This circuit was found in the June 1990 issue of Radio Electronics magazine. The maximum current is 1 A and the integrated circuits must be mounted on heat sinks.
This circuit uses two sensors that are placed at the intersection of a miniature railway, causing...
This circuit with RIAA equalization is from 1985 US documentation. The circuit has a flat response...
Today we have more compact solutions. This is from a Radio Electronics magazine from October 1990....