This is a Japanese commercial radio from the 60s. The superheterodyne circuit of 7 transistors for medium waves has 200mW of output when powered by 4 common batteries.
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...