[Boatanchors] Amp Supply LK500-ZC Amplifier Question

[Mark K3MSB]

I was wondering about that.   20 VAC is an RMS value,  so  20 * 1.414 = 28
peak.

If the filter cap is good, it may (should be?) be charging to 28V (or close
to it) giving around 26 Volts for the relay.

My error in my original analysis was forgetting about the filter
capacitor.

Mark K3MSB




On Sun, Aug 2, 2015 at 8:48 PM, Rob Atkinson <ranchorobbo at gmail.com> wrote:

> On Sun, Aug 2, 2015 at 6:13 PM, Mark K3MSB <mark.k3msb at gmail.com> wrote:
>
> >
> > The coil is fed from 20 VAC through a half-wave rectifier, so the
> measured
> > reading of 12 VDC at the input end  of the coil is in the ball park.
> >
>
> That doesn't seem to be in the ballpark to me at all.  Maybe if it were
> 20VCT.
>
> I'd expect 20 V. AC through a diode to give me pulses of DC peaking at
> around 28 v.
>
> I must be missing something.
>
> 73
>
> Rob
> K5UJ
>