Yes I am aware that they are not available. Having looked at one though I see only two supplies, 12V and 24V. It occurs to me that this can not be hard to build.
I've built a few car amps. I designed a real dandy one with a DC to DC convertor, and while I never built the whole thing, I did build the convertor. Anyone need 36VDC in a car at 10 amps ?
It needs 24V @ 6A and 12V @ 3A. This is niot a tall order, and demand is there. One is on the eBay want it now list and there is alot of bitching going on about this. The fact is Protron never intended to make any parts available whatsoever.
In my view, that created a vacuum, a demand not being met. these things are not very old. What did they cost ? What can I build the power supply for ? How much money can I make.
In the case of a 40" or whatever, widescreen HD LCD direct view, I don't think it cost less than $1,000. Maybe this one's a 30", but still it cost something. What if my power supply was like $200 ?
Years ago I developed an SCR regulator circuit, never built it but I know it'll work. This is the simplest switching regulator possible. I won't reveal the circuit right now but I'll tell you the principal on which it works.
TV techs should remember the SCR regulators in TVs years ago. A couple, Emersons and Sylvanias would get a condition where the set was running but the phase modulated trigger pulses were missing. Sets like this that used zener diodes to start the circuit would make a noise, and possibly display a picture that was described as a Chistmas tree. This was the SCR firing off the zener and turning off as soon as the voltage equalized.
My idea is to tune the load of the circuit so that this happens alot more quickly, in the kilohertz range. This would be accomplished with some inductance, and limited capacitance loading. Of course it may need some tweaking and if I can't get it working in a timely fashion I might have to resort to more conventional technology. Either way I know I can build the thing.
I would use switching regulators anyway, whatever configuration, but really, I think I would stick with a conventional power transformer for the DC.
This is something I should look into, anyone interested, contact me, or post here.
JURB