In the figure we have a circuit used in stair generators with the purpose of providing constant increases in pulse intensity. The circuit is from American documentation from 1968.
The TDA2613 is the mono version of the TDA1521A and has pinouts compatible with an integrated...
This circuit from an old 1978 publication uses germanium transistors but can be implemented with...
This project shows how to use an SCR in a starter circuit for a common fluorescent lamp. The SCR...