Using solid state relays (SSRs) on cars

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How sold state relays (SSRs) work and how to wire them up.
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The current and voltage are obviously important, but another spec that needs to be mentioned is the highest PWM frequency in Hz the SSR can operate at. Even the best/highest priced SSRs can only operate at a max of 1kHz. That may not be ideal for something like a fuel pump, so far as longevity are concerned. A fuel pump would benefit from a controller that switches at a fairly high frequency, preferably also past the range of human hearing for example.

slofouru
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What is the meaning of 80dd 100dd mentioned on ssr? 🤔

dharmendrasuthar
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Yes thanks Chrysler and Dodge use TIPM, do you know anything about CAN buss signals? The TIPM using a bunch of SSR relays but I'm not sure why cars use SSR relays, any reasons why?

billwilliams
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Juilian Edgar, How does a TIPM work or what does it do, i seen relays on TIPM works often

billwilliams
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JULIAN EDGAR, Does SSR relays use JFETS or MOSFETS? and why are SSR relays better compared to other relays?

billwilliams
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How hot do these get when running a big load like a cooling fan or something? Do you need them to be in pretty well ventilated space or fine to have them buried away in an enclosure?

Adam-hspn
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Do you need to put an inline fuse or circuit breaker on both supplies?

amiabledave
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How are these for an extra injector driver, taking a signal from one of the cars injectors? thanks

aaaaaaaaaaaaaa
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So Output... Positive = Common. And Negitive = NC/NO

charleshayes