Possible wiring config. for dual power source

[EricZ]

For my gatlin gun headlight I am looking at the possibilities for wiring the leds to allow for a dual power supply. I am making a plastic disc with copper rings for carbon brushes to run on as the assembly rotates. Here are the two circuits I want to make:

1. Six XP-G's wired in series that will be driven by a Hyperboost driver.

2. Each led wired individually only receiving power from a voltage regulated supply as the led rotates into the top position.

I have figured on making 2 carbon brushes running on copper rings that will supply power from the hyperboost driver to the series wired leds no matter what rotation the headlight assembly is in.

The possible configuration for the intermittent power supply are two additional carbon brushes with small copper contacts positioned so that as the headlight assembly rotates, the brushes will power each led individually as the copper contacts rotate into position. Even though the leds are already wired in series, the current will flow through the path with least resistance so only the one led will light.

Here is a crude diagram I made in ms paint

Can anyone understand this and any suggestions??

 

[AnAppleSnail]

Depends on the driver, really. You could buy, say, a 1000 mA driver and a separate boost driver, wire them so the boost mA driver is slaved to the control of the 1000 mA driver, and have a switch that powers the boost mA or not. It's something that can be done with AM7135-based (I think that's the chip? Has 3 legs) drivers. Are you making it gatling for different colors?

 

[purduephotog]

I understand what you say you want to do- but I'm trying to understand why you want to do it that way.

Are you wanting to spin the barrel and have 'flashes' of light come out ? If that's the case you could use an optical coupler, spin the barrel, and only have one LED with (even as simple) as a magnetic reed switch turning it on and off.

Anyway, interesting concept- but I don't know about the practicality.

 

[znomit]

Are you wanting to spin the barrel and have 'flashes' of light come out ? If that's the case you could use an optical coupler, spin the barrel, and only have one LED with (even as simple) as a magnetic reed switch turning it on and off.

+1
This is the way to go.

Oh and hyperboost will put out 80V while it waits for the next LED to spin past(which will then get fried).
You'll need to put a driver in each barrel.

 

[EricZ]

The reason for the brushes and contacts is so that I can run 1. The hyperboost driver to power all 6 leds when I need a headlight and 2. to allow a separate voltage regulated source power the leds individually while the gatling gun spins for a cool aux. firing "look". The two separate power sources will never be energized at the same time. I need all six leds for the light output needed for night riding and I want to have both functions just because the gatling gun would be more interesting if It could not only work as a headlight but simulate firing as well.