This linear oscillator was found in a 1968 publication. The operational amplifier is from that time. Both the FET and the integrated support current equivalents.
Only incandescent lamp can be used in this circuit. The SCR must be mounted on a heatsink and...
This circuit originally appeared in a publication of 1997. With the changes, the circuit can be...
This circuit is from a 1969 Electronics World. The transistors may be modern general-purpose...