This circuit is from 1964 documentation but can be easily implemented based on current components. Input waveforms and detection are shown next to the diagram.
In this circuit the output current is limited by R3. For a 300 mA current, R3 must have 12 Ω. For...
Found in Radio Electronics from the 90s, this circuit produces pulses to test an infrared...
This circuit was obtained from an American publication of the 80's. The integrated circuit is of the...