Help STK 4231 ! ! ! !

[shimul]

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

 

[GloBug]

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]

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

 

[CJ900RR]

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

 

[shimul]

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]

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]

thx