This circuit used in tape recorders was found in an Electronic Design. The components support general-purpose equivalents. The circuit serves to recover media.
This circuit was found in Philips documentation from 1967. The phototransistor is from that time,...
This circuit can provide constant currents adjustable between 1 and 10 mA. The transistors can be...
We found this circuit in the semiconductor ON manual using couplers of the time. These components...