Found in the October 1979 Radio Electronics magazine, the purpose of this circuit is to monitor the coolant level in a car's radiator. The circuit is based on the LM1830.
This is the suggested transmitter circuit for the CB16880E. The emitting LED must be a...
This timer activates a relay after a time interval of up to 15 minutes has elapsed, starting from...
This powerful regulator, shown in the figure is for 5V (TTL) is suggested by Motorola and makes use...