I understand the single board wiring. But as far as 2 pairs, I'm thinking the same thing, but I just wanted some confirmation...
Thanks. About the fixtures, I've done them myself. It's not very hard to do, I used 2 pieces of Delrin joined together with machine screws and drilled the holes for the caps with a hole saw. They clamp the caps well without excessive pressure.
Could not wait for the missing resistors on the soft start boards to test the CLC power supplies, so I bypassed softstart and wired the transformer to my variac fused with 1A fast blow fuse. Both are working fine!
Pretty good, does not have any noise with the CLC in that position?
He liked to make some coils CLC, and asked a help.
Can you tell me the thickness of the wire, the interior, exterior and width measurements.
I have a shop nearby that sells coil wire and tried to make some. thank you
@ Blink_PT About noise, I don't know yet because the front end and output boards are not wired at this step. I hope it will be ok because I located the coils farthest away possible from the front end board which will be located on the back panel. Keep reading, I should have them finished in 2 or 3 days and I will post the results.
For the specs of the coils, you will find them here : ERSE-XQ I used these coils because I had them here unused. I you want to make them, I would go with 12 gauge to keep the resistance lower and maybe go over 2 mH.
For the specs of the coils, you will find them here : ERSE-XQ I used these coils because I had them here unused. I you want to make them, I would go with 12 gauge to keep the resistance lower and maybe go over 2 mH.
I will mesure the temp when I will get the parts to finish the build. I only checked the voltage rails with no load, so I don't know yet. The coils are rated for 750W, they will be fine.
You could also just use a Hammond choke: 159ZL, specs:
2.5mH
10A
0.044 DCR @ 10A
With a 10A rating, heat shouldn't be a problem. Inductance will droop a bit at higher currents but Hammonds are pretty conservative rating.
I used the ones you see because I had them collecting dust in my house and I didn't mind dropping a bit of rail voltage. But I admit that 0.044 DCR is pretty impressive and propably a better choice for the task.
The $30 price tag is excellent considering the performance to size and cost factors. Simulation shows about 40mV of noise. This in lieu of 500mV of ripple using 100mOhms DC resistance. Same capacitance. Any added inductance will of course cause the diodes to get a bit more flustered, so take care with inrush.
The $30 price tag is excellent considering the performance to size and cost factors. Simulation shows about 40mV of noise. This in lieu of 500mV of ripple using 100mOhms DC resistance. Same capacitance. Any added inductance will of course cause the diodes to get a bit more flustered, so take care with inrush.
You are flustering me!
Seriously, do you advise me to not use these coils?
You are flustering me!
oops, I meant "flushtered"
oops, I meant "flushtered"
Hahaha!
Thanks a lot for your inputs Roger, maybe I did not a good choice trying to put these coils in duty. I will think about it this weekend and see if I stay with them or go with a bunch of resistors.
Hahaha!
Well, I really don't know anything about the coils you are using - they might be every bit as good as the Hammond choke. I had mentioned it just as a suggestion for anyone who might be considering a similar CLC type filter arrangement.
You mentioned they were about 2mH - this is at 60Hz? What's the DC resistance?