power supply choke with a connection for AC ground?

jarthel · 16th March 2007, 05:07 AM

I bought a choke and it has a 3rd wire for the AC ground. this wire is not connected to any of the other 2 wires.

should I connect this to ground? does it have any positive effect?

thank you.

leadbelly · 16th March 2007, 05:10 AM

Quote:

Originally posted by jarthel
should I connect this to ground?

Yes, just as you would/should chassis ground any power transformer.

Quote:

does it have any positive effect?

Potential life extension

jarthel · 16th March 2007, 05:55 AM

thank you

senderj · 16th March 2007, 06:49 AM

If my choke does not have one, is it possible to make one myself? From the metal surface of the choke to AC ground or psu ground?

leadbelly · 16th March 2007, 10:10 PM

Quote:

Originally posted by senderj
If my choke does not have one, is it possible to make one myself? From the metal surface of the choke to AC ground or psu ground?

Yes, the metal of the choke should be grounded. If mounting to a metal plate, I don't bother with a separate wire, I just make sure that there is metal-metal contact (not painted-metal-to-metal contact). If there is some reason why that can't be done, I just make a bonding wire with a washer style connector on the end so that the mounting screws will hold the wire to the metal.

16th March 2007, 05:07 AM	#1
jarthel diyAudio Member Join Date: Jan 2002 Location: somewhere in Australia	power supply choke with a connection for AC ground? I bought a choke and it has a 3rd wire for the AC ground. this wire is not connected to any of the other 2 wires. should I connect this to ground? does it have any positive effect? thank you.

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16th March 2007, 05:55 AM	#3
jarthel diyAudio Member Join Date: Jan 2002 Location: somewhere in Australia	thank you

16th March 2007, 06:49 AM	#4
senderj diyAudio Member Join Date: Feb 2006 Location: Hong Kong	If my choke does not have one, is it possible to make one myself? From the metal surface of the choke to AC ground or psu ground?

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