To be precise Dave attached to his post in:

http://groups.yahoo.com/group/alt-beam/message/8362

the schematic of the original Miller Engines which he described as:

"Originally designed by Andrew Miller in 1995, this Solarengine design has
been distilled to this most optimum layout".

This was followed by my circuit analysis in:

http://groups.yahoo.com/group/alt-beam/message/8385

in particular pointing out the circuit analysis and the merit of the MLVSE
design which used a resistor in the 1381 ground pin.

Pity that I did not see the obvious improvement of using a diode instead of
the resistor at that time.

Anyway my small contribution was acknowledged in:

http://groups.yahoo.com/group/alt-beam/message/8392

and some short time later (when?) Miller replaced the resistor in MLVSE
design with a diode which optimized the circuit behavior for a bipolar
output transistor. IMHO this version of the Miller Engine is (still) the
simplest and best SE design today.

wilf



-----Original Message-----
From: Dave Hrynkiw
To: beam@yahoogroups.com
Sent: 3/12/02 4:16 PM
Subject: Re: [beam] Miller SE origin?

At 02:54 PM 12/03/2002, laminar gerbil wrote:
>1381 solar engines were the standard. The "Miller" SE seems to have
>popped up within the last year, I think. Is this Ian's idea too and is
he
>still around somewhere?

This was Andrew Miller's circuit, which came about from his playing
around
with the then-new 1381 voltage detectors. Since then, Solarbotics
acquired
the rights to it from him, and we published the circuit and tutorials.

BTW, Ian is in college now, busy doing book-lernin'...

Regards,
Dave
---------------------------------------------------------------
"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
2 vowels. Pronounciation? _SMITH_".
http://www.solarbotics.com



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