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DPO with huge Currents

EFI Tuning Fundamentals

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Discussion and questions related to the course EFI Tuning Fundamentals

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Hello,

In order to operate a device with huge current draw (i.e: radiator fans) with a PWM signal from the ECU auxiliary outputs (for speed variations), what should be used ? I guess a relay won't be able to do the job since the frequency of a relay is not that high I suppose ?

Solid State Relay, or Dual-Half Bridge.

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