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Here's a weird one. A random AliExpress find that counts significant surge arrester incidents and displays the total on an LED display.

Stunningly low power at just 1/10th of a watt. Also keeps the score in non volatile memory, although the PCB design has legacy component positions indicating that it used to need a backup battery.

https://youtu.be/vLRoKqwI79I

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DIN-rail lightning strike counter

Yeah! Weird device that I've never come across before. I kinda want to fit one in my DB just for the gimmick value. It's basically a digital counter with non-volatile memory, that detects high current pulses being shunted by a surge protector and gives a running score. This could be used to monitor for when a new surge protection module was needed, but it is only designed to detect high current pulses, so won't show the accumulated small-transient shunting that can be caused by highly inductive loads in the vicinity. Quite novel though, with sensible design and a stunningly low standby current of just 0.1W. Given that the input is electrically isolated (on this particular unit), I wonder if it could have other event counting uses with a simple low voltage input. If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty. #ElectronicsCreators

Comments

Frank

A nice little device. I would be interested to know if it actually works using that coil. Is there any way to simulate the needed current through a wire that will run through the opening of the coil?

Jeff Larson

I really liking this. Clive do you have a link for ordering?

bigclive

Keeping in mind that they are for 220V use:- https://www.aliexpress.com/item/1005006406078485.html

bigclive

I tried adding a core and snapping a high power magnet onto it, but it didn't work. It really needs something like a dead short through a wire passed through it.