Using 4 tubes, this 1924 receiver combines new technologies as an intermediate frequency stage that was already beginning to appear. Listening is via phone and battery power.
This circuit causes an LED to blink from the 1.5 V supply thanks to the use of a voltage doubler. The...
We found this circuit in an old English documentation. The JFET can be any general purpose and the...
In the figure we show how to connect a power MOSFET to the output of a CMOS function to control a power...