We found this circuit in a 1967 Electronic design. However, it can be easily implemented even today as it uses only common diodes.
Texas Instruments UCC21225A is available from Mouser Electronics. It is an isolated gate driver...
This audio stage can be used in siren circuits, sound effects and others to excite a few watts...
This circuit with JFET and Unijunction was found in an ancient American documentation. The...