bigal.nz 59 Posted April 27, 2021 Share Posted April 27, 2021 This might be a long shot - but does anyone have a Balmar MC-614 regulator I could borrow for a day? I am trying to find out why my MC-614 is generating noise on my sonar, and want to rule out a faulty unit. Quote Link to post Share on other sites
waikiore 399 Posted April 27, 2021 Share Posted April 27, 2021 There are a lot of them out there so I would be surprised - but maybe Quote Link to post Share on other sites
marinheiro 352 Posted April 28, 2021 Share Posted April 28, 2021 A left field idea - you can make a temporary test rig by using a 12V light bulb. Find a small one around 6 watts or so with a holder, solder a reasonable length of wire to each end. Connect this to a 12V source and to the field terminal on the alternator, of course after unplugging the lead. Check the alternator to see if it needs a separate 12V supply to excite the windings. This will put a bit of a load on the alternator so you can at least get an idea if it is something other than the Regulator. You can of course just direct jump a 12V supply to the field terminal which will make the alternator immediately go to full load. The German guy on the cat Fallado had his regulator fail and made up a temp one like this with 4 light bulbs and switch for each so he could vary the field current Quote Link to post Share on other sites
bigal.nz 59 Posted April 28, 2021 Author Share Posted April 28, 2021 Thanks - but I don't think that is what is going to help. I am trying to isolate where a noisy signal is coming from - its do with the alternator regulator and I think its either EMI or noisy 12v output from the switch mode side of the regulator. Quote Link to post Share on other sites
aardvarkash10 960 Posted April 28, 2021 Share Posted April 28, 2021 fixed frequency (the noise I mean)? Quote Link to post Share on other sites
bigal.nz 59 Posted April 28, 2021 Author Share Posted April 28, 2021 There is a pattern to it yes. Appearing on one particular channel of the sonar. Quote Link to post Share on other sites
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