This circuit was obtained in a 1978 publication. The supply can be symmetrical from other voltages. Frequency can be changed by changing the capacitors.
This circuit is from a Radio Electronics from October 1963. The transistor is a power transistor of the...
We found this circuit in an English publication from the 80's. The circuit is perfectly current,...
This circuit is from the 1977 RCA CMOS Integrated Circuit from the RCA of 1977. The power supply of...