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The Terminator
Terminator Talk
FPDM Output Frequency?
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<blockquote data-quote="SecondhandSnake" data-source="post: 16400633" data-attributes="member: 116684"><p>Thanks. From what I gather across the internet the consensus seems to be 25kHz is the fuel pump frequency. Though for anyone reading I will mention that it's less of a PWM and more of a pulse where the FPDM closes a ground on it. Ex a PWM would go hi/lo/hi/lo where as the fuel pump (-) goes open/lo/open/lo. This can be effectively used for PWM with some manipulation but that's another story.</p><p></p><p>I haven't been able to figure out anything to change PWM frequency without a microcontroller, but I'm no expert.</p></blockquote><p></p>
[QUOTE="SecondhandSnake, post: 16400633, member: 116684"] Thanks. From what I gather across the internet the consensus seems to be 25kHz is the fuel pump frequency. Though for anyone reading I will mention that it's less of a PWM and more of a pulse where the FPDM closes a ground on it. Ex a PWM would go hi/lo/hi/lo where as the fuel pump (-) goes open/lo/open/lo. This can be effectively used for PWM with some manipulation but that's another story. I haven't been able to figure out anything to change PWM frequency without a microcontroller, but I'm no expert. [/QUOTE]
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FPDM Output Frequency?
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