We found this circuit with SCRs and unijunction in a Radio Electronics magazine from June 1969. The SCRs must be in accordance with the controlled incandescent lamp. The circuit is powered by DC.
This circuit is from an Electronics Now from 1998 and can be easily assembled with other JFET...
The circuit is a multivibrator version using two NPN general purpose transistor. This circuit can...
This circuit, published in the 1980s, can be applied to operational amplifiers of almost any type....