Found in old documentation, this circuit can use modern equivalent components. The signal has good strength thanks to the use of a power transistor. The Q1 transistor is a unijunction of the time.
The open output voltage on this circuit is approximately three times the peak value of the input...
We found these circuits in a 90s Radio Electronics. In them, we have the way to turn a load on and...
The purpose of this circuit is to turn off the power supplied by a battery when its voltage drops...