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Old 23rd January 2011, 03:15 PM   #41
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Hi!

I have a few part selection questions for this project too

R58, R3, R26, and R60 seem to be hard to find in the values stated in MRS25, even if I order them through Farnell. Is there some flex in these values at all, or are the stated values the best choices?

For C6,C7...C18, would 330pF/160V FSC work? I cannot find from Farnell the 390pF parts. They do have 390pF in FSCEX, but I'm not sure they'd fit.

For the "solid electrolytic" I cannot seem to find these at all, despite you giving the BC part number. That includes Farnell, RS Components, and the usual US places (C34, C35, C5, C24, C33). What about tantalum capacitors here?

Thanks!
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Old 28th January 2011, 03:54 PM   #42
Frex is offline Frex  France
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Hello,

R3=806 Ohms standard 1% E96
R58=330 Ohms value not critical (power led)
R26=24 kOhms value not critical (23.7 or 24.3k 1% E96 are ok)
R60=64.9 kOhms standard 1% E96

You can use any metal film axial resistor, MRS25 type is what i use but others types are of course perfectly suitable.

For R3 and R60, they value set the oscillating frequency. You can change slightly they values, but the frequency will change too.


For C6,C7, and C18, if you don't find 390pF, you can use 330pF and add 68pF or 47pF in parallel in order to get right value.
With only 330pF, the filtering shape will be different and the oscillator can badly work.

For all solid electrolytic caps, i know that they can be hard to find, you can use standard electrolytic caps without any problem. Costly tantalum can work too, but i don't recommend ti use them...(can explode!).
Regards.

Frex
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Old 29th January 2011, 12:55 PM   #43
qusp is offline qusp  Australia
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are there any more PCBs?
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Old 30th January 2011, 09:07 AM   #44
Frex is offline Frex  France
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Yes, some are yet available.
Price is 30 for each, including worldwide shipping (priority letter).
If you're interested, send me a PM with your personal e-mail address, i will send you a Paypal invoice.
Regards.


Frex.
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Old 27th February 2011, 01:33 AM   #45
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Frex:

what do you recommend to do with W1 and W2? I assume the idea is a filter, assuming you have enough voltage overhead.. Should I just short them, or populate the 4.7 ohm resistors, or wait until I know what my input voltage is and what it looks like after the regulator? I actually thought they were alternative parts for the 4.7 ohm resistors (to use SMD parts here)... oops, but I see I was wrong. Anyways, just wanted to see what you intended.
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Old 27th February 2011, 09:13 AM   #46
Frex is offline Frex  France
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Hello,

You can leave W1 and W2 open, if you mount R50 & R54.
If your power source is already very clean, you can short R50/R54 in closing W1/W2.
Regards.

FRex
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Old 8th June 2011, 01:18 PM   #47
hesener is offline hesener  Germany
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just finished my build, with 100nF caps instead of 10000pF and the frequency is 1kHz. thanks a lot for the great PCB artwork, it was easy to assemble and works beautifully from turn-on!
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Old 6th October 2011, 06:21 PM   #48
klewis is offline klewis  United States
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Quote:
Originally Posted by Frex View Post
Yes, some are yet available.
Price is 30 for each, including worldwide shipping (priority letter).
If you're interested, send me a PM with your personal e-mail address, i will send you a Paypal invoice.
Regards.


Frex.
Frex,

I know that I'm very late to the party... any boards left?

Ken
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Old 7th October 2011, 12:20 PM   #49
Frex is offline Frex  France
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Hello,

I have sold the last EOSC10kV2 board some weeks ago.
DIYers occasionally ask me circuit board for sale from the previous batch.
So, i have just ordered a new batch of this PCB from the manufacturer, and i will receive them in about 20 days.

I can take your order now and i sending PCB as soon i will receive them.
As my previous PCB sales, i send you a Paypal invoice and you do the payment.
A full design folder including all design files will be send immediatly after payment received (by e-mail).

Price is 30€ for one bare PCB, including worldwide shipping in priority letter (no insurance). It take about 5 days to arrive in EU, 15 days outside EU.
Regards.

Frex
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Old 7th October 2011, 04:23 PM   #50
klewis is offline klewis  United States
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Frex,

Great new. Yes, send me the invoice.

Ken
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