This circuit is from a Radio Electronics magazine from July 1979. It uses the well-known IC 7107, a liquid crystal exciter that became popular in circuits of this type at the time.
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...