This circuit appeared in the May 1983 issue of Radio Electronics magazine. It is based on the dedicated integrated circuit CEM3340. The circuit provides signals with various waveforms.
Using the well-known SAA1027, this circuit serves as interface for PC. No English documentation was found...
Found in a 90’s American documentation, this circuit indicates the frequency of input pulses up to 1...
With the circuit shown, you can have a fast response with a Darlington configuration. The circuit is...