This very simple amplifier was found in the Philips Databook of 1990. The circuit is suitable for headphones and other battery powered applications.
This 2003 circuit is powered by the telephone line itself. Its purpose is to notify you when there...
The transistors on this 1975 circuit can be BC548 and BC558. The circuit uses a symmetrical source...
August 2017 - Rectron's Schottky Barrier Diodes can now be obtained from Mouser Electronics. The...