Questions tagged [mains-supply]
4 questions
3
votes
2 answers
Preventing mains spikes from cheap water pump
I bought a pack of add-ons for my DIY CNC that has a water cooled spindle.
One of the items was the water pump. But when I switch on the pump, a fairly substantial crack can be heard in any speakers that are turned on on the same circuit, as well as…
Kez
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2
votes
4 answers
When using a class 2 built-in power supply, do I still have to attach metal parts of the device housing to PE?
I've got a project of a DIY microcomputer used for control and measurement purposes, which gets mains power via a Meanwell IRM-10 "AC/DC converter" mounted on one of the PCBs, which are then attached to a backplane and mounted in an aluminium…
Neppomuk
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1
vote
0 answers
Mains power supply safety
Curently I'm working on a design (for my own domestic use only) which is to be supplied by 230 V/50 Hz mains.
The IEC cord will be connected too one of these:
Mains Filter with Fuse
After that, the following circuit is used to convert the 230 V…
ElectronicsStudent
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0
votes
1 answer
Why are batteries used with garage and gate motors in South Africa?
In South Africa (230V, 50Hz) as far as I know, most gate and garage motors are connected to a motor controller and powered by usually 12V lead acid batteries, which are then connected to a charge controller to the mains. Why are the lead acid…
Ian Edwards
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