Preparation/Installation of the Relay

Pull on the pliers while holding the short sides of the relay. It helps a little to push in on the short ends. Be sure to attach the pliers to one of the switching pins, on the side where only two pins are located. If one of these pins break off no harm will be done. Braking off one the coil pins, located on the side where there are three pins, will make it difficult to use the relay.

The picture shows the "high inductance spot" used to extend the range of the relay. This toroid has 17 turns (and #20 wire), so the middle turns are bunched up a little more than if 18 turns were used as noted in the instructions. Use 18 turns (and #22 or #24 wire) as noted in the instructions. (Click "Back" on browser to return)

Solder the ground wire for the relay in the hole noted "Gnd". If the other ground holes are used the ground wire would be too close to the toroid and may affect stability. Use the larger hole marked "Hole for Stabilizer Wire" to run the wire from the stabilizer to the relay. If you do not use a screw/nut/rubber grommet to mount the toroid, but use a plastic tie wrap instead, use the hole marked "Use for Tie Wrap" to hold down the toroid.

This picture shows how the relay is mounted above the "high inductance spot" on the toroid. The magnetism flows around the circumference of the toroid, not across the toroid. Note the "U shaped" armature holder that helps get the magnetism of the relay closer to the toroid.

The final mounting of the relay, showing the ground and stabilizer wire, held down with wax. The entire toroid should be covered with wax to obtain the best stability.

The coil pins are the larger ones near the sides of the relay. The center pin is the armature pin and may be broken off.

Solder the ground wire to the PCB first, then solder the other end to the relay. Use the ground wire to hold the relay while wax is applied to the relay and toroid.

After the wax has cooled, poke a hole in the larger hole for the stabilizer wire, if it was covered up with wax, and solder to the other coil terminal of the relay.