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Frequency Switch


subieboy

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just use a 5psi oil pressure switch

fit it to the manifold and it can run the IC spray relay when over 5psi

EASY AS :)

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 subieboy']

[quote name='Optical said:

that kit has hysteresis built in already, so you dont need to anything

/quote]

But it only switches one way, I want it to switch both ways...

huh?

i activates a relay when the frequency goes above X, it deactivates the relay when the frequency drops below something a bit less than X

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 Optical']

[quote name='Optical said:

that kit has hysteresis built in already, so you dont need to anything

/quote]

But it only switches one way, I want it to switch both ways...

huh?

i activates a relay when the frequency goes above X, it deactivates the relay when the frequency drops below something a bit less than X

My bad

I need to go back and re-read the tech bits

EDIT: So I just need to add a 5V relay to that for my 5v output... Sweet :)

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i would use a pressure switch like said above .. run a hard wire with fuse off the battery to the switching terminals on the relay . the other switching wire to the pump positive . feed the coil terminal and use the the pressure switch to trigger the coil in the relay by making the switch complete the earth circuit. there's plenty of ways you could wire this though !

why a rpm switch ? thought a pressure switch would be more effective as it will only go when your moving and giving it boost . as Im pretty sure at the strip your not allowed to have water dripping on the start line from water sprayer which a rpm switch will do ?

just a suggestion

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 kamineko said:

i think you need to sit down with someone who understands electronics and nut it out properly :)

Yep that and have a decent nights sleep would help too... (farking Qld Health - story for another day really but condensed ===> unborn baby girl, retarded State govt and 48 hours at hosp...)

WRXONP, the trigger is 5Volt, the pump is 24 Volt truck pump... ;D that I want to trigger by RPM (a PWM signal), hence the Freq Switch

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