[0-30 Vdc Stabilized Power Supply]

Hi
Yes, I said without U2 the voltage at pin 6 is the same at is pin 3.
I agree from this that pin6 shouldn't do that.
I lifted D9 and r9, at pin 3 is 0V -good. Adjust at pin 6 is still from 0 to 11 V- and this is bad.
And i found solution. I had micro short-circuit at r8 and r15.
Thank You very much Audioguru for your time and help. Such trifle, and it be able to lead out with aim man. ;D
One more time Thank You.
Regards Marek.

[0-30 Vdc Stabilized Power Supply]

Hi again.
I know that U2 is placed correctly. I changed U1,U2,U3
I use 22kOhm pot.
Maybe some measure points will help me?
On board beetwen 6 and 3 pin U2 i have 28 Kohm on multimeter, beetwen pin 2 and collector Q4 is 25Kohm.
Something is wrong, and I don't know what :(
Regards
Marek

[0-30 Vdc Stabilized Power Supply]

HI
1) 22 V AC (28 DC on capacitor C1) about 5A
2) I build standard project 0-30V 0-3A
3 )Yes i substitute Q3 with BC556,Q2 with BD243C and r15 with 100 ohm. I nowhere can find 2n2219 or Tip29, Tip31.
4) I didn't load output
5) No , LED is not light
6) voltage at the slider of the voltage adjust pot adjust from 0V to 11.2 without U2.(At 6 pin is the same voltage at pin3 on board without U2). If i insert U2 the voltage is about 25V at pot.
U2) is getting hot. If i solder off pin6 U2 the temperature is normal, but is all time 27V.
Regards and Thanks for interest.

[0-30 Vdc Stabilized Power Supply]

Does it works? I have problems with this projects. Adjustment of Voltage jumps somehow . Anybody can help me please?
AC is 22V, 28 DC. On begin adjustment i have 0V and suddenly jump to 28V and on the end range potentiometer is 16V