BUILD AN ELECTRONIC CHIME OR PERCUSSION RELAY FOR YOUR PIPE ORGAN
By John DeMajo

With the popularity of electronic organ relays, it often becomes necessary to devise a means of switching higher current devices, such as chime or electric percussion solenoids, throught a relay output designed to handle low current. Most organ relays are designed to operate chest magnets in the range of 100-150 ohms at 12VDC. A chime relay, however, can routinely draw 1 to 2 amps. This simple circuit, consisting of only four parts per single note unit, can be constructed for around $2.50 per contact. Built with standard components available at Radio Shack stores, the device works as well as the more expensive Peterson and Sindyne equivalents.