This two-digit circuit was found in the 1999 Radio Experimenter Handbook. It uses the CA3161 and CA3162 A/D converter pair common at the time.
This circuit was found in a 90s Radio Electronics. The integrated circuit admits an equivalent. The...
Suggested by Radio Electronics from the 90s, this circuit is suitable for NiCAd batteries with a...
To control direct current loads, under voltages between 12 and 200 V, and currents up to 3 A, we...