Chalky
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Everything posted by Chalky
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That's radiated emissions. A spark gap transmits broad band interference - that's why it upsets the TV. I think Paul has a conducted transient problem and Allan's suggestion of a 46p transient suppressor is the most likely fix. If that doesn't work then he's into more "interesting" EMC fixes.
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The suppressor might work if its conducted emissions, if its radiated it would require a different solution. Has it always done it or is it recent? If it's recent I'd go looking for a missing earth.
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High voltage spike caused by the igniter is probably causing the other units to lock up. You need to fit some form of transient supression to it. Could use a large ferrite coil and wrap the power feed to the igniter round it a couple of times. Alternatively you could use an inductive supressor that you can get for car radios and feed the igniter through that. On the same subject do the wires to the igniter run in the same bundle as the wires to the other loads? If they do have you tried moving them away - it might be coupling that way and moving them might fix it.
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Silly question but have you checked the alternator belt? I've seen this before on a car where it would start at night to go home from work, but not the next morning. The reason was that at night there was a heavy load on the alternator (headlights, heated rear window & fans) and the alternator couldn't charge the battery. In the morning it was light and the the loads weren't on. It charged ok. Your inverter & batteries along with the batteries could be presenting the same load. The belt did not appear to be slipping but when replaced and re-tightened it was fixed. Took me ages to get to the bottom of that one.
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Have you tried Microsoft Visio? More powerful than pagemaker and can occasionally be found as a time limited trial version. It allows you to draw any size you want and then scale the print to fit. I've got a full size drawing (40" in visio) of the boat that prints on A4. It also lets you manipulate pictures (basic stuff), shade colours etc. Basically a 2D cad package.