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Unread 02-07-2010, 02:34 PM   #1
Doc
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Default Resistor On 48V Solenoid-Necessary?

On my 48V cart's solenoid, there are 2 small resistors...1 large one going from the 2 large posts, and a smaller one going across the 2 smaller posts. They got VERY hot last summer and the cart hasn't been running since-my question is can these 'blow' and therefore cripple your cart? Where can I get the exact replacement for these? Thanks!
Doc
ps...cart is an '00 48V Carryall.
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Unread 02-07-2010, 02:54 PM   #2
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Default Re: Resistor On 48V Solenoid-Necessary?

They are a diode and resistor the diode (Small) can fry and short out the activation circuit. The resistor is a protective device to prevent fly back voltage from reaching the controller use Exact replacements when possible.
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Unread 02-07-2010, 02:59 PM   #3
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Default Re: Resistor On 48V Solenoid-Necessary?

Any radio shack or electronics shop may be able to match you up if you bring the old part in..... Every golf cart shop will carry them.....
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Unread 02-08-2010, 01:18 PM   #4
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Default Re: Resistor On 48V Solenoid-Necessary?

PS: just so you know the Diode can only be connected in one direction (pay attention to the silver ring on 1 end) the resistor can go either way !
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Unread 02-08-2010, 02:59 PM   #5
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Default Re: Resistor On 48V Solenoid-Necessary?

As I understnd it, the diode is for coil suppression to protect the microswitch that actuates it , and the resistor (250 ohm/5w) is to precharge the capacitors in the controllers internal filters to prevent high inrush current when the contacts close thus extending their life.
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Unread 02-08-2010, 03:15 PM   #6
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Default Re: Resistor On 48V Solenoid-Necessary?

Quote:
Originally Posted by OLD BILL N View Post
As I understnd it, the diode is for coil suppression to protect the microswitch that actuates it , and the resistor (250 ohm/5w) is to precharge the capacitors in the controllers internal filters to prevent high inrush current when the contacts close thus extending their life.
Nicely said
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