This 80's circuit uses an audio amplifier to obtain a symmetrical source from a single source. The maximum current is on the order of 1.3 A and the input voltage must not exceed 20 V.
We found this circuit in an old documentation for hams. In it we have the way to use a varicap to...
Found in an 80's documentation this circuit uses an integrated from the uncommon era today. Other...
This circuit is stabilized by a thermistor or NTC with a resistance between 2 and 5k. The signal is...