulse winding tester from low voltage of 30V to high voltage of 10kV, single channel to multichannel (Max.:8 channels) in this industry. The instrument adopts popular 32 bit CPU and high density SMD technology, 65k color 7-inch TFT wide display screen, bringing ease for your eyes and convenience to your operation. The minimum impulse voltage of 30V, maximum impulse voltage output of 10kV, winding test of 1uH inductance value, sampling rate of 200Msps, memory depth of 6k bytes makes your test accurately. The usage of standard sample average, application of demagnetized impulse, high bandwidth analog acquisition circuit, technology of high-fidelity corona extraction as well as the opening of non-destructive test reflect the design philosophy “customer-oriented, share the future technology with you” of Tonghui.
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Product
Automatic Transformer Test System
TH2840AX
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Changzhou Tonghui Electronic Co., Ltd.
■ The test speed is as high as 1000 times/s (>10kHz), without relay action time ■ Test level up to 20Vrms ■ The bias voltage is built-in ±40V/±100mA/2A ■ Up to 288 test pins (only TH2840NX) ■ Industry-friendly user experience: Linux bottom layer, built-in help file
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Product
Capacitor Leakage Current/IR Meter
TH2689A
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Changzhou Tonghui Electronic Co., Ltd.
TH 2689/TH2689A provides max. test voltage: 800v/500v, charge current: 0.5mA─500.0mA( if >100V, the max. power 50W can limit). It is mainly applied in capacitance leakage current, insulation resistance and aluminum electrolysis capacitance anode foil pressure test. Also it can be applied in the confirmation of annihilator, zener diode, neonbulb .etc and leakage current test. Standard Handler interface, stable and rapid test, to reach the sorting effect
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Product
Automatic Transformer Comprehensive Test System
TH2837LX
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Changzhou Tonghui Electronic Co., Ltd.
Automatic Transformer Comprehensive Test System
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Product
AC/DC Withstanding Voltage& Resistance Tester
TH9201B
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Changzhou Tonghui Electronic Co., Ltd.
TH9201 AC/DC withstanding voltage & insulation tester is a kind of Hipot Tester. Due to simple and compact structure, mature technique, brand new structure and operating interface, the operation becomes more convenient, and more practical functions are included as well. TH9201S can be widely applied in transformer, device, component especially for winding safety inspection.Withstanding voltage test
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Product
4 1/2 Digit true RMS Digital Multimeter
TH1941
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Changzhou Tonghui Electronic Co., Ltd.
Digital multimeter TH1941 4 1/2-digit is voltage/current/resistance tester with multi functions and low cost. The instrument can stably perform measurement at high speed as several times as other instruments at the same level. It provides excellent performance, such as maximum reading of 21,000 counts, maximum DC voltage accuracy of 0.02%, and low cost to give you a best choice.
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Product
High Precision IR Tester
TH2684A
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Changzhou Tonghui Electronic Co., Ltd.
TH2684 High Precision IR Tester is an intelligent measurement instrument that is used for rapid measurement on IR Tester is an intelligent measurement instrument that is used for rapid measurement on IR properties of electronic parts and components, dielectric materials, equipments, cables, etc. Large LCD and user friendly menu provide you easier operation.















