This circuit with unijunction transistors was found in a documentation from the 80's. The trigger times of the SCRs depend on the capacitors and are adjusted in the 5M (4M7) potentiometers.
This simple circuit with good gain using just one transistor was published in Radio Electronics magazine...
March 2017 - This new component of Vishay has a 16-bit resolution that allows it to be used in a...
Found in documentation from the 1970s, this circuit for resistive loads uses a trigger...