[ARC5] osc. reg.

[Kenneth G. Gordon]

On 1 Jan 2013 at 16:46, Darryl Sage wrote:

> Hi  I am looking for a diagram of a solid state regulator for my 80
> meter arc 5

If you don't mind using VR tubes, connect a VR-105 and a VR-90 in series 
with an appropriately-sized dropping resistor from your +HV supply. That will 
give you 195 VDC of very-well regulated oscillator voltage. 

Or two VR-105s will give you 205 VDC. Both at up to 30 mA. The 5-volt 
difference isn't going to effect anything. 

I would size the resistor to draw 15 mA through the VR tubes with no load on 
the output. The 1626 draws only a few mA.

Or you can use Zeners in the same configuration.

> what I am doing now is using a variac to get the b plus on
> the osc. 200  volts key down

Variacs, unless you use a REALLY BIG ONE, are very poor at regulation.

> I have a 28 volt  ps. which is not on the
> variac  Does this setup work to keep chirp down ?

It could.

Fellas?

Ken W7EKB