This sensitive circuit was found in an Electronics Hobbyists Handbook from the 1990s. The circuit can use common general-purpose transistors in place of the original ones.
We found this circuit in a 1998 publication. The circuit has controls for both frequency and...
This circuit for conventional lines was obtained in a 1996 documentation. The circuit uses common...
This is the conventional version of capacitance multiplier with operational amplifier that appears in...