WTB: Salas low voltage shunt regulator

FOXYE · 22nd August 2011, 07:19 PM

Want to buy a ready Salas low voltage shunt regulator in 5V and 3.3V vout version.

FOXYE · 24th August 2011, 07:56 AM

UP

merlin el mago · 25th August 2011, 01:49 PM

Isn't so easy: you need to know the load power consumption? what version do you want or need? why don't fill up the Tea-Bag GB for the new BiB version, Salas will guide you in his specific thread to have success.

qusp · 26th August 2011, 03:11 PM

not so easy to get 3v3 out with 5v in either

merlin el mago · 27th August 2011, 09:45 AM

I believe he want two regs: one 5Vout & other 3.3Vout

FOXYE · 29th August 2011, 03:00 PM

UP

AndrewT · 29th August 2011, 03:23 PM

Does it have to be a Shunt Regulator?

A 317 with the lower resistor replaced by a LED can give 3.3V.

Adjust the current through (and thus the voltage of) the LED by changing the upper resistor value.

I used 100r for ~12mA and the reg puts out 3.31V with input varying from 5.5V to 31V

I don't need to trim my 3.31V must replacing the 100r with 150r or 240r with reduce the LED Vf and thus reduce the regulated output voltage.

Add a second LED for 5V output.

22nd August 2011, 07:19 PM	#1
FOXYE diyAudio Member Join Date: Feb 2009	WTB: Salas low voltage shunt regulator Want to buy a ready Salas low voltage shunt regulator in 5V and 3.3V vout version.

29th August 2011, 03:23 PM	#7
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Does it have to be a Shunt Regulator? A 317 with the lower resistor replaced by a LED can give 3.3V. Adjust the current through (and thus the voltage of) the LED by changing the upper resistor value. I used 100r for ~12mA and the reg puts out 3.31V with input varying from 5.5V to 31V I don't need to trim my 3.31V must replacing the 100r with 150r or 240r with reduce the LED Vf and thus reduce the regulated output voltage. Add a second LED for 5V output. __________________ regards Andrew T.

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24th August 2011, 07:56 AM	#2
FOXYE diyAudio Member Join Date: Feb 2009	UP

25th August 2011, 01:49 PM	#3
merlin el mago diyAudio Member Join Date: Sep 2009 Location: Blanes - Costa Brava	Isn't so easy: you need to know the load power consumption? what version do you want or need? why don't fill up the Tea-Bag GB for the new BiB version, Salas will guide you in his specific thread to have success.

26th August 2011, 03:11 PM	#4
qusp Sometimes a square peg fits a round hole just fine diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	not so easy to get 3v3 out with 5v in either

27th August 2011, 09:45 AM	#5
merlin el mago diyAudio Member Join Date: Sep 2009 Location: Blanes - Costa Brava	I believe he want two regs: one 5Vout & other 3.3Vout

29th August 2011, 03:00 PM	#6
FOXYE diyAudio Member Join Date: Feb 2009	UP

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