This is an amplifier circuit intended for modulating transmitters. The 5-tube circuit is from an American manual from 1947. The power supply uses a transformer.
Found in an American documentation from the 90s, this sophisticated circuit is suitable for...
In the figure we have the way to make the connection of voltage regulators in series to obtain a...
Using the ULN-3784B this circuit typically supplies 5 W at 24 W. However, it can operate from 9 V....