Device runs despite being connected to PWM with a to 220v to 12v adaptor.

Question

Device runs despite being connected to PWM with a to 220v to 12v adaptor.

freeland90 (Chemical)

(OP)

8 Feb 22 15:02

Hello
I've got a 12v 80w fan connected to a 2,000W 12v PWM that is connected to a 220vTo12v 300W adaptor. The fan starts as soon as I plug in the adaptor, it runs faster when I max out the PWM, but doesn't turn off when I slow PWM to 0. would Anyone explain this to me please?

3DDave (Aerospace) · Answer 1 · 2022-02-08 20:29:02

Right in the ad - PWM duty cycle: 5%-100% It doesn't ever go to zero.

LittleInch (Petroleum) · Answer 2 · 2022-02-08 20:41:22

I wondered about that but then it also said power 0.01 to 1200W or something like that.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

itsmoked (Electrical) · Answer 3 · 2022-02-08 23:38:33

You should include a power switch to stop it AND the PWM.

Keith Cress
kcress - http://www.flaminsystems.com

TugboatEng (Marine/Ocean) · Answer 4 · 2022-02-09 03:04:46

A limit switch on the control ensures shut off at zero position.

freeland90 (Chemical) · Answer 5 · 2022-03-23 12:31:30

Hello guys.
Update: I'm now using a 300watt ACToDC converter, got that hooked to this DC 2000W PWM to my 80W DC fan. I included a power switch but the fan starts even if it's off. Back when I had it hooked to a 12v car battery, the exact opposite happened. The fan won't start till I move the PMW halfway through. Should I go for a smaller PWM? The same power as the ACtoDC converter? 300W?

Come Join Us!

Posting Guidelines

Device runs despite being connected to PWM with a to 220v to 12v adaptor.