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q*bert knocker
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SirPoonga:
Thanks 1up.  A project I wanted to do for years might happen soon :)  I received a gottlieb knocker.  I am going to try and get it working with qbert.  Might need one of those new led controllers :)

Anyway, if you don't know, the knocker takes 27v to knock.  A little more than what you can get from a pc without some sort of invertor circuit. 
I think I have the right toroid for task.  I have a toroid that produces 28v when run through an ac-dc circuit.  would just need the right relay then, right?

Of course then I'd need qbert to trigger it (but not through the keyboard leds like that one specific compile of mame does).
SirPoonga:
Anyone with more electronics experience help me out with this?  I haven't dealt with this much power directly before.  Maybe I should just find a premade ~27v power supply off a website.  I don't want to deal with this toroid that much.  I haven't dealt with them before.
I originally picked up the toroid for a DIY bass amp kit, so all the work was done for me, I just follow instructions.  But that fell through for various reasons.

So now I have this toroid and I think it is convenient since I need 27V  DC and it produces 28V DC when run through an AC-DC rectifier.

To use the toroid all I need to do is on the side that connects to the mains i put an on/off switch for safety.  It has something like 2x19v outputs.  I would have to look up the specs again to verify.  Whatever the specs are when multiplied by that 1.414 number (or was it 1.1414) when run through a rectifier bridge it produced 28V.

I will try and find the specs for it again and post them.  I think it was 230VAC, but don't quote me right now.  I bought it on ebay, they guy listed specs.  But when I looked up the serial number I found different specs.  Which is what really scares me, I need a way to find out what this is exactly.  The manufacturer must not make it anymore, I can't find info from the manufacturer.
Timoe:
whats a "knocker"?
crashwg:

--- Quote from: timoe on June 13, 2005, 05:29:31 pm ---whats a "knocker"?

--- End quote ---

It whacks the bottom or side of the cabinet to make a thud sound when qbert falls of and hits the "ground".
RandyT:
About 20minutes left on this.

$25 plus shipping, but it's cheaper than dead 

RandyT
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