Found in a 1990s Popular Electronics, this circuit uses a small transformer matched to the impedance of the speaker being driven.
March 2017 - The new 2W DC-DC converters from Recom can now be porchased at Mouser Electronics. The new...
This integrator circuit uses the junction FETs which can also be the BF245 or MPF102. The...
The figure shows a NOR or Non-OU logic function shield using general purpose diodes and a common...