New PSU for Power Amp

[jacobsmith]

H Jacob

Yes got it all working. Have a look at my build here: https://www.youtube.com/watch?v=WGpau-raMho
Its a good stable power supply and can deliver decent currents however i recently upgraded the shunt transistors to TO-247 devices.

The voltage drop over the shunt transistor is around 11V that's with +-35Vdc output and 300VA 0-30-0-30 transformer. My mains is slightly high at 241V hence the high voltdrop. I recently changed the TIP31/TIP32 to a more robust TIP35/TIP36 which is a TO247 package and it is far better. the TIP31/32 couldn't handle the currents. I use a waterblock to cool the TIP35/36 as there is a lot of heat from the 10V drop over the transistors. As well as changing the transistors I upped the voltage to my power amp to +-45 which is the max that the regulator can output but this reduces the heat output from the transistors.


If you want me to measure various voltages just let me know.🙂

Cheers
Dom

Thanks Mr Dom for ur prompt replied
i need the Real measurement, whatever you get in your hand currently.
Like Vac, Vdc in no load, Vdc in full load, V out no load, V out full load,
Pass Tr heat in idle for 10 minutes, full load heat in 10 minutes.
Thats more than enough for me.
Regarding the reg scheme, i think it can be improved a little bit.
any spice files to try if u still had it. appreciate your effort.
* i saw ur video. Very innovatif. Pc mod into Audio gear 😀
next, i think would be Nitro cooling 😉
Btw, what is the Yellow Spiral used for? inside a 5W resistor ?

thanks again.
jc