19-04-2011, 02:26 PM
Ok quick update on this, The pcb is now complete and functioning.
The plan is to put it in a cabinet with a volt meter for the LT side so it can be varied for different types of heater voltage.
Also got a couple of connectors for different sets so they can be mounted on top of the case.
That will mean a 3 or 4 position switch, shunted by resistors to give the required voltage.
The HT side is 130v but under the load of a 3k3 resistor drops to 70v or so, the LT also varies with a pot.
So things are progressing.
cheers Mark
The plan is to put it in a cabinet with a volt meter for the LT side so it can be varied for different types of heater voltage.
Also got a couple of connectors for different sets so they can be mounted on top of the case.
That will mean a 3 or 4 position switch, shunted by resistors to give the required voltage.
The HT side is 130v but under the load of a 3k3 resistor drops to 70v or so, the LT also varies with a pot.
So things are progressing.
cheers Mark
Keep on Fiddling!
