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
China
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Product
Electrolytic Capacitor Leakage Current Meter
TH2686C
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Changzhou Tonghui Electronic Co., Ltd.
■ Test voltage: 0-200V, 0-500V ■ Voltage accuracy: 2% set value + 2 words ■ Measuring range: 0-30mA, 10 gears ■ Current accuracy: 2% of reading +0.5 grid
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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.19ms, support low frequency and high speed: TX4+3ms
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Product
LCR Meter
TL2812D
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Changzhou Tonghui Electronic Co., Ltd.
■ 100Hz, 120Hz, 1kHz, 10kHz 4 dots ■ Basic accuracy: 0.25% ■ Test speed: the fastest 83ms ■ Output impedance 100Ω
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Product
Precision LCR Meter
TH2816B
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Changzhou Tonghui Electronic Co., Ltd.
TH2816B is a new precision LCR meter combined with years of technical experience and newest measurement technology of instrument industry. With powerful measurement functions, high performance and low cost, TH2816B has been one of the world advanced instruments, and it provides users a super value measurement resolution and experience. The meter offers stable 6 digit resolution, wide frequency range ( 50Hz to 200kHz for TH2816AB), programmable signal level (0.01V to 2.0V), up to 30 meas/sec measurement rate, 9 measurement ranges, 30Ω or 100Ω constant output impedance and friendly operation interface. TH2816B can be used for incoming inspection of components, quality control of product line and high accuracy laboratory use. The HANDLER, GPIB, RS232C interfaces make it easy to build an automatic component test system,
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Product
Impulse Winding Tester
TH2882AS-5
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Changzhou Tonghui Electronic Co., Ltd.
Due to the influence of coil wire material, magnetic material, framework and manufacture technics etc., coil products (such as transformers, motors, etc.) may have defects of low insulation between coil layers, circles and leads. TH2882A series impulse winding tester, adopting high-speed sampling technique, is a new generation analysis test instrument for insulation performance of coil products.
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Product
Impulse Winding Tester
TH2883-5
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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
Handheld Capacitance Meter
TH2622
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Changzhou Tonghui Electronic Co., Ltd.
Tonghui has extended the hanheld meter to a professional wide-range capacitance test. TH2622 handheld capacitance meter adopts ultra-low consumption design and high density SMD technology. Its measurement range can be automatically switched. The capacitance measurement range is up to 199.99mF, maximum reading 11,000. Gorgeously once molded dual-color shell, dual-display LCD screen and easy operation are the characteristics of the meter.
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Product
Precision LCR Meter
TH2816A
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Changzhou Tonghui Electronic Co., Ltd.
TH2816A is a new precision LCR meter combined with years of technical experience and newest measurement technology of instrument industry. With powerful measurement functions, high performance and low cost, TH2816A/TH2816B/TH2817A have been one of the world advanced instruments, and it provides users a super value measurement resolution and experience. The meter offers stable 6 digit resolution, wide frequency range (200kHz for TH2816A), programmable signal level (0.01V to 2.0V), up to 30 meas/sec measurement rate, 9 measurement ranges, 30Ω or 100Ω constant output impedance and friendly operation interface. TH2816Acan be used for incoming inspection of components, quality control of product line and high accuracy laboratory use. The HANDLER, GPIB, RS232C interfaces make it easy to build an automatic component test system,
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Product
LCR Meter
TH2817B+
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Changzhou Tonghui Electronic Co., Ltd.
■ Freq: 50Hz-100kHz, 10 frequency points ■ Test Accuracy: 0.1% ■ Test Speed: Max.19ms ■ 4.3 inch TFT liquid crystal display
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Product
Capacitor Leakage Current/IR Meter
TH2689
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Changzhou Tonghui Electronic Co., Ltd.
TH2689/TH2689A is a rapid and precise capacitance leakage current insulation resistance tester. The max. test speed of 18 times/second, good performance and the suitable price provide the user an optimal choice.
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Product
Automatic Transformer Test System
TH2840BX
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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
Handleld LCR Meter
TH2822A
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Changzhou Tonghui Electronic Co., Ltd.
With its advanced impedance test technology, Tonghui has launched TH2822 series handheld LCR meters. This series currently possess the most powerful functions and outstanding performance in this industry comparable with bench LCR meters. Meanwhile it is the achievement of Tonghui after years of efforts and research in the passive-component testing field.
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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
TH2838
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Changzhou Tonghui Electronic Co., Ltd.
■ Freq: 20Hz-2MHz, 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
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Product
Parallel 8-channel Hipot Tester
TH9010
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Changzhou Tonghui Electronic Co., Ltd.
8-channel parallel output of withstand voltage, and each channel is non-interfering ■ Output: AC: 5kV/10mA; DC: 6kV/5mA ■ Insulation resistance test voltage: 0.10kV -1.00kV















