Analog Esr Meter Schematic. The gain of this stage is set by r17 r18 and r19. Schematic of esr meter electrolytic capacitor tester.
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Very simple yet very useful piece of test equipment. Rib led 1 aøkhz 2. The gain of this stage is set by r17 r18 and r19.
With it open an esr of five ohms is required to drive the meter to full scale.
The circuit is divided into two parts. The latter is a 10k ohm trimmer potentiometer used to set the calibration of the esr meter after the circuit is built. Rib q2 an39ø4 capaci ton shorted leaky indication circuit 1 r2ø 68 led. Very simple yet very useful piece of test equipment.
