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| Q-bert controls software asjustment ? |
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| juggle50:
Okay guys, how's this. It's the same as poonga's with the addition of the diode and fuse. However, I think by drawing it I've got a better understanding of how the relay works. Correct me if I'm wrong, but doesn't the positive current just pass through the relay which completes the circuit electromagnetically when switched on by the led wiz? Also, what device would I use to test the circuit without the knocker? And finally, because my ledwiz is quite hard to easily access, can I hook up a 4.8 volt battery pack with a switch and manually turn on the circuit to simulate the led wiz in order to test everything? Thanks again fellas. |
| Level42:
Hey Juggle, yes in theory this should work. You don't need to actualy connect another device then the knocker to test the circuit, you should hear the relay clicking when triggered. You can do the battery thing, but run it without the knocker attatched. OR don't use a switch, but very momentarely touch the plus side of the terminal of the battery with a wire to simulate the trigger pulse. To 2600: yous comments seem correct to me. (Those are cunstructive comments :) ) Sorry for my harsh reply earlier. I wonder if we can two more resistors to devide the voltage so we can bring it down to a safe voltage for the Vbe. Alternatively, something like a 7805 could work, but you can't put 30V directly into that.... |
| 2600:
Woops forgot about this thread, been busy. Juggle, the diode should be across the + and - that is in between the LEDWIZ and Relay. The other part looks fine if I am reading your drawing correctly. Level42, Datasheet says you can feed 35V into an LM7805, but regulating down to 5V it's going to get hot. The question is do you need to isolate the power? You are isolating the IPAC, do you need to isolate the power or protect it or none of the above? |
| Level42:
Wrong again...sorry... |
| juggle50:
Does that mean that I need two diodes? One for the + and one for the - going from the ledwiz to the relay? Right now I'm playing around with lsq files and lwa files in powermame to isolate the ledwiz port so only the knocker fires and not everything else in when qbert falls off. What is everyone else using for the fuse. I'm going to buy all that stuff this week. Thanks for your help guys. |
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