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Old 27th March 2013, 11:02 AM   #2951
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Just inversed B+ in/out Andy posted?

I have FT-3 15nF or 100nF, wich one? or I can parallel two 15nF to have 30nF or parallel 3 15nF to have 45nF?
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Old 27th March 2013, 11:07 AM   #2952
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Hi Stajo - as you show, 3 and 7 are internally joined. So on the socket you join 3 (or 7) to 5 (anode). Then use 7 (or 3) for the other connection. Does it actually matter if 7 or 3+5 is the input or the output?
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Old 27th March 2013, 11:11 AM   #2953
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Quote:
Originally Posted by andyjevans View Post
Hi Stajo - as you show, 3 and 7 are internally joined. So on the socket you join 3 (or 7) to 5 (anode). Then use 7 (or 3) for the other connection. Does it actually matter if 7 or 3+5 is the input or the output?
No
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Old 27th March 2013, 11:18 AM   #2954
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Originally Posted by merlin el mago View Post
Just inversed B+ in/out Andy posted?

I have FT-3 15nF or 100nF, wich one? or I can parallel two 15nF to have 30nF or parallel 3 15nF to have 45nF?
What's the max, input voltage for VR150?
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Old 27th March 2013, 11:23 AM   #2955
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Originally Posted by merlin el mago View Post
What's the max, input voltage for VR150?
I'm sure there is one but you will be fine. Its more the current 5-40 mA you should watch out for. You need some 30-40 V more Vin then Vout to make it lit.
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Old 27th March 2013, 11:36 AM   #2956
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I'm sure there is one but you will be fine. Its more the current 5-40 mA you should watch out for. You need some 30-40 V more Vin then Vout to make it lit.
Canc check the current with a DVM in series with the DN2540? Attached pic with PSU used I believe is OK?
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File Type: png PSU.png (180.9 KB, 179 views)
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Old 27th March 2013, 11:39 AM   #2957
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Perfect. Check it over the 100R resistor if you still got it

Last edited by stajo; 27th March 2013 at 11:43 AM.
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Old 27th March 2013, 11:42 AM   #2958
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Yes I still have it.
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Old 27th March 2013, 02:15 PM   #2959
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You can mount the DN2540 directly to the underside of the chassis top plate.
Felipe, if you do like this, please be very careful with insulation. Use a thick aluoxide and rather clamps then thru hole screw. HV should have at least a mm or 2 to touchabe things, even if its grounded to earthground.
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Old 27th March 2013, 02:23 PM   #2960
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Hello stajo -

Thanks for picking up on this. I can see the sense in using a separate heatsink. Good advice.

Andy
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