This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose transistors. The circuit has no offset. The power supply must be symmetrical.
This circuit is from a 1976 publication, but it can be easily implemented with a BC548 transistor. The...
This power supply appeared in an article in the September 1977 issue of Radio Electronics...
In this circuit, a unijunction transistor controls a multivibrator providing a rectangular signal...