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.
This circuit with a voltage comparator is delayed by the capacitor. The circuit drives a power...
This circuit was suggested by a 1967 Electronic Design. Modern equivalent transistors can be used....
Many oscilloscopes have high impedance inputs that make it difficult to observe high frequency signals...