M
mollydog
I came across this LINK on Wikipedia the other day, since then I’ve done some googling and found out this is a known fact that if relay hasn’t got a diode fitted, this might/will cause a spike and might damage something on the Elise S1 circuit.
I copy~pasted this form google
"Since an inductor (the relay coil) cannot change it's current instantly, the flyback diode provides a path for the current when the coil is switched off. Otherwise, a voltage spike will occur causing arcing on switch contacts or possibly destroying switching transistors”
My concern is that a year or two back I fitted a relay to the coolant temp circuitry to be able to also read the oil temp on the Stack, and another relay to be able to switch on the rad fan should the temp rise too much in traffic jam,
I am sure these relays didn’t have a diode fitted in them, is this something I should rectify or is there nothing on the Elise S1 circuitry that fragile?
Relay without diode:
Relay with diode that will prevent Flyback:
(I have the flyback showing going in the wrong direction)
I have come across these inline diode,
would these be an easy option instead of having to replace the old relays with new ones fitted with a diode?,
as the relays are in very tight spaces, it’ll be hard if not impossible to see the pin numbers to re fit the wires to the correct pins after un plugin them
many thanks for any advice that can be given
I copy~pasted this form google
"Since an inductor (the relay coil) cannot change it's current instantly, the flyback diode provides a path for the current when the coil is switched off. Otherwise, a voltage spike will occur causing arcing on switch contacts or possibly destroying switching transistors”
My concern is that a year or two back I fitted a relay to the coolant temp circuitry to be able to also read the oil temp on the Stack, and another relay to be able to switch on the rad fan should the temp rise too much in traffic jam,
I am sure these relays didn’t have a diode fitted in them, is this something I should rectify or is there nothing on the Elise S1 circuitry that fragile?
Relay without diode:
Relay with diode that will prevent Flyback:
(I have the flyback showing going in the wrong direction)
I have come across these inline diode,
would these be an easy option instead of having to replace the old relays with new ones fitted with a diode?,
as the relays are in very tight spaces, it’ll be hard if not impossible to see the pin numbers to re fit the wires to the correct pins after un plugin them
many thanks for any advice that can be given
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