We found this circuit in a 1998 publication. The circuit has controls for both frequency and signal strength. A lamp is used to monitor the signals. The supply is made with a voltage of 12 V.
This simple transistor tester was found in a Japanese magazine in 1967. It tests general purpose...
Short duration pulses or "clicks" can be generated with the circuit seen in the figure. The...
A 25 mVpp applied to the input of this circuit produces in the output a 1 Vpp signal. The...