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Old 16th February 2014, 03:26 PM   #1381
Tea-Bag is offline Tea-Bag  United States
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Last day to pay up invoice and/or join the Group Buy.
Thanks. Boards will be ordered tomorrow.
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Old 16th February 2014, 10:25 PM   #1382
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Did i need heatsink in 5v 250mA output in 1.1bib? If yes please show me an picture how big for example, i need to know wgat heatsink buy. The same question is for 15v 20mA output, did i need heatsink? Im thinking to use a bottom of my dacs enclosure *** heatsink.
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Old 17th February 2014, 01:34 AM   #1383
Salas is online now Salas  Greece
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Quote:
Originally Posted by bmxmen View Post
Did i need heatsink in 5v 250mA output in 1.1bib? If yes please show me an picture how big for example, i need to know wgat heatsink buy. The same question is for 15v 20mA output, did i need heatsink? Im thinking to use a bottom of my dacs enclosure *** heatsink.
You need to know the max mA consumption of your load hence the excess difference to the CCS current setting you choose. Multiply that dif by the output voltage so to know how many Watts you burn for idle. From there you estimate sinking. Download and study the instructions from post 1. The chassis maybe is adequate for sinking since the voltage multiplier is not high in your case.
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Old 17th February 2014, 10:11 AM   #1384
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For symetricality 15v out i have 2x 17.5v ac transformer, so it is only 2.5v acros the salas, 2.5*0.020(consumtion)=0.05 wat only. Mayby i dont need to put trans to chassis. For 5vdc output i have 8v ac transformers, so 3v acros salas will be 3*0.250mA(consuption)=0.75wats. For now i have first version of salas and the litle heatsinks are only warm, mayby 35-40 C
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Old 17th February 2014, 04:45 PM   #1385
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AC to DC is times the rectification multiplier (~1.35 at those voltages minus the diode drops) so its more than just TxAC-DCout. For more info post technical questions in the builds thread.
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Old 3rd March 2014, 01:50 PM   #1386
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Update:
The boards are delayed in shipment to me. I was expecting them to arrive today - but there was an error in the thickness on a couple of the boards. So I expect about 7 more 'working days' before all the boards arrive.

Sorry for the delay.

Tea
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Old 8th March 2014, 04:46 AM   #1387
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Is it too late to show my interest in purchasing one of these boards. I am wanting to make a gun 5v power supply for a beaglebone black?

Regards

Simon
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Old 18th March 2014, 02:22 PM   #1388
delecoy is offline delecoy  United States
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Received my boards and kits. Thank you much!
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Old 18th March 2014, 04:22 PM   #1389
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Received my boards (6 ) and kits. Thank you very much, they look great!
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Old 18th March 2014, 04:24 PM   #1390
drpro is offline drpro  United States
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+1 on boards and kit pieces.

Thanks Teabag
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