[Amps] Has this SMPS got too much ripple for a SS bias supply?

[Chris Wilson]

> Did you take that measurement loaded @ 3A or no load?

> Randy AB9GO

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> Randy E. Randall AB9GO
> Network Architect
> UC Health
> Randy.Randall at UCHealth.com
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> Fax 513-585-7159

> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Chris Wilson
> Sent: Wednesday, October 02, 2013 10:11 AM
> To: amps at contesting.com
> Subject: [Amps] Has this SMPS got too much ripple for a SS bias supply?



>   02/10/2013 15:09

> I have a Skanti commercial solid state 250W RF amp, 1 to 30 MHz. It
> needs 50 volts and 5 volts supplied to it. The 5 volts is for the
> bias circuits. I am told they draw about 3 amps maximum. I have a
> good quality regulated 4 amp SMPS at 5 volts. Here is a `scope
> screen shot of the ripple, measured without ground lead tails on the
> probe, direct across the output to minimize pick up. The dots are
> the cursors, it's an elderly Tek 7854 analogue `scope. Is this OK to
> use? Or do I build a linear regulated supply? Thanks.

> The `scope screen shot is at http://www.gatesgarth.com/ripple2.jpg 
> as I don't know how to upload a shot here.

> --
>        Best Regards,
>                    Chris Wilson.
> mailto: chris at chriswilson.tv

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02/10/2013 22:28

It was un loaded. Just the `scope connected.


-- 
       Best Regards,
                   Chris Wilson.