This converter for WWV time reference station signals was found at Popular Electronics. The 15 MHz signals are now received on a medium wave radio at 1 MHz.
This TTL bistable or flip-flop with the 7400 was found in an 80's publication. It is a didactic...
This circuit amplifies the signals of an operational amplifier with output values that depend on...
In the figure we have the simple way to use a low current switch or sensor to drive a high power...