We found this circuit in the 1977 RCA Solid State ICs. The circuit consists of a current amplifier with a gain of 1000. The supply must be made from a symmetrical source.
The resistors R determine the frequencies of the oscillator together with C. The circuit is from a...
This configuration can be implemented with equivalent operations. The circuit is from the 1990...
This proximity sensor was found in a 90s Popular Electronics. The base is a PLL567 that operates...