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From: Tony Williams
Subject: Re: An interesting little prob.
Date: Thu, 31 Oct 2002 16:43:54 +0000 (GMT)
References: <email@example.com> <firstname.lastname@example.org> <email@example.com>
NNTP-Posting-Date: Thu, 31 Oct 2002 16:52:15 +0000 (UTC)
User-Agent: Pluto/1.14i (RISC-OS/3.60)
In article ,
Ken Smith wrote:
> I suggest the change I've made. This reduces the swing on the
> output of the op-amp. With a resistor running between the E
> and B of the second transistor, the op-amp has to swing by more
> than a volt to go from no-current to full-current. With the
> resistor moved as shown, about 300mV should be enough.
> +---[R]-----+--+ +---- | | _|_ _|_
> | | \_/ \_/
> | | | |
> | | +----+
> | | |
> | [R] |/e
> +--||--+ --+---|pnp
> | ?| | |\
> -Vdac+-[R]-+--|-\|| |/e |
> | >+-[?]--|pnp |
> Ana 0v------|+/| |\ |
> | | |
> ? ? +
Ok thanks. I'll keep that in mind.
> (I'm not looking at the tip-36's specs right now)
It's a whopper, specially made for Brick Outhousers.
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