Ignition Controllers

[Graham, Peter]

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>Have any one seen the instrument that Link is offering ? Its called
>Knocklink.
>Its made so You can tune it to hear pinging from different engines and  =20
its
>cheap to ($100,)


>Stefan

Stefan
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Silicon Chip published an article where they designed a basic knock  =20
indicator. It is basically a bandpass filter that is gated from the  =20
ignition coil, which is then rectified and filtered and then displayed on  =20=

a 10 led bar graph . If the knocking got to bad they also had a buzzer  =20
that sounded. It could be set to 'tune' out the background noise by the  =20
use of a gain controlled amplifier.

The kit is available from Jaycar Electronics for those in Australia for  =20
A$35. They have a mail order section for those people overseas.
Ph +61-2-9743-6144
fax +61-2-9743-2066
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The kit includes a crystal earpiece and a TO3 transistor for those that  =20
want to make their own knock sensor.


 Peter Graham
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  _--_|\        Peter Graham [Peter.Graham at dsto.defence.gov.au]
 / DSTO \       Maritime Operations Division
 \_.--._/       Defence Science & Technology Organisation
       v        Fax : 61-3-9626 8999  Voice: 61-3-9626 8658
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