Suggested by Mullard in a1969 documentation, this circuit generates the erasure signal for tape recorders of the time. Transistors can be modern equivalents like BD136 and BD136.
The gated oscillator shown here turns on when a “1" Iogic Ievel is applied to the input. The...
This circuit was obtained from an English magazine from 1985. It consists of a pulser that drives...
This is a single transistor stage for a phototransistor. The circuit is suggested by Texas...