This oscillator was found in a 1976 documentation. The no specified components indicate circuit timings in the range of 150 ns to 120 seconds. The supply must be made with 5 V.
This circuit, from the manual of the integrated circuit used, is a bass and treble control for...
This circuit was found in General Electric documentation from 1965. The transistors are from that...
This circuit was obtained in an American documentation from the 80's. The transistors can be...