Leuchtenkontrolle (für Autolampen, Spannungsabfall an Widerstand auswerten)

The frequency meter is suitable for any sinusoidal or pulse input signal. The minimum input voltage amplitude at which the circuit still functions satisfac- torily is 25 mV r.m.s. The measuring range of the circuit is from 10 Hz to 100 kHz depending on the setting of switch S l . Each setting is calibrated with a 20 k potentiometer.