This circuit that converts voltages from a battery into high voltages for tube circuits was found in Radio Electronics magazine from February 1960. The transformer is of a special type.
In this circuit we show how to configure the LM3914 as a bargraph or moving point, supplying 10...
We found this circuit in a documentation for 1977 American radio amateurs. The LM336 integrated circuit...
This modulator circuit is nothing more than an audio amplifier that serves to modulate amplitude...