Dedicated PSU for DEQ/DCX2496

[gypsielectro]

Very interested in buying one

and the transformer, when these become available

El Gypsy

 

[stef1777]

Re: Very interested in buying one

and the transformer, when these become available

El Gypsy

I ordered the proto last week. Need to wait 2/3 weeks.

If all is fine, I'll order quantity to sale a "bundle" PCB+transformer sometime in july. I'll do a "group buy" to have an idea of the quantity to order.

But first, I should solder and test the prototype...

.

 

[gypsielectro]

El Gippo replies

Thanks, I'll follow up on your posting here then

best!

El Gippo

 

[stef1777]

The prototype is working. No error except some silk mask errors. I can't test it inside the DEQ as I don't have the right transformer yet.

.

 

[Ryssen]

Nice!
But why not C-L-C on the 3,3v 5v, and 9v?

 

[stef1777]

Nice!
But why not C-L-C on the 3,3v 5v, and 9v?

No space left.

The analog 9v have one VK200 at output. The digital 3.3v and 5v doesn't have them but it's not very important. Good load, speed and stabiliy is more important for digital.

Stef...

 

[Ryssen]

Ok,I´m not the expert..

 

[ampsarus]

These look very nice indeed! Will these work in DCX and SRC as well as DEQ? If so, I'd like to buy enough parts for 2 DCX's, an SRC and a DEQ.

 

[stef1777]

These look very nice indeed! Will these work in DCX and SRC as well as DEQ? If so, I'd like to buy enough parts for 2 DCX's, an SRC and a DEQ.

I don't know very well the SRC. If it us ethe same PSU as the 2 others, yes.

For the DCX, you will have may be to move the DSP board and change one cable.

 

[ampsarus]

Looks great stef! The SM parts on the small board have me scared though. *shudders* Please say you are going to offer these as kits when you get yours worked out. Count me in.

Anyone know if the SRC supply is the same? I'm guessing it must be, why would they spec another P/S? ...but I'm guessing.

 

[stef1777]

Looks great stef! The SM parts on the small board have me scared though. *shudders*

The small board is a try of a small TCXO clock board. The board will contains a 16Mhz TCXO and it's 3.3v power supply (10uVrms/-75db). Should be connected to the integrated 5v digital.

.

 

[Ryssen]

Anyone know if the SRC supply is the same? I'm guessing it must be, why would they spec another P/S? ...but I'm guessing

Do some searchin on the web,I´m 99% sure you will find some info/pictures on the SRC...

The board will contains a 16Mhz TCXO

Hmm,my XO3 contains a 24,570Mhz christal .Whats the 16Mhz for?

 

[stef1777]

Hmm,my XO3 contains a 24,570Mhz christal .Whats the 16Mhz for?

Writing error.

 

[Pulse-R]

The SRC is already a linear power supply, and only a small board - might be worthwhile to upgrade the clock, but the PSU is already quite good in there.

stef,

Put me down for 4 of these PSU kits and 2 of the clock, maybe more later from others here in Oz.

Simon.

 

[ampsarus]

The SRC is already a linear power supply, and only a small board ....

Thanks, the SRC is the only Behringer piece that I never opened.
That brings my P/S needs down to 3. (using an Apogee clock for SRC and DEQ)

 

[stef1777]

Concerning the custom made transformer. I only plan a European version (230v) for cost reason. But, I can may be ask for a 2x115v version on the primary if people are interested.

Still waiting for the transformer prototype...

Things are so slow with suppliers.

.

 

[stef1777]

Hi Folks!

I finally received the custom made transformer just before leaving for my summer vacations this week-end.

The system works but a little too hot at first. I've to modify the circuit to have something cooler. The digital rectifier bridge was too small. I replaced it with an in line 4A bridge. The 3.3v regulator is now connected after the 5v regulator. The 3.3v regulator was too hot. Heat sinks are a little too small but I have no space to use larger one's. The box will need to have vent holes.

Currents are equal to the original PSU. I'll try to optimize more when I will be back. I've started to move some components on the PSU to have a better cooling.

.

 

[Ryssen]

The 3.3v regulator is now connected after the 5v regulator.

Doesn´t the 5v reg get even hotter then?Even if fitting bigger sink the heat have to go somewhere..(went holes..)
Nice trafo.

 

[stef1777]

Doesn´t the 5v reg get even hotter then?Even if fitting bigger sink the heat have to go somewhere..(went holes..)
Nice trafo.

In fact, I went back to the original right now. The 3.3v still produce heat unless placed after the 5v. I also replaced the bridge with 4 Schottky. I removed the LM3xx heat sink. No need. Later, my plan is to try with an LM3940 for 3.3v, remove the 3.3v heat sink and move the caps too close from the sink (big error from me on this).

After 1 hour, box closed: 65°C for dissipators. 41°C inside the box. Not too bad. My DEQ have some small holes at the top rear. The transformer seems ok. This is a good. Very good quality.

.

 

[AR2]

Any chance of moving these two regulators on the edge of the board, so than we could have an option for cooling with the heat spreader and using the case as the heat sink, or maybe just one bigger heat sink for both regs and still out of the way from the board?