ECN Forum Forums Technical Discussion Electrical Theory and Applications SCR VSD causing relay to chatter

The following shows how I put the whole thing together. Please note that I used a 2.5 Kohm pot instead of the recommended 2 Kohm pot in the original variable voltage circuit (http://www.electronics-tutorials.ws/blog/variable-voltage-power-supply.html). Otherwise I followed it to the letter. I showed all the essential parts and labelled the conductors from the Molex connector that were pertinent to this diagram. There is one other yellow conductor that I used from a different connector to feed the relay coil.