Message-ID: <01aa01c0f3e2$60226840$1601a8c0@maly.cz.gmc.net>
From: "Petr Maly \(Seznam\)" <ok1fig@seznam.cz>
To: rsgb_lf_group@blacksheep.org
References: <7D653C9C42F5D411A27C00508BF8803D55C4CE@pdw-mail-r1.dstl.gov.uk>
Subject: Re: LF: RE: 73kHz tests tonight
Date: Wed, 13 Jun 2001 10:25:16 +0200
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Could TC4428 be keyed in G3YXM design? If so, it would simplify the whole
schematic.

Petr, 'FIG

----- Original Message -----
From: Talbot Andrew <ACTALBOT@dera.gov.uk>
To: <rsgb_lf_group@blacksheep.org>
Sent: Wednesday, June 13, 2001 9:43 AM
Subject: RE: LF: RE: 73kHz tests tonight


> One option would be to use the TC4428 driver chip.  This has one inverting
> and one non inverting driver.   Drive both inputs in parallel and connect
> the FET driver transformer primary, now with twice as many turns, between
> both outputs.  That way you can double the drive capability without
running
> into the problems with the unequal switching times that can give trouble
> when trying to parallel up two devices with totem pole outputs
>
> Andy  G4JNT
>
>
> > -----Original Message-----
> > From: James Moritz [mailto:j.r.moritz@herts.ac.uk]
> > Only real problem so far was getting the gate driver to work - even
> > with both sections of a TC4427 driver IC in parallel, the drive
> > waveform had rather slow edges when feeding the 4 large-
> > geometry FETs in parallel,
> >
>
>
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