Found in the July 1980 Radio Electronics magazine, this circuit uses an integrated circuit from the time and a power Darlington. The Darlington must be equipped with a heat sink.
This circuit, which in our times would be called a shield, can also be used with other loads. The...
This circuit was found in a 90s Popular Electronics. It uses an LS3404 melody chip that has...
This circuit is ideal for recovering vinyl media with a linear response from the RIAA curve of the...