Thank you so much for your help.
Is the 560 ohms due to the 0.6 V needed or the Hfqe of the Darlington . If I use a tip 142 instead the BD244 (because have it already), I stay with the 560 ohms also ?
For the symetrical shematice for negative voltage, the sense of the TL 431 is reversed I will use a tip147, but should I stay with the BC337 as well ?
Is the 560 ohms due to the 0.6 V needed or the Hfqe of the Darlington . If I use a tip 142 instead the BD244 (because have it already), I stay with the 560 ohms also ?
For the symetrical shematice for negative voltage, the sense of the TL 431 is reversed I will use a tip147, but should I stay with the BC337 as well ?
The BD244 isn't a Darlington.With the TIP12 (a real darlington) probably 1k will work.
You cannot turn the circuit over and use it for negative voltages, the TL431 is only one way.
Mona
You cannot turn the circuit over and use it for negative voltages, the TL431 is only one way.
Mona
Hello Everyone
I'm building a power supply where I plan to use this circuit, but I also need negative rail, so I make the circuit in MC12 , it works but I didn't have enough experience with MC12, and I can't verify it's stability,
My requirements from this power supply is 500mA ,+-15Vdc or 18V will work too
here is the MC12 file
please check it if anything is wrong let me know I'll do practical test on weekends
I'm building a power supply where I plan to use this circuit, but I also need negative rail, so I make the circuit in MC12 , it works but I didn't have enough experience with MC12, and I can't verify it's stability,
My requirements from this power supply is 500mA ,+-15Vdc or 18V will work too
here is the MC12 file
please check it if anything is wrong let me know I'll do practical test on weekends