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Old 27th July 2011, 12:44 PM   #371
AndrewT is online now AndrewT  Scotland
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look at post320.
SMD are available from some suppliers in single quantities.
They are generally very much cheaper if you buy in 10s, 100s or better still in 1000s.
Group Buying if there are lot's of different value components could potentially save a lot of money. Postage costs to local destinations will be cheap since SMD are inherently small and light.

I bought a small stock when retailers were clearing out their non ROHS. Some others I bought 100 off (at full retail) even though the project only required 4 or 8 pieces of each value.
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Last edited by AndrewT; 27th July 2011 at 12:50 PM.
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Old 27th July 2011, 04:00 PM   #372
EUVL is offline EUVL  Europe
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> What are 'SMD' components

See post #59.


Patrick
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Old 27th July 2011, 04:07 PM   #373
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Quote:
Originally Posted by johnwmclean View Post
Congrats CanAm Man,

64 years young!
Thanks, John..... and I spent two of those years in Woomera, Andamooka, and "the Alice". I actually learned to love the outback...!
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Old 28th July 2011, 04:33 PM   #374
EUVL is offline EUVL  Europe
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I got asked again about MOSFETs and JFETs.

Please see :

F5X -- the EUVL Approach

For MOSFETs you want all 4 Toshiba devices (2SK1530 / 2SJ201) in one channel to have the same Vgs (and of possible Yfs) at 2A.


Patrick
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Old 29th July 2011, 11:55 PM   #375
ashaw is offline ashaw  Australia
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The testing team is doing a limited group buy for the components for the PCB protection and control board. There are 3 kits of components available, each one enough for one PCB. they will cost USD40 plus shipping which is better than 1/2 the price you would have to pay to buy these components outside a GB. First in best dressed. There will be a larger GB later. Parts have to come from 3 suppliers.
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Old 30th July 2011, 12:02 AM   #376
Horio is offline Horio  United States
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I'll take (2) of these kits if available. =)
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Old 30th July 2011, 12:04 AM   #377
alazira is offline alazira  United States
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I'll take the last one.
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Old 30th July 2011, 12:08 AM   #378
ashaw is offline ashaw  Australia
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And done. Please contact me via PM and I will send you payment details, it will take about two weeks to get the components, and then postage time. I do however need payment up front.
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Old 30th July 2011, 12:25 AM   #379
EUVL is offline EUVL  Europe
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While I understand getting SMD stuff for 10 sets is more economical, it is perhaps wise not to make a big GB out of this, till everything has been thoroughly tested, even though I have built the same circuit over 10 times.


Patrick
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Old 30th July 2011, 12:31 AM   #380
ashaw is offline ashaw  Australia
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I am not. There are 6 boards being made internally, and frankly even if there are changes they will be a few small resistors/caps or layout, not the bulk of this. I do not see the reason not to buy 10 sets. There is little risk for these people, and frankly I will send out any pieces that change on the BOM to these people for free.
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