24v supply will this work

[bluesbaz]

http://yonasty.com/seb/24vpower2.0.pdf

I drew this up and wanted to see if any can see any holidays in the design?

 

[bluebird]

The ceter tap of the transformer needs to go to the 0V ONLY. the negative side of the diode bridge needs to go to the -24V leg ONLY, not to the center tap.

so far with a quick glance thats what I saw.

 

[bluesbaz]

http://yonasty.com/seb/24vpower3.0.pdf

Here is the new schematic

 

[Helsing]

Might want to redesign the phantom using a LM317HV. The Tl783 is being discontinued.

Helsing

 

[Tekay]

I would use atleast 2200uF for the big electrolytics even 2x2200 for each polarity, You can use a LM317T instead of the 783, just put in a 300ohm in serie with the 12k. I use a 10k to ground after the phantom regulator, sometimes the unloaded voltage jump up to 55v without any load.

Goodluck

 

[clintrubber]

This is related to this thread:

http://www.groupdiy.com/index.php?topic=4460

was wondering if the 48V needs a ground as well.

Bye,

Peter

 

[peranders]

The voltage doubler may need some series resistance so you won't wear out the 100 uF 's too soon. 100 ohms maybe. A voltage doubler is a rather heavy application for the caps.

 

[Tekay]

Why not go all the way and built it with LM317/LM337?
you just need some extra resistors! You'll get less noise from your supply with these regulators.
There's a schematics with pcb layout for a universal PSU at my DIY section! www.vintagedesign.se
It also got an additional output for relay and vu powering!

 

[alk509]

[quote author="Helsing"]The Tl783 is being discontinued.[/quote]

I don't think that's exactly true. I made a friend of mine who works at a certain power supply company (I'm in Massachusetts, U.S. - you do the math :wink call TI about this. According to TI, the chip is just being "revamped" because there was some kind of problem at higher currents/temperatures... something like that.

Peace,
Al.

 

[bluesbaz]

Tekay what type of inductor are you using on the phantom out.