The circuit transistors, found in a 1974 documentation, may be the BC548. The circuit is used in quadriphonic systems to combine signals.
The indicator for this circuit is a mini buzzer with a 1.5 V oscillator. The circuit can also be...
The diagram shows an AND gate implemented with an LM3900 transconductance operational. The circuit is...
This circuit allows modulating a laser diode with low frequency signals. The integrated circuit...