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GB for DC coupled B1 buffer with shunt PSUs

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Salas

Salas

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Joined 2002
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Atilla said:
It's a little off-topic now, but with all that filtering here, should one really care what type of trafo will go in front of the DCB1 ? :) Poorly made ones excluded, of course.
Click to expand...

As I said, mainly a luxury. But if you are touchy you can pick them up. Looks like the ones with best primary to secondary isolation and electrostatic screening cut more EMI mains garbage that goes around in the loops.
 
A

Atilla

Member
Joined 2008
I think I'll test an R-core I found on ebay for this one. 15-0-15 @ 250mA + 0-9 @250mA. That should work well and I can use the second winding for a DAC I intend to integrate with the buffer. I'll need to heatsink it well, but since current draw is low, I can afford to drop some volts.

How high can I run my voltages, what do you think?
 
regiregi22

regiregi22

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Joined 2009
haciendodelpunkunaamenaza.blogspot.com
Atilla said:
I think I'll test an R-core I found on ebay for this one. 15-0-15 @ 250mA + 0-9 @250mA. That should work well and I can use the second winding for a DAC I intend to integrate with the buffer. I'll need to heatsink it well, but since current draw is low, I can afford to drop some volts.

How high can I run my voltages, what do you think?
Click to expand...
Yes, you can run it with a trafo above 12vac. The output voltage will be a value fixed by the leds.
The only downside is that the mosfets will run a bit hotter, but nothing to worry too much.

regards,
regi
 
Tea-Bag

Tea-Bag

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PRPs

Here is a shot for those who love to look at resistors..:D

50 little mini packs of PRP 9372s.

About one week to go to pay-up.:$:
 

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Tea-Bag

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