Re: It works! Solid state driver

• To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
• Subject: Re: It works! Solid state driver
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Sun, 7 Dec 1997 22:57:07 -0600
• Approved: tesla-at-stic-dot-net

From: 	Scott Stephens[SMTP:stephens-at-enteract-dot-com]
Sent: 	Sunday, December 07, 1997 6:14 PM
To: 	Tesla List
Subject: 	Re: It works! Solid state driver

At 07:55 AM 12/6/97 -0600, you wrote:
>
>From: 	Harri Suomalainen[SMTP:haba-at-cc.hut.fi]
>Sent: 	Saturday, December 06, 1997 8:39 AM
>To: 	Tesla List
>Subject: 	Re: It works! Solid state driver
>
>Transistor blow-ups may also be due to saturation of core resulting in
>huge current. Make sure your pulse-by-pulse current limiting is working.

How do you implement this? My thinking would be to turn off the FET when a
comparator, monitoring Drain-Source voltage triggers.

Using a current-sense winding off the transformer would fail if the core
saturates?

I see this feed-back connection, for pulse-width current regulation, putting
some interesting poles in what would otherwise be a simple, clean transfer
function. Yuk. Good thing I've got a simulator. This may also mean using
clocked logic (flip-flops) to gate rather than simple gates, so higher
frequency oscillations don't occur, resulting in terrible switching losses.

OK, I need a switching regulator chip. Recommendations?

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