Capacitor ESR Meter using only 5 transistors !

ESR meter - Wikipedia

Lcr-t4 Esr Meter Transistor Tester Diode Triode Capacitance Mos Transistor Tester Scr Inductance Tester - Multimeters - AliExpress

Testing the 5 Transistor ESR Meter with a variable resistor 0-10 Ohm

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MG328 Transistor Tester ESR Meter Inductor-capacitor Meter ESR DIY MG328 Multifunction With Test Line

5 Transistor ESR Meter Design

5 Transistor ESR Meter Design

This LCR-T7 Transistor Tester Built-in high capacity rechargeable lithium ion battery. Lithium ion battery voltage detection. Used to detect NPN and

LCR-T7 Transistor Tester TFT Diode Triode Capacitance Meter LCR ESR Meter for Measuring Triodes Diodes Resistors Capacitors, Inductors, Thyristors

GME Professional in Circuit ESR Capacitor Tester, Capacitance Meter, Designed and Engineered in the USA: : Industrial & Scientific

Wholesale High Quality LCR ESR Tester With Transistor Inductance, Capacitance, And Low Ohm Resistance Tester From Allmall, $79.22

Capacitor ESR Meter using only 5 transistors !