(Knock detection methods) Re: Maximum advance

[Andrew R. Ghali]

On Mon, 16 Jul 2001 01:32:35 +0200, "Axel Rietschin" <Axel_Rietschin at compuserve.com> wrote:
>
>- ----- Original Message ----- 
>From: "dom" <dom at criticalpath.com>
>To: <diy_efi at diy-efi.org>
>Sent: Friday, July 13, 2001 8:14 AM
>Subject: Re: (Knock detection methods) Re: Maximum advance
>
>> 
>> How would one go about hooking the knock sensor up to an amplifier?
>
>Pretty much like a microphone.
>

A very high impedance microphone.  I believe most knock sensors are piezo-
electric.  That means you need to use a high impedance amplifier and shielded
low-level signal lines.

Andrew

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