Capacitor Postage
I have not included for postage...........I will post the costs on this site.....after I have sent goods......that way you only pay the exact ammount charged!!
(Caps will be posted once main payment has been cleared)
Hope this is ok........
Postage should'nt be that bad.......under £5
Richard
I have not included for postage...........I will post the costs on this site.....after I have sent goods......that way you only pay the exact ammount charged!!
(Caps will be posted once main payment has been cleared)
Hope this is ok........
Postage should'nt be that bad.......under £5
Richard
Caps payment
Richard
Have sent money direct to your account should be there in three working days.
Do we have any specs for the caps?
thanks Simon
Richard
Have sent money direct to your account should be there in three working days.
Do we have any specs for the caps?
thanks Simon
PSU Group Buy
Whilst on the PSU front what are the UK crew doing for the rest of it?
On P42 of the original thread we found out that the XA200 uses CL60 NTC thermistors as the "R" in its CRCRC which also limit the inrush current. Another of NP's elegantly simple ideas!
These are available from Mouser at $2.17 plus shipping.
Farnell have an equivalent the SG27 at £1.37 which is a reasonable equivalent price to Mouser, however neither are known as the the cheapest. Has anyone seen these or another equivalent any cheaper.
I am in for 32, eight lots of four as per XA200 (8A bias).
I am also considering choke regulation and the other ideas suggest in thread 26223, Mikelm is strong proponent of this.
The inductors could be sourced at a reasonable cost http://www.diyaudio.com/forums/showthread.php?s=&threadid=29573
I was thinking 2.5mH plus made of 10AWG for low resistance.
Anyone interested in a group buy in the above?
Simon
Whilst on the PSU front what are the UK crew doing for the rest of it?
On P42 of the original thread we found out that the XA200 uses CL60 NTC thermistors as the "R" in its CRCRC which also limit the inrush current. Another of NP's elegantly simple ideas!
These are available from Mouser at $2.17 plus shipping.
Farnell have an equivalent the SG27 at £1.37 which is a reasonable equivalent price to Mouser, however neither are known as the the cheapest. Has anyone seen these or another equivalent any cheaper.
I am in for 32, eight lots of four as per XA200 (8A bias).
I am also considering choke regulation and the other ideas suggest in thread 26223, Mikelm is strong proponent of this.
The inductors could be sourced at a reasonable cost http://www.diyaudio.com/forums/showthread.php?s=&threadid=29573
I was thinking 2.5mH plus made of 10AWG for low resistance.
Anyone interested in a group buy in the above?
Simon
Aleph-x power supply
I recall that NP had problems with the thermistors that were paralleled as R elements in the CRCRC filtering - they wouldn't always share the current consistently between them.
Not sure what was done to resolve the issue but resistors will not exhibit the same problem.
I chose to use air core inductors and had some 2.2mh ones wound for me out of 1.5mm wire - they worked out at about £12 each - they are quite bulky but will do the job without any foreseeable problems.
I recall that NP had problems with the thermistors that were paralleled as R elements in the CRCRC filtering - they wouldn't always share the current consistently between them.
Not sure what was done to resolve the issue but resistors will not exhibit the same problem.
I chose to use air core inductors and had some 2.2mh ones wound for me out of 1.5mm wire - they worked out at about £12 each - they are quite bulky but will do the job without any foreseeable problems.
Thermistors
I think the problem......was that they might not share current equally..........I think the solution was to mount them tightly back to back............so they heat up in a uniform manner........and the resistances track each other................
perhaps Mr Pass may enlighten us.................
D3
I think the problem......was that they might not share current equally..........I think the solution was to mount them tightly back to back............so they heat up in a uniform manner........and the resistances track each other................
perhaps Mr Pass may enlighten us.................
D3
Current hogging
D3 has it, they are mounted close together to get temp tracking and no current hogging occurs.
Jason, in the thread I mentioned Mikelm and the others who contributed still have resistors/thermistors in series with the Inductors. What was the largest gauge wire available from your source? As for the bias current of max 9 amps I am designing for really needs 10 gauge 2.5 mm wire not 14 gauge like yours.
Any ideas on a cheaper source as I might even need 40.
Simon
D3 has it, they are mounted close together to get temp tracking and no current hogging occurs.
Jason, in the thread I mentioned Mikelm and the others who contributed still have resistors/thermistors in series with the Inductors. What was the largest gauge wire available from your source? As for the bias current of max 9 amps I am designing for really needs 10 gauge 2.5 mm wire not 14 gauge like yours.
Any ideas on a cheaper source as I might even need 40.
Simon
Inductor possibilities
Any size inductor with any diameter core can be wound, but be warned that the costs rise due mostly to the weight of copper used.
I think the copper weighed in at about £4 for each inductor plus £8 labour for winding them.
I would guess the labour charge will not vary much due to a change of wire thickness, however bulk buying the copper wire can make a worthwhile difference on the costs.
That should give you a yardstick to work out how much you think the costs might be - suggest you call the guy - i left his number on the thread about the inductors that you already linked to.
I was impressed with the construction quality- better than others i'd seen where the coils were simply held in place with cable ties.
Any size inductor with any diameter core can be wound, but be warned that the costs rise due mostly to the weight of copper used.
I think the copper weighed in at about £4 for each inductor plus £8 labour for winding them.
I would guess the labour charge will not vary much due to a change of wire thickness, however bulk buying the copper wire can make a worthwhile difference on the costs.
That should give you a yardstick to work out how much you think the costs might be - suggest you call the guy - i left his number on the thread about the inductors that you already linked to.
I was impressed with the construction quality- better than others i'd seen where the coils were simply held in place with cable ties.
JONCLANCY PAYMENT FOR CAPS
Jon........I tried sending you an email & it appeared to fail......
did you get my accnt info???
Richard
Jon........I tried sending you an email & it appeared to fail......
did you get my accnt info???
Richard
No Contact as yet.......
Hi D3,
Please will you retransmit to "capt"?
Nothing seen as yet!!!
Many thanks
Jon 😎
Hi D3,
Please will you retransmit to "capt"?
Nothing seen as yet!!!
Many thanks
Jon 😎
CAPACITOR SENDING
I was intending to post out later this week..........however...
it has dawned on me that it is Easter Weekend..........I could post
say next Tuesday...........to avoid Easter weekend.........
Needless to say all parcels will be insured.........
If it were my delivery I think I would avoid the Easter Weekend.
I don't want lots of trips to post office......I intend to do two batches............
so please post if you want caps in post before Easter Weekend.
Regards
Richard
I was intending to post out later this week..........however...
it has dawned on me that it is Easter Weekend..........I could post
say next Tuesday...........to avoid Easter weekend.........
Needless to say all parcels will be insured.........
If it were my delivery I think I would avoid the Easter Weekend.
I don't want lots of trips to post office......I intend to do two batches............
so please post if you want caps in post before Easter Weekend.
Regards
Richard
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