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
Categories
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product
Handleld LCR Meter
TH2821B
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
TH2851-015
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
TH2686C
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
Precision Impedance Analyzer
TH2851-030
Changzhou Tonghui Electronic Co., Ltd.
■ Test frequency: 10Hz-30MHz ■ High precision: using automatic balance bridge technology, four-terminal pair test configuration
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product
Automatic Transformer Test System
TH2840NX
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
Precision LCR Meter
TH2840A
Changzhou Tonghui Electronic Co., Ltd.
■ Test frequency: 20Hz-500kHz ■ High stability and consistency: 14 range configurations
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product
Precision Impedance Analyzer
TH2851-080
Changzhou Tonghui Electronic Co., Ltd.
■ Test frequency: 10Hz-80MHz ■ High precision: using automatic balance bridge technology, four-terminal pair test configuration
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product
Handleld LCR Meter
TH2822C
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
Handleld LCR Meter
TH2822E
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
Capacitor Leakage Current/IR Meter
TH2689
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
Capacitor Leakage Current/IR Meter
TH2689A
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 Test System
TH2829NX
Changzhou Tonghui Electronic Co., Ltd.
Number of Test PIN: 72/96/120/144/168/192 ■ Frequency: 20Hz-200kHz, Resolution: 0.5mHz ■ Signal Level: 5mV-2Vrms(Option:2mV-10Vrms) ■ Test Speed: max. 13ms ■ 7-inch TFT LCD display with a resolution of 800×RGB×480
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product
Precision Capacitance Meter
TH2638
Changzhou Tonghui Electronic Co., Ltd.
TH2638 series is a new precision capacitance meter with higher test frequency. With small size and portable appearance, it is convenient for use on the shelves. With basic accuracy of ±0.07%, loss accuracy of 0.0005, test frequency up to 1MHz, 4.3-inch LCD screen, selectable Chinese-English operation interface, TH2638 series is easy to operate and provide fast and reliable test for ceramic capacitor production. Also, it can test all kinds of capacitors from low value to high value. The results of testing one capacitor for several times are quite stable and accurate, even for lower value capacitors. The tester is compatible with SCPI command set, and configured with manipulator and scanner interface, the scanner interface can scan the open/short/ load error calibration in each channel, 256 channels at most. In low frequency, there is signal level compensation function. When the impedance is very small, the internal resistance in signal source and test cable will cause the voltage on terminal of DUT lower than the set range, then this function will adjust the level to the set range.
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product
Precision LCR Meter
TH2816A
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
Handheld Capacitance Meter
TH2622
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.















