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Old 23-06-2024, 11:45 AM
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ChrisD (Chris)
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Join Date: Apr 2021
Location: Melbourne
Posts: 283
Quote:
Originally Posted by Drac0 View Post
OK, finished testing for tonight

It operates just fine at 5v, 7v, 8v, 9v & 12v delivering the correct power throughput.
PWM works fine at 12v - measured by both temperature of a dew strap & voltage throughput (from ~8.5v @ 0% to 12.5v @ 100%).
PWM doesn't seem to like working at 5v. At 0% it outputs ~3.5v but 25%, 50% & 75%, they all output 5.45v which is actually higher than 100% at 5.34v. Note that 1% operates at ~4.9v, but 10% also jumps to 5.45v. Guess I'll have to stick to the low/med/high switch on my USB powered dew straps.

What type of flat panel (cheap) would I need to test SkySwitch in that mode? Any suggestions Chris?

Cheers,
Mark
Hi Mark,
Firstly, you are doing a fantastic (I was tempted to say "stellar") job on this, thank you so much.

I'll do some more testing on the 5V PWM and get back to you on that one.
I think I know what is happening and I'll get back to you with the answer soon.

Can you tell me, are you using a multimeter/voltmeter to test the PWM output or something like an oscilloscope?

I've tested the flat panel drivers with both electroluminescent panels and LED based panels. I can send you a simple 12V LED panel that's about 120mm across if you have a scope around that aperture or less?

Chris
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