This amplifier for recording heads was found in a Radio Electronics from September 1963. The circuit uses period transistors but can be modified to work with modern transistors.
We found this circuit in a November 1970 Radio Electronics. It uses a PUT or programmable...
In the figure we have the way to implement a NO OR or NOR gate with an operational amplifier. The...
This TTL circuit uses 5 NAND gates of 7400 integrated circuits. It must be powered with 5...