This signal injector and tracer (follower) was found in an old American documentation. The transistors can be general use and power is made with one or two common cells.
Found in a 90’s HAM Radio, this circuit is used for an optical communications system or even audio...
Found in a Hands-On Electornics, this touch biestable can control loads that depend on the SCR....
January 2017 - Mouser Electronics is supplying Ametherm's new glass encapsulation thermistors for...