This 2-quadrant modulator circuit was found in the May 1988 issue of Radio Electronics magazine. The CA3080 is an OTA operational amplifier.
A negative pulse applied to the input of the circuit shown in figure bellow turns on the relay....
This dual control was based on Texas Instruments documentation for the CD4050. The circuit has two...
This radiation detector was found in an American publication from the 60's. The circuit uses a...