The operational amplifier used in this application is uncommon today. This Raytheon circuit can be designed with equivalent operational and the power supply must be symmetrical.
This conventional oscillator can generate signals from 8 to 30 MHz depending on the crystal used....
This reverb effect was found in the December 1961 Radio Electronics magazine. It makes use of...
This circuit is from a March 1967 Radio Electronics. The circuit applies to general purpose SCRs...