Regarding that first regulator, the QSKJ QS-1212CCBA-80W, I have one of those. The IN- and VO-
connections are apparently not wired together internally. You can't look inside because the whole
thing is potted in some solid substance. In the interest of having all my equipment on a common
ground, I wired the IN- and VO- together. Now the red "error" light is lit all the time (even when
those connections are not wired together). And the device shuts down regularly (output voltage drops
to zero until power-cycled). I don't know whether the failure was caused by wiring the connections
together, or whether it's just coincidence.
The thing doesn't make much hash at KX3 receive current levels, but hash increases if you draw more
current from it.
--Mark K7NEW
On 5/15/2013 11:41 AM, Jon Moody wrote:
Hi Glenn,
I have purchased both of these DC-DC power converters and have been very
happy with them. They both have an adjustable output set voltage and seem
to have very good regulation. The only issue is with RFI that they
generate. The good news is that they are pretty well shielded in aluminum
cases. But their is stil some leakage from the power connections but I
have found that attaching good quality ferrite beads on the power
connectors to pretty much eliminate this as well.
http://www.ebay.com/itm/Low-Ripple-CC-CV-Car-Power-Supply-Module-LED-Driver-DC-DC-8-30V-to-2-16V-80W-/251112762798?pt=LH_DefaultDomain_0&hash=item3a777cadae
http://www.ebay.com/itm/DC-DC-150W-Non-Isolated-Booster-Voltage-Converter-6V-32V-Step-Down-to-0-8V-28V-/260968513486?pt=LH_DefaultDomain_0&hash=item3cc2ef7fce
YMMV and I am sure that their are many other equally fine Regulators out
there....
--
Mark Newbold K7NEW
Sequim, Washington, USA
http://dogfeathers.com
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