B1 Power Supply Options - Page 2

Lee35210 · 22nd October 2009, 05:45 PM

I'm using a PSREG power supply board from Welborne Labs, set to 18v with Elna Cerafine caps

Beftus · 23rd October 2009, 12:32 AM

Quote:

Originally Posted by dubai2000

That looks smart - thanks a lot for the info

.

It certainly does! Combine it with a tiny toroid and you're good to go.

budwiser · 24th October 2009, 05:09 AM

Has anyone tried one of these? Energizer Universal Mega Cell Battery Pack

Woot : Energizer Universal Mega Cell Battery Pack

Beftus · 6th November 2009, 05:44 PM

Quote:

Originally Posted by R-K Rønningstad

I bugh the nice and small Velleman K1823 for my B1. It has a LM317, rectifier diodes, and a cap. And a pot to adjust the output voltage.
I replaced the standard 1N4004 (or whatever it was) with some better ones. It only has 1000 uF, but the B1 itself has some capacity, and you can always add some external bulk as well.
At least it is a USD10 or so starting point.

Rolv-karsten

I bought one today too. What did you replace the standard diodes with? I plan to ditch the supplied Jamicon caps and replace them with Panasonics. Mine came with a 2200µF 'lytic, not 1000µF.

Melon Head · 6th November 2009, 07:01 PM

Quote:

Originally Posted by budwiser

Has anyone tried one of these? Energizer Universal Mega Cell Battery Pack

Woot : Energizer Universal Mega Cell Battery Pack

If it is not too expensive give it a go. It defnitely has potential

LucasAdamson · 2nd December 2009, 01:38 AM

I am looking to power up my B1 now as it's all soldered up.

The board not a Pass Labs, but a clone. It has a shared section consisting of 2x 15,000uF caps, a diode, led and resistors before the gain stages, as in the Pass schematic. Isn't this stuff the tail end of a power supply?

Could I simply use a small toroidal transformer and a MUR860 diode rectifier I have spare to supply 18v DC to the unit? Would that be sensible?

Beftus · 2nd December 2009, 12:17 PM

No, I don't think that would a good idea. Feed it from a dedicated PSU which can be either:

-2x 9 volt batteries in series
-a switch mode PSU (think laptop PSU)
-a cheap wall wart
-a diy PSU (rectifiers, capacitance, regulation)

AndrewT · 2nd December 2009, 12:41 PM

Quote:

Originally Posted by LucasAdamson

Could I simply use a small toroidal transformer and a MUR860 diode rectifier I have spare to supply 18v DC to the unit? Would that be sensible?

a 15Vac transformer will give about 22Vdc. This can power your B1, if you increase R1 (the RC of the PSU output filter).

fishski13 · 2nd December 2009, 03:03 PM

i have a sigma11 lying around that i was planning on using for my B1: The σ11 Regulated Power Supply.

LucasAdamson · 2nd December 2009, 03:13 PM

Quote:

Originally Posted by Beftus

No, I don't think that would a good idea. Feed it from a dedicated PSU which can be either:

-2x 9 volt batteries in series
-a switch mode PSU (think laptop PSU)
-a cheap wall wart
-a diy PSU (rectifiers, capacitance, regulation)

Can you explain why what I suggested is not a DIY PSU and why it isn't a good idea? This is how my gainclone is powered, with much smaller caps.

22nd October 2009, 05:45 PM	#11
Lee35210 diyAudio Member Join Date: Jan 2004 Location: Irondale, AL	I'm using a PSREG power supply board from Welborne Labs, set to 18v with Elna Cerafine caps __________________ Been there, Heard that, Forgot what I was listening to!

2nd December 2009, 01:38 AM	#16
LucasAdamson diyAudio Member Join Date: Feb 2009	I am looking to power up my B1 now as it's all soldered up. The board not a Pass Labs, but a clone. It has a shared section consisting of 2x 15,000uF caps, a diode, led and resistors before the gain stages, as in the Pass schematic. Isn't this stuff the tail end of a power supply? Could I simply use a small toroidal transformer and a MUR860 diode rectifier I have spare to supply 18v DC to the unit? Would that be sensible? __________________ Lucas

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24th October 2009, 05:09 AM	#13
budwiser diyAudio Member Join Date: Jan 2004 Location: Greenwood, IN	Has anyone tried one of these? Energizer Universal Mega Cell Battery Pack Woot : Energizer Universal Mega Cell Battery Pack

2nd December 2009, 12:17 PM	#17
Beftus diyAudio Member Join Date: Nov 2008 Location: Netherlands	No, I don't think that would a good idea. Feed it from a dedicated PSU which can be either: -2x 9 volt batteries in series -a switch mode PSU (think laptop PSU) -a cheap wall wart -a diy PSU (rectifiers, capacitance, regulation)

2nd December 2009, 03:03 PM	#19
fishski13 diyAudio Member Join Date: Sep 2008 Location: Minneapolis, MN	i have a sigma11 lying around that i was planning on using for my B1: The σ11 Regulated Power Supply.

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