Did you take that measurement loaded @ 3A or no load?
Randy AB9GO
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Randy E. Randall AB9GO
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-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Chris Wilson
Sent: Wednesday, October 02, 2013 10:11 AM
To: amps@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@chriswilson.tv
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