MOD Pass Through Power Supply

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hopeless junkie

Full Member
Feb 15, 2013
9
3
UK
OK,

I'm still debating whether this belongs in 'technical' or not, but I've been told to put it here. If I get this working then it would obviate the need for, risks associated with and expense of batteries for at least the times when I am near a wall outlet.

Can anyone tell me if this (sort of thing) has been tried, and assure me that I will not blow up my VAMO ?

(I make 5V*3A=15W so that ought to run the thing at full tilt (or near enough) - will it decide that 5V is a discharged stack configuration and refuse to work? - it would be easy to set up the regulator for 8V if this is the case)

So, from a newbie thread :-

But, with all this talk of explosions and whatnot I would like to try one of these :-

Mic4576wt 3a 200khz Reg

on the end of a surplus to requirements laptop power supply (19V 40W) in the 5V 3A configuration and use this to power the VAMO as a 'pass through' when I'm at home...
 

Java_Az

Ultra Member
ECF Veteran
Verified Member
Aug 29, 2010
2,071
216
Colorado
OK,

I'm still debating whether this belongs in 'technical' or not, but I've been told to put it here. If I get this working then it would obviate the need for, risks associated with and expense of batteries for at least the times when I am near a wall outlet.

Can anyone tell me if this (sort of thing) has been tried, and assure me that I will not blow up my VAMO ?

(I make 5V*3A=15W so that ought to run the thing at full tilt (or near enough) - will it decide that 5V is a discharged stack configuration and refuse to work? - it would be easy to set up the regulator for 8V if this is the case)

So, from a newbie thread :-

But, with all this talk of explosions and whatnot I would like to try one of these :-

Mic4576wt 3a 200khz Reg

on the end of a surplus to requirements laptop power supply (19V 40W) in the 5V 3A configuration and use this to power the VAMO as a 'pass through' when I'm at home...

The Mic4576 is a switching regulator chip you will have to add parts to it for it to work. Inductor caps resistors. It is not like a linear chips where you might not need to add anything to it but maybe a couple resistors or pot.
I would look into the lm2596 boards. hard to beat @ $1.50 a pop. You can also run them off a 12 volt 2 amp supply. Bucked down to 5 volts it can easily give you 3 amps.
 
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