Opto triggering of ssg multicoil

[brodonh]

I've got the slotted timing wheel but I'm not getting a response from the trannys.
Need a known to be good for ssg circuit.
My IR diodes are testing as good but when I hook it up I'm missing something.
Tying the grounds is required.
I'm sure someone has done it and can help.
thanks
bro d

[Faraday88]

Hi All,
I want to switch a multicoil SSG with opto switching and havn't tried it yet.

Can someone of us provide a link or circuit?

Thanks,

bro d

Hi Brodonh,

You may need to make slots in the timming wheel to be able switch with the Opto-coupler, but this is just as same as using Magnetic pick up.....
Rgds,
Faraday88.

[brodonh]

Hi John,

I have a motor that runs with mosfets at 3-400v and I'm using IR diodes to sw the mosfets.

It works very well. No blown mosfets because of the added diode protection.

I tried the same IR setup with a 2 coil ssg and I've been baffled for 2 days.

Tried a darlington pair, adding voltage and we are still motionless with it.

I'm so used to making SSG circuits with trigger winding that I never learned what the MJL21194's really need to switch on.

Data sheet says max 5v,5a.

What do you say?

bro d

[John_Koorn]

Hey bro d, why do you want to do that?

John K.

[brodonh]

Hi All,
I want to switch a multicoil SSG with opto switching and havn't tried it yet.

Can someone of us provide a link or circuit?

Thanks,

bro d