ESR Meter Modified Analog Multi Meter 150 Khz
Classic analog ESR meter is a circuit based on SN74HC14N integrated circuit, it mainly consists of 150Khz oscillator, buffer, comparator and rectifier amplifier. The maximum range is approximately 75 Ohms and values below 1 ohm will cause some difficulty in reading the position of the galvanometer pointer due to the area used on the scale…