Help STK 4231 ! ! ! !

shimul · 2nd February 2012, 05:51 PM

I built a stk 4231.What is the transformer requirements???

GloBug · 2nd February 2012, 06:07 PM

Well isn't it a little late now??

STK4321 runs off -/+40 to -/+60 RECTIFIED.

Stay with the lower voltage unless you have proper heatsinking, which is also0 in the data sheet.

shimul · 3rd February 2012, 07:02 AM

Thanks Globug.I have a 39-0-39 tansformer.Can i use it ? ? ? STK 4231 maximum vcc is +/- 75.

CJ900RR · 3rd February 2012, 08:05 AM

39V AC will give ~55V DC after rectification, so it should be safe to use that one.

shimul · 3rd February 2012, 12:18 PM

Thanks CJ900RR.But Power supply is split.My question is if i use split power supply voltage increase to double.So 39v become (39+39)=78 !.Help me plz!!!!!!!!!!!!

sgrossklass · 4th February 2012, 08:25 PM

You'd obviously obtain approximately +/- 55 V, which should be OK. Make sure you use good cooling, as STKs aren't exactly the very most rugged affairs.

shimul · 9th February 2012, 04:37 PM

thx

2nd February 2012, 05:51 PM	#1
shimul diyAudio Member Join Date: Jan 2012	Help STK 4231 ! ! ! ! I built a stk 4231.What is the transformer requirements???

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2nd February 2012, 06:07 PM	#2
GloBug Banned Join Date: Jun 2011	Well isn't it a little late now?? STK4321 runs off -/+40 to -/+60 RECTIFIED. Stay with the lower voltage unless you have proper heatsinking, which is also0 in the data sheet.

3rd February 2012, 07:02 AM	#3
shimul diyAudio Member Join Date: Jan 2012	Thanks Globug.I have a 39-0-39 tansformer.Can i use it ? ? ? STK 4231 maximum vcc is +/- 75.

3rd February 2012, 08:05 AM	#4
CJ900RR diyAudio Member Join Date: Jan 2006	39V AC will give ~55V DC after rectification, so it should be safe to use that one.

3rd February 2012, 12:18 PM	#5
shimul diyAudio Member Join Date: Jan 2012	Thanks CJ900RR.But Power supply is split.My question is if i use split power supply voltage increase to double.So 39v become (39+39)=78 !.Help me plz!!!!!!!!!!!!

4th February 2012, 08:25 PM	#6
sgrossklass diyAudio Member Join Date: Nov 2004 Location: Germany	You'd obviously obtain approximately +/- 55 V, which should be OK. Make sure you use good cooling, as STKs aren't exactly the very most rugged affairs.

9th February 2012, 04:37 PM	#7
shimul diyAudio Member Join Date: Jan 2012	thx

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