Found in a 90s 73 magazine, this circuit provides an output of 1.5 A with 24 V from a 12 V source. The integrated circuit of the time must be equipped with a heat sink.
I found this circuit in a 1974 magazine, but it can still be easily assembled because the...
This circuit transmits in the FM band. It is a good range FM transmitter found in a 90's Silicon...
A flash of light directed at the LDR causes the SCR to fire and the motor to be activated in the...