Gregor 4,847 #1 Posted February 10, 2021 The machines I use to work on had a lot of switches, relays, several motors, contactors, a transformer, and fuses to protect all this. Over a span of 40 years I think I learned a fair amount about electricity, and switching. But there are still some things that befuddle me. The counter on my coil winding machine is self powered with a battery. You do not have to supply external power.The counter is activated by a proximity switch. Every time the magnet passes the switch, it counts. Last Saturday, I removed the battery to keep it from corroding, and ruining the counter. I don't anticipate having to wind any more coils in the near future. Without the battery, the counter is still functioning, 5 days later. This is one of the things that befuddle me. So why? Share this post Link to post Share on other sites
8ntruck 7,839 #2 Posted February 10, 2021 There is probably a capacitor in the counter somewhere that is still powering it. Might be a feature to prevent the count from being lost when the battery is removed. 8 1 1 Share this post Link to post Share on other sites
ebinmaine 72,706 #3 Posted February 10, 2021 23 minutes ago, 8ntruck said: There is probably a capacitor in the counter somewhere that is still powering it. Might be a feature to prevent the count from being lost when the battery is removed. I'd go with that... Share this post Link to post Share on other sites
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