Really need help on new seoul build

Im using 1 cr123 in vg fb1 and a surefire exe head with an aleph le built with a seoul p4. What converter do i use?????? Im so confused with what each one does bb versus the ng 750 or 500 ma

You could use a Flupic from Goldserve and have multiple levels, strobe, and SOS.

Nitroz said:

You could use a Flupic from Goldserve and have multiple levels, strobe, and SOS.

Click to expand...

Or new regulated Piglet here.

But be aware, the Flupic and Piglet needs RCR LiIon.

Best regards

_____
Tom

I'm just thinkin to stay with one brightness setting. Will the NG500 do what I want. Is it a buck/boost or just a boost converter?

Not sure but I guess with the NG500 you will get problems using a primary cell, due to the low voltage.
With one brightness level, a Badboy500 Step-up converter should fit your bill.

Best regards

____
Tom

Both the NG and BB drivers are boost only. I've been using the new GD driver from the Shoppe in single cell lights, which is buck/boost. Love it, gives you the option of using primary 123's or R123's. It's designed to use either so you're not 'pushing the limits'. The Shoppe has blanks and can whip you one up with any drive level you wish. I'd personally stay at no more than 500ma. Plenty bright with the Seoul and decent runtime.

What resistors do i need to make a gd500 do i only need 1 resistor or 2?The calculator gives me a choice between one or 2 resistors and i dont know what to choose.

If anyone can just tell me exactly what to order from the shoppe to make a gd500 would be greatly aprecciated

You would need a .10 at R1 and nothing at R2......

Long John said:

But be aware, the Flupic and Piglet needs RCR LiIon.

Best regards

_____
Tom

Click to expand...

The piglet, you do not need li-ion. It is fully buck/boost. However, you won't get much more than 500ma off a primary.

Dan C said:

Both the NG and BB drivers are boost only. I've been using the new GD driver from the Shoppe in single cell lights, which is buck/boost. Love it, gives you the option of using primary 123's or R123's. It's designed to use either so you're not 'pushing the limits'.

Click to expand...

Be carefull when using the Nexgen with R123's and LEDs with low Vf. The voltage in should not be more than .7 volts over the voltage out (forward voltage (Vf) of the LED)
Keep in mind that R123's are 4.1v - 4.2v when freshly charged.

goldserve said:

The piglet, you do not need li-ion. It is fully buck/boost. However, you won't get much more than 500ma off a primary.

Click to expand...

Sorry Goldserve my bad

You are right (logical as creator), I was thinking in dimensions of driving the Led at full power

Best regards

_____
Tom