Multifunction Digital Electronic Component Tester | ESR Meter, Capacitance Meter, Frequency Generator

Electronic Component Tester ESR Meter Capacitor Meter Frequency Generator Digital

Multifunctional transistor tester for automatic detection of NPN and PNP transistors, FETs, diodes, dual diodes, thyristors, SCR, with automatic identification of the transistor’s pinout.

Includes a frequency generator, voltmeter, and IR encoder, all integrated into a single ATMEGA328P DIP-28 chip. It features a 160×128 pixel color screen with graphical display for the tested component symbols.

• Switching via rotary switch and one-button measurement
• Automatic power-off to save energy
• Powered by a 9V battery or external adapter
• Current consumption of approximately 30mA in operation and 20nA in standby

Main Testing Functions

• Automatic detection of NPN, PNP transistors, FETs, diodes, dual diodes, thyristors, and pin identification
• Measurement of the common emitter current gain (HFE)
• Testing of emitter-base threshold voltage and collector-emitter leakage current
• Identification of Darlington transistors
• Detection of built-in protection diodes in transistors and FETs
• Testing of source and leakage parameters in FETs
• Simultaneous measurement of up to 2 resistors, including adjustable resistors
• Maximum resistance measurement resolution: 0.01Ω, up to 50MΩ
• Capacitor measurement range: 25pF – 100mF, with 1pF resolution
• ESR (Equivalent Series Resistance) measurement for large capacitors (over 90nF)
• Display of capacitor voltage decay rate over 5000pF to determine the Q factor
• Simultaneous measurement of up to 2 diodes, displaying polarity and forward voltage
• Detection and graphical display of LED and Zener diode symbols
• Measurement of the reverse capacitance of PN junctions in diodes and transistors
• Measurement of inductance for resistances under 2100Ω, range 0.01mH – 20H

Technical Details

Note: Before testing capacitors, discharge them completely to avoid damaging the tester’s microchip.