This Vienna bridge multi-band oscillator circuit was found in a 1974 Ferranti transistor manual. The circuit generates signals from 25 Hz to 1 MHz in 5 bands selected by the capacitors.
The circuit shown is from the National Semiconductor FET manual. Both operational and FETs admit...
This circuit was obtained in a documentation of the 80s, using operational of the time. The...
This circuit is from a factory manual from the 80s. The circuit can be implemented with more...