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Forums › Gadgets, robotics, home automation, electronics (including wearables) › Sparkies - help please! Polarity question.


237 posts

Master Geek
+1 received by user: 1


Topic # 126809 20-Jul-2013 15:02
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Hi guys - my sparkie is overseas and want to reconnect a solenoid. It is 12v DC to a 230v AC solenoid. Does it matter the polarity to the 12v DC?!
Thanks




Why work on Wednesday and stuff up 2 good long weekends

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5043 posts

Uber Geek
+1 received by user: 1618


  Reply # 862610 20-Jul-2013 15:06
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If it's designed to activate from 230VAC, then connecting it to 12VDC won't work, which ever way you connect it.



237 posts

Master Geek
+1 received by user: 1


  Reply # 862613 20-Jul-2013 15:15
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The 12v controls the 230v AC
Thanks




Why work on Wednesday and stuff up 2 good long weekends

5043 posts

Uber Geek
+1 received by user: 1618


  Reply # 862621 20-Jul-2013 15:25
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Ah, I see ;-)

Generally, these are not polarised. Are there any labels on the connections to it?



237 posts

Master Geek
+1 received by user: 1


  Reply # 862636 20-Jul-2013 16:00
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Couldn't see any sign of + or - as it it is tucked away in the back of a switch board but thought would try it so got it working! It is a crucial piece of equipment - the push button water supply at the spa - for the whiskey!
Thanks fir the help.




Why work on Wednesday and stuff up 2 good long weekends

3267 posts

Uber Geek
+1 received by user: 77

Trusted

  Reply # 862826 20-Jul-2013 23:26
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The polarity seldom matters, but if it does (for an uncommon biased relay) then it will not damage anything, it would just not switch.




You can never have enough Volvos!

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