TONGHUI ELECTRONIC
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TONGHUI ELECTRONIC Catalog for Measure and Test Products Since 1994

■ 2002 TH2816 and TH2820 LCR meters won in the international bidding of the project of “World Bank High Education Development and Reform”. 2002 Program of TH2818 Automatic Component Analyzer was affirmed to be financed by “Innovation Fund for Small Technology Based Firms” of Ministry of Science and Technology of People's Republic of China. 2002 Tonghui passed ISO9000: 2000 Quality Management System Certificate. 2003 High-performance TH2818XA/XB Automatic Transformer Testing System with absolutely independent intellectual property launched into market. ■ 2003 The company...

CHANGZHOU TONGHUI ELECTRONIC CO.,LTD. Http://www.tonghui.com.cn ■ Changzhou Tonghui Electronic Co., Ltd. was founded in 1994. It is a privately -owned technology-based company of research and development, manufacture and marketing. It has been appraised as the “High-Tech Enterprise in Jiangsu Province”. It is located in the National Development Zone-Changzhou Hi-Tech Industry Development Zone with beautiful environment and convenient traffic.Covering a land area of 12,000 square meter with a construction area of 8,200 square meter,it has more than 120 employees,and 75% of them are...

New Product Introduction A. Component Parameter Test Instruments P1 LCR Meter TH2838 Series Precision LCR Meter C € TH2829 Series of Automatic Component Analyzer ^ € TH2827 Series of Precision LCR Meter < € TH2828/TH2828A Precision LCR Meter C € TH2828S Automatic Component Analyzer < € TH2826/TH2826A LCR Meter C € TH283X Series Compact LCR Meter <€ TH2816A/TH2816B/TH2817A Precision LCR Meter TH2817B/TH2817C LCR Meter TH2817CX LCR Meter TH2825A High Speed LCR Meter ££ TH2810D/TH2811D LCR Meter £ £ TH2822 Series Handheld LCR Meter Capacitance Meter TH2638/TH2638A Precision Capacitance...

C. Power Electric Tester TH62XX DC Power Supply TH64XX Triple Programmable DC Power Supply P42 C € TH8100 Series DC Electronic Load P43 TH3311 Series Digital Power Meter P44 TH7100 Series Programmed AC Power Supply P45 E. Safety Tester/Hipot Tester TH9520 Winding Component EST Tester TH9010 Parallel 8-channel Hipot Tester TH9110/A Hipot Tester £ £ TH9200 Series Hipot Tester ££ TH9320-S4/TH9320-S8 Hipot Tester C £ TH9310/TH9320 Series Hipot Tester Resistance Tester [AC/DC Low-Ohm Meter (. € TH2515 DC Resistance Meter P53—P54 Insulation Resistance Meter t€ TH2683A/B Insulation...

Catalog 2017 New Product Introduction TH2838 Series Precision LCR Meter TH3311 Series Digital Power Meter TH7100 Series Programmed AC Power Supply TH9520 Winding Component EST Tester TH9010 Parallel 8-channel AC/DC Withstanding Voltage & Insulation Resistance Tester Digit Multimete

A. ITH2838 Series Precision LCR Meter Features ■ High accuracy:Adopt Auto-balance bridge technology, 4-terminal pair ■ High stability and consistency:Up to 15 ranges ■ High speed:Up to 5.6ms ■ High resolution:?- inch, 800*600 ■ High power: Signal source:Voltage up to 20Vrms(only TH2838H) Current up to 100mA(only TH2838H) DC bias:Voltage up to±40V(only TH2838H) Current up to 100mA Up to 120A when controlling 6 sets of TH1778 series DC Bias Current Source by external DC Bias interface Independent Voltage Source: ±10V programmable output (only TH2838H) ■ 201 Points List Sweep Function ■...

A. ITH2838 Series Precision LCR Meter

A. ITH2838 Series Precision LCR Meter Voltage source

A. ITH2838 Series Precision LCR Meter Turn Ratio (extension pending)

A. ITH2829 Series of Automatic Component Analyzer Features ■ 800xRGBx480 7-inch TFT LCD display ■ Basic accuracy: 0.05% ■ Test signal frequency of 1MHz, resolution of 1mHz, 5-digit frequency input ■ Strongest signal source selection: 10V/100mA programmable AC test level 10V/100mA programmable DC bias supply 10V/50mA standalone DC voltage source 1A interior DC bias current source (optional) 120A external bias source (optional) ■ Maximum test speed: 9ms/time ■ Simultaneous display of 4 kinds of test parameters ■ 201 -point list sweep function ■ Continuous curve scanning/graphical analysis...

A. ITH2829 Series of Automatic Component Analyzer Basic accuracy Graphical analysis

A. ITH2827 Series of Precision LCR Meter Features ■ 4.3-inch TFT LCD display ■ Selectable Chinese and English operation interfaces ■ Maximum test frequency of 1MHz, resolution of 10mHz ■ Transformer parameter test function ■ Maximum test speed: 13ms/time ■ Automatic level control (ALC) function for V and I ■ Test signal level monitor function for V and I ■ Included interior DC bias source ■ External DC bias source of large current ■ 10-point list sweep function ■ Selectable internal resistance of 300, 500 and 1000 ■ Built-in comparator:10-bin sorting and bin counter ■ Internal file storage...

A. ITH2827 Series of Precision LCR Meter Basic accuracy List sweep

AJTH2828/TH2828A Precision LCR Meter TH2828S Automatic Component Analyzer Features ■ Auto balancing bridge method with the widest impedance measurement range ■ 4-terminal pair configuration to eliminate electromagnetic couple of test leads ■ Basic accuracy: 0.05 %( TH2828/TH2828S), 0.1 %( TH2828A) ■ Maximum test frequency up to 1 MHz ■ AC test signal programmable to 20V (optional) ■ Maximum measurement speed up to 30 meas/sec ■ 6-digit display resolution ■ 22 parameter combinations available ■ Output signal Impedance: 30 0 and 100 0 selectable ■ 10 points list sweep function ■ Internal DC...

AJTH2828/TH2828A Precision LCR Meter TH2828S Automatic Component Analyzer Measurement signal mode Measurement Display Range HIGH/IN/OUTdecision output for each point in the list sweep table List sweep comparator Input protection Internal circuit protection, when a charged capacitor is connected to the Unknown terminals. The maximum capacitor voltage can be calculated: Vmax=1//C where: Vmax <200V C is in Farads Other Function 20 instrument setting files can be stored/ loaded from the internal non-volatile memory. 40 additional setting files can also be stored/ loaded from USB disk(only...