Tester LCR-T4 Russian firmware, RLC, ESR-meter, diode, transistor tester

Automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, resistors and capacitors, determines the polarity and types of pins. Test time 1-2 seconds (except for large capacitors). One control button. Automatic shutdown.

Specifications:
LCD screen 128*64 dots
Firmware on the ATmega328 chip - 2.07w
Resistance: 0.1Ω - 50MΩ
Capacitance: 25pF - 100000uF
Inductance: 0.01mH-20H
Supply voltage: Krona 9V (6F22)
Standby current: 0.02uA
Working current: 25mA

Calibration:
Like any other measuring instrument, the LCR-T4 requires periodic calibration. The developers have greatly simplified this procedure and you do not need special expensive equipment for this.

Before starting calibration, prepare a three-pin jumper with a pitch of 2.54 mm and a good quality non-electrolytic capacitor with a capacity greater than 0.1 microfarads. Metal film capacitors of 0.15, 0.22, 0.33 uF are perfect.

Install a jumper in the test socket in contacts 1-2-3 and press the button. The tester, having determined the jumper, will begin self-calibration. The progress of the calibration will be shown on the display. About halfway through the process, the procedure will stop and you will be prompted to remove the jumper. Remove it and calibration will automatically resume. After a short time, the tester will offer to install a capacitor in 1-3 contacts. Insert the capacitor and fix it. A few more seconds and the calibration will be over. The result will be a display of the parameters of the installed capacitor.