Using a sensor from the time, this circuit was found in the 1992 Radio Electronics Handbook magazine. The circuit uses a pair of integrated two-digit A/D converters.
This circuit was found in the June 1969 issue of Radio Electronics magazine. The circuit uses a...
This is one of many configurations with a 4-input mixer transistor that can be found on this...
This is a simple rheostat circuit for motor control that works with voltages from 6 to 12 V. The...