This is the 1968 MR480 commercial cassette recorder circuit. The circuit was fully transistorized and powered by 4 large batteries. We found the diagram in a Japanese documentation of the time.
We found this circuit in an 80's Radio Electronics. The circuit uses a PTC sensor and an LED...
September 2016 - can be purchased from Mouser Electronics the new transceivers MAX348x and MAX349x from...
This circuit is from the National Semiconductor FET Databook. It is possible to shift the phase of a...