This circuit has more power than the previous one, since it includes a powerful transistorized stage. The circuit is from Radio Electronics from July 1985. It includes the power supply.
A girator reverses the impedance of a signal. Thus, a low impedance signal at the input appears as high...
This circuit is from an old English publication from 1968. We can implement it with TIP32...
This circuit was obtained from a Popular Electronics of the 80's. It is set to a certain pulse...