diodes across relay coils

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tazzyt25

Member - Posts: 5

Joined: July 15, 2003

Posted: July 15, 2003 at 12:46 PM / IP Logged

could someone make sure i have this right...

to place a diode across the coil of a relay, i would connect +12 and the anode to terminal 85 and i would connect ground and the cathode to terminal 86 on a standard SPDT relay.

if this is correct, please let me know.. if not, please correct me...

thanks

xetmes

Silver - Posts: 586

Joined: May 18, 2003

Posted: July 15, 2003 at 2:07 PM / IP Logged

No the other way around, Positive to the cathode and ground to the anode. If you hook it up that way the diode is going to pass most of the current and the relays coil will not get enough current, plus it would defeat the purpose of the kick-back diode.

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diodes across relay coils

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