We found this circuit that protects speakers against current surges that occur when the amplifier is turned on in a Radio Electronics from August 1991.
These reset circuits when the power is turned on were found in an 80's EDN. The circuit also...
A divide-by-4 or two-bit binary counter can also be built using two flip-flops of the 4027 type as...
This circuit was found in the Radio Electronics magazine of May 1990. The supply voltage depends on...