Found in American 90’s documentation, this circuit generates 300 Hz depending on the capacitors used. These components can be changed to obtain other frequencies.
Any high-gain Darlington transistor can be used on this touch circuit. The load can be formed by...
This circuit is from a 2005 Linear Technology LT6100 Application Note. The circuit provides a...
The operational used is like the 741 and the voltage gain is unitary. The circuit is from the...