Meanwell rd-35b simple question

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tblough
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Re: Meanwell rd-35b simple question

Post by tblough »

Sorry, I didn't see your post above the pic post. Based on that, your power supply is good. Someone else must have asked for the resistance. As I've stated previously, resistance is meaningless on a semiconductor circuit.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.


RemyM
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Re: Meanwell rd-35b simple question

Post by RemyM »

tblough wrote: Sun Jul 14, 2024 11:41 am Sorry, I didn't see your post above the pic post. Based on that, your power supply is good. Someone else must have asked for the resistance. As I've stated previously, resistance is meaningless on a semiconductor circuit.
These are your word....

"With the power off and V1 disconnected, COM and V1 will show a high resistance (>1K ohm).

If you have low resistance (<1 ohm) between your disconnected V1 wire and COM you have a short in your wiring. If you have low resistance between COM and the V1 terminal when no wire is connected then you have a bad power supply."

I showed you I have low resistance between com and v1 with no wires connected... as you stated ..I have a bad power supply


tblough
Community Expert
Posts: 3543
Joined: Tue Mar 22, 2016 10:03 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: Yes
CNC Control System Serial Number: 100505
100327
102696
103432
7804732B977B-0624192192
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Boston, MA
Contact:

Re: Meanwell rd-35b simple question

Post by tblough »

I stated low resistance = <1ohm. You had 20+. You have a wiring problem, not a bad supply. You are welcome to swap your supply, but i think you'll have the same issues unless you fix your wiring.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.


RemyM
Posts: 19
Joined: Mon Jul 08, 2024 9:42 am
Acorn CNC Controller: Yes
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Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Meanwell rd-35b simple question

Post by RemyM »

tblough wrote: Sun Jul 14, 2024 1:26 pm I stated low resistance = <1ohm. You had 20+. You have a wiring problem, not a bad supply. You are welcome to swap your supply, but i think you'll have the same issues unless you fix your wiring.
I have a new psu arriving this coming week.
I will compare the two. If it is my wiring then I guess I'll have to post pictures of my wiring to see if anyone can spot the problem..
Thank you for your help.. I appreciate you!!


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