Mouser's name for a MAT-02

Magnus Danielson cfmd at swipnet.se
Sat Jan 13 20:45:38 CET 2001


From: "Ian Fritz" <ijfritz at earthlink.net>
Subject: Re: Mouser's name for a MAT-02
Date: Sat, 13 Jan 2001 10:04:26 -0700

> A couple of us had a look at that a year or so ago.
> 
> Thing is ... you can compensate the small bulk-resistance error exactly with
> simple standard techniques, so it doesn't really seem to me that  it's worth
> the expense to buy super-low resistance units.

Thing is, most expo-converters does not compensate for the bulk resistance.

I haven't dug into the details of bulk resistance compensation myself,
but maybe somebody och something will kick my lazy but to go and do
the reading and theory exercises.

Now, is there a simple mod on a standard converter?

Also, this brings up the topic, how does one matches transistors for a
expo converter as well as how does one best trim the bulk resistance
compensation?

If we where to use the ASM-1 expo converter (which also exists as a
separate schematic over at my schematic page) and discuss that one...

Cheers,
Magnus




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