On Sat, 19 Dec 2009 00:41:34 -0600, "Tim Williams"
wrote:
"Jim Thompson" /Snicker
wrote in message ...
You need to spend some time refining your circuit analysis/design
tools.
Don't give up your day job ;-)
Tools? What, did you actually think I'd waste a simulation on your silly
ideas? ;-)
"Silly ideas"? That circuit in I/C form, more than thirty years ago,
was in several different automotive ignitions.... used to time dwell.
In I/C form the ramp started essentially from zero (I could scale
transistor areas). In I/C form it was triggerable rather than
continuous, thus no R2, Q3, Q6.
That was a circuit I remembered, wanted to use again, pulled it from
archive, then couldn't figure out how it worked ;-) Stewing over it,
finally it dawned, so I made it up as a teaser to see if anyone could
figure it out. So far only one person :-(
BTW, my "day job" is doing well: I've already sold a number of induction
heater kits. :-) See the latest update on my website.
Tim
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice
480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at
http://www.analog-innovations.com | 1962 |
Help save the environment!
Please dispose of socialism properly!