This commercial radio with 3 earphone listening transistors was manufactured in Japan in the 1960s. The medium-wave circuit uses germanium transistors and is powered by a 9 V battery.
In the figure we show yet another CMOS component based voltage controlled oscillator circuit. The...
This power supply can provide 10 A currents. Its regulation is made by 7812 integrated circuit. The...
The circuit shown bellow is gated by an external signal. A high logic level applied to the input...