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 a very common circuit in the days of xenon flashes for cameras. This is from a Radio...
Connected to a shortwave receiver, this circuit is intended to enable the decoding of signals in...
We found this circuit in the On Semiconductor thyristor manual. He makes use of a triac and a PUT....