This circuit was found in Sgnetics documentation from the 80's. The circuit also has loudness control. The power supply must be symmetrical.
This circuit was obtained in a 1976 English magazine, and can be assembled with equivalent...
This amplifier is from a 1990s Linear Technology component manual. The circuit requires...
This circuit can shift the phase of a signal from 0 to 360º. FETs admit equivalents and the...