Found in a 80s American documentation, this circuit pulses a lamp for optical relay tests. The circuit can be modified to trigger a high brightness white LED.
Found in Motorola's 1965 manual, this full-wave dimmer controls a load that depends on the used...
The two adding and differentiating circuits with operational amplifiers given below were obtained from...
This sophisticated circuit was found in the November 1978 issue of Radio Electronics magazine. Based on...