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Re: ignition coil
From: Michael Smith[SMTP:md.smith-at-usa-dot-net]
Reply To: md.smith-at-usa-dot-net
Sent: Monday, July 28, 1997 2:15 PM
To: Tesla List
Subject: Re: ignition coil
>
> From: Kenneth Aaron[SMTP:kennetha-at-geocities-dot-com]
> Sent: Monday, July 28, 1997 11:45 PM
> To: Tesla List
> Subject: Re: ignition coil
>
>
> >
> >a comment - if you charge a capacitor to about 450 to 500 V and then
discharge
> >it into the ignition coil through an SCR you will get an excellent
result.
> >This is basically a capcitor discharge ignition. Get an SCR rated at
1 or 2
> >amps continuous (that will give you 40 to 100 amps pulse) and you are
all set.
> > use a 555 oscilator to drive the gate at the desired freq, and use a
short
> >pulse (e.g. no square wave drive here).
> >
>
> How do you switch the SCR off , it can't be switched off with 0V in the
gate.
> ----------------------------
> Kenneth Aaron
> E-mail : kennetha-at-geocities-dot-com
> http://www.geocities-dot-com/SunsetStrip/8736/
> ----------------------------
>
You must interrupt the current from cathode to anode on an SCR to turn it
off. Once biased on, it is a diode until current stops.
hope this helps...
Michael Smith
md.smith-at-usa-dot-net