This circuit used in tape recorders was found in an Electronic Design. The components support general-purpose equivalents. The circuit serves to recover media.
We found this circuit in an American publication from 1977. The circuit drives two LEDs according to...
The bipolar transistors may be BD136 and BD136 and FET of any type for 1 A current at least. The...
The interruption of the light incident on the phototransistor causes the trip of this circuit that can...