This 1968 Mallory circuit uses an uncommon integrated circuit today. The circuit has a 30 to 20,000 Hz response with lower power and is powered by 12 V.
This circuit was found in the July 1969 issue of Radio Electronics magazine. It also appeared in...
This circuit can function as a high-power shield completely isolated from the power grid. We found...
This circuit has as a critical component the transformer that has low voltage windings for the...