Fred Bloggs said:
Let me see- I stated the OP was a troll, and challenged he/she/it to
expand the details of the question- and you call this bullying?!! HERE'S
THE DEAL- YOU, AUBREY McINTOSH- ARE A FRIGGIN MORON- YOU'RE ANOTHER PoS
WHO HAS ******NOTHING******** TO CONTRIBUTE- A BORING AND IGNORANT
ASPIRING ACADEMIC AND WELFARE RECIPIENT. TAKE YOUR TOTAL CRAP ABOUT
FRESH MINDS- WHICH YOU KNOW ***ABSOLUTELY NOTHING ABOUT*** AND GO TO
HELL!!! TOTAL FAKE AND WORTHLESS PARASITE THAT YOU ARE!!!!!!!!
Aren't you the mental midget working on that hex-inverter switching
regulator?- zzzzzzzzzzz- what a joke- but there's apparently no project
too small for an pseudo-intellectual.....Oh yeah, and get a job before
you call yourself a chemist, just having a degree from a diploma mill
doesn't qualify you for the title.
Did you want to make a post that shows you aren't a bully, and brings
the rest of us to value your postings?
Yeah, I built Goder's circuit. Took a photo. Lit some white LEDs
with it. Measured how long it ran from a NiMH battery pack. Ran some
SwitcherCAD simulations on it. Asked for some transistor .model
statements from the wisdom of the group. Twice. Failed to get them,
sad, but didn't stomp. Modified it to a SEPIC geometry. Made an
EAGLE file for it. Had fun, took it apart. Wonder how much it would
cost to have Jim put it on one chip. Leaving the experience alone to
incubate. Noticed downloads in the web logs, felt encouraged to post
again. Hobby stuff. Design, yes; professional livelihood, no. While
you're here, you should try it.
Don't think I spit or cussed. Thought I got in Jim's kill file:
elementary, boring amateur, doesn't do closed form analysis, can't
type URL. Can't tell. Sad. Tried to do perterbation approach to
analyse on Sepic, voltage source in one cycle, current source in
another. Hope it leads back to convergent infinite series solution.
No fun, no customer, no conclusion, quit. Don't remember anyone
telling the group they'd leave forever.
Meant to go to Win's transistor LED driver next. Haven't, got
sidetracked by the recent low voltage driver. Will see if it will
drive 10 Kingbright white LEDs. I really like these white LEDs.
Going to run a string down the hall. Won't be nearly as classy as the
all LED apartment on the PICLIST. Found the data sheet on these 1W
monsters, haven't found part numbers of them at Mouser. Don't want to
ask yet. Will lurk, see if it shows up.
Did do a simulation of the recent low voltage white LED driver.
Really objected to current waveform, wanted ripple free. Won't get
involved in pulsed LED brightness thread. Monster LED data sheets say
don't, really really don't deviate from recommended current, use PWM
instead. Going for low ripple.
Put the same 10 pack of LEDs on it. Ran the simulation with .step V1
oct 1.5 24 2. Found trouble at higher voltage. Moved the capacitor
charge transistor from V+ to the collector. Got more stability. Ye
ha, but quiet, so's not to disturb the cat. Did mindless simplex
style optimization on passives. Can get about 20 V, 5mA from 1.5V
input. But the regulation is set for 10mA. Not happy. Put a
transistor in the current control loop: top of current sense feeds
base of Q3 through 200K, collector limited by 43K to V+. Also put V+
to base through 3.6Meg to help stabilize at high V+ values. Took some
LEDs off, see if regulates. Much, much better now, but not finished.
Most recent mod:
http://www.jump.net/~vima/led/led_drive_bias_021.asc
Didn't announce to group, nothing worthy yet. Don't have theory,
just doodling again. Finally remembered LaPlace's name. Can't
remember how to do transform. There are company executives that were
born after the last LaPlacian I worked. Can't remember how to set up
R,C values in filter, just used big ones. Probably the reason it
hiccups at high supply. Can't find in AoE, thought it was there. May
write to .Wav file, see if it will emulate summer lawnmower sound ---
rrr rrr RRR bll bll rrr rrr RRR bll ...
Will put SEPIC geometry in place Real Soon Now.
Put aside. Thought I should make a simple 1 or 2 transistor
relaxation oscillator to understand. Set currents in the 10s of micro
amps. Really strange simulation results. Can't do it. Astonished.
Maybe just too late at night.
....
Seems more on charter than speculation about my welfare status. I
have fun. Make occasional friends. Learn some new things.
You could too: type different messages.
