Ign outputs

[Gizmo]

Sitting here putting together some looms for S6 GPs to go into 4cyl Subaru's.

It occured to whilst doing it to look have a sniff in Scal to see if the spare Igniter outputs can be configured to do any other jobs, this appears to be the case. But is it ?

Also if this the case what current can they Sink ?

thanks ---john---

[pat]

John,

Any spare output can be assigned to pretty much any function. If you wanted to drive a wastegate solenoid then so be it, BUT... the IGN outputs are low current TTL push-pull types, not the normal high current open collector type. We normally only use them for things that have a fairly high impedance / low current demand. Furthermore it would be wise only to drive resistive loads, not inductive or reactive. Typical "non-ignition" applications are driving the input to fuel pump controllers and the control input of an H-Bridge driver for DBW applications. We do also sometimes feed them into RC low pass filters to generate a pseudo-analogue output for devices that want linear drive.

If your application requires more than 40mA and/or is inductive/reactive then you will need to buffer the output. If you're low on outputs then a buffer is the best option, if you have spare outputs that can drive your application then better off using those.

Hope this helps,

Pat.

[Gizmo]

Thanks for that Pat, now fully aware of what they are good for

Only contemplated it as I was wiring the S6 connector and thought they may be handy/usefull additions.

Seems they may well be

---john---