Suggested by a 90’s Radio Electronics, this circuit automatically activates the recording switch of an old tape recorder. It can be adapted for other purposes.
This 50% duty cycle configuration was found in a Popular Electronics from the 1990s. The operating...
We found this circuit in an early American 80's documentation. We note that the first gate of the...
This circuit was found in the Linear Technology Applications of 1997. The circuit uses common...