Found in older Signetics documentation, this circuit generates signals from 30 Hz to 25 kHz. Operational amplifiers are from the time, as is the matching pair of transistors.
The frequency of this oscillator depends on the crystal used and the transistors. The circuit was...
This circuit shows how to use the 4007 MOSFETs in an amplifier stage. We found it in an...
This circuit was found in a 1967 Japanese documentation. It consists of a touch control system with...