The presented circuit was found in the National Semiconductor FET Databook. The setting applies to other operational amplifiers and other FETs. The power supply must be symmetrical.
The circuit shown here is a CCO. The frequency here depends on the current through the...
This circuit can be used with the CIR12642E TTL Roulette, or other game circuits that must draw...
Found in Linear Technology documentation from the 90s, this circuit uses components from that...