My window motor and SSG replications

[F.W.A.N.O.]

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[Faraday88]

Hello, everyone.

Here are photos of my window motor and SSG replications.

[ATTACH=CONFIG]5211[/ATTACH] [ATTACH=CONFIG]5212[/ATTACH]

Sorry about the quality of the photos, not much detail, but i can arrange
a decent photosession as to include any detail and post the photos here for
anyone who might be interested - questions and comments are welcome.

The window motor uses reflective optics (CNY70) to trigger two mosfet pairs
(IRF630 / IRFI9540) in a bipolar sequential circuit.

The SSG has a timing wheel with small magnets and a reed contact triggering
a single pair of mosfets of the same kind as above.

When the rotors get up to speed, the neon indicators have a bright pink glow
(which i simply adore) and a small capacitor of a few microfarads will almost
instantly charge to about 150 volts and will get to about 250 volts in a second or two.

So far i've used them to charge (with radiant): sulfated lead acid batteries, Ni-Cd
and Ni-Mh accumulators, even non-rechargeable alkaline batteries and button
cells will accept the charge if they are not totally gone already.

Zinc-carbon cells: not really useful, possibly because of electrode depletion.

Li-ion cells: tried with a few phone batteries and they will charge but i simply don't
like these since i had one explode in my hand once - the sound and light (BANG & FLAME)
were not very dramatic, but the fumes were an instant nightmare to my eyes and lungs,
which lasted about two days, so i simply avoid them (ONE time bitten, forever shy).

Next step is the cap-pulser, i read that the simple version with SCR and zener
tends to latch-up.

Would an SCR with a higher holding current solve this?
I've watched the EFTW series videos and saw Mr. Bedini use it succesfully so
i guess there is a way to make it tick.

Otherwise i'll just build the comparator version and avoid the dilemma,
i'll have to experiment with it anyway so why not try both versions...

Ok, i think this post is getting a bit lenghty, so i'll wrap it up
with a big THANK YOU to John Bedini, Joseph Newman, Edwin Gray,
Thomas Barden, Nikola Tesla and everyone else who told us how to do it.

Respect and regards.
F.W.A.N.O.

Hi F.W.A.N.O,
First of all, Great and neat work....wonder about the functional parameters of your set up...any OU characteristics??
Rgds,
Faraday88.

[F.W.A.N.O.]

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[F.W.A.N.O.]

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[F.W.A.N.O.]

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[Faraday88]

Hi Faraday88,

that was a really quick reply, thank you for the compliments.

I haven't made a lot of measurements but i guess parameters
would include operating voltages (10 - 18 volts for both motors),
coils' DC resistance (window motor = 2.8 ohms, SSG = 3.3 ohms),
haven't measured speeds or currents (will do and post the results),
up to now i've been just playing around with the motors to see if there
is any charging effect on batteries (which there is).

Most of the time i ran the motors with a power supply paralleled with
a big electrolytic cap (6800 uF / 75 Vdc), although a battery (12V / 7 Ah)
makes them spin up quite a bit faster but i didn't want to drain it a lot.

OU properties? Unknown, never tried parallelling the charging batteries so i can't tell
if it would charge four or five of them from the one running it, i need to make the cap
pulser so i can swap the batteries and i don't own much measuring equipment
(a few universal multimeters and a Hameg frequency counter with one channel busted -
one more thing waiting for me to be fixed).

The only kind of oscilloscope so far was the "pc soundcard scope" program which i
sometimes use to test simple audio signals on equipment people bring me to fix or modify
for them (hi-fi and guitar amps and effects, microphones, mixers, turntables and so on)
and lots of other wondrous things which include forklifts, hot air tools, old tube radios,
laptops, LCD displays and small household appliances - various stuff which would
probably end up on a junkyard if i didn't fix it for dirt cheap and make the owners
happy just because they are mostly my friends.

What other parameters would you be interested in? Please let me know and i'll
(try to) measure them and post the results.

Education-wise, i'm an electronics techincian with quite some practical experience
and little interest in highly complex engineering stuff.

Employment-wise, i'm currently (for the last 12 years or so) unemployed,
or self-employed, performing the above mentioned repairs and/or modifications
and engaging in an electronic construction project from time to time
(if you wish i can post some photos of those, too, eventhough they are
not really alternative energy projects, with the exception of the Lakhovsky MWO / tesla coil
maybe - photos below - too bad i don't have the funds to make the ring antennas).

[ATTACH=CONFIG]5213[/ATTACH] [ATTACH=CONFIG]5214[/ATTACH] [ATTACH=CONFIG]5215[/ATTACH] [ATTACH=CONFIG]5216[/ATTACH]

Here's a photo of a previous version of the window motor (optics+BJTs BDX53c and 54c)

[ATTACH=CONFIG]5217[/ATTACH]

regards
f.w.a.n.o.

Hi F.W.A.N.O,

Hats off for your neat and skilled work pal!..you could make a good Ozone Generator with that unit..
Best Regards,
Faraday88.

[Faraday88]

Been reading threads about cap pulser / cap dump circuits and i wonder about
the use of forced SCR commutation (similar to coil shorting) in a cap dump circuit
or perhaps a standard comparator circuit with a GATE TURN OFF THYRISTOR in place of mosfets.

Has anyone ever tried this kind of setup?

Here's a link to onsemi's PDF about forced SCR commutation:
http://www.onsemi.com/pub_link/Collateral/AND8030-D.PDF

And here's a picture of a gate turn off thyristor drive circuit:
[ATTACH=CONFIG]5224[/ATTACH]

Could this solve the high current demands (to eliminate the need for matched mosfets and heatsinking)
and the latch-up issue that the standard SCR's exhibit in a cap dump circuit?

regards
f.w.a.n.o.

Good thought.. try it out ..remember to report it ..
Rgds,
Faraday88.

[F.W.A.N.O.]

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[F.W.A.N.O.]

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[Faraday88]

Hello Faraday88,

That unit (i suppose you mean the high voltage generator) already is a terrific ozone generator.
I use it with a big neon indicator or with a heavily insulated metal electrode to sterilize
skin cuts and scratches, for muscle pain relief and simply for energizing my body when i don't
feel all that well.

At lower power settings it creates a fine UV plasma curtain between the electrode
and skin and the ozone smell on the skin will persist for hours.

The schematic is about the same as the one on page 40 of "The Lakhovsky Multiwave Oscillator Handbook"
(1994, fourth revised edition), only with a few differences: a car ignition coil in place of the flyback
transformer, a HV diode from ignition coil secondary to HV capacitor and the spark gap is placed on the low side
of the tesla coil primary (a bit like the low side switching in the SG circuits and cap pulsers).

About the gate turn off thyristor (GTO) - i tried the cap pulser with a conventional SCR and zener and
it starts conducting before the cap is fully charged unless i slow down the rotor with my hand, so when
the rotor is slow enough, the pulser will do the job.

Literature suggests that the pulses from my motors could be too fast, so, in that regard (dV/dT runaway),
a GTO could behave just the same as an ordinary SCR and may be better suited for the bicycle wheel SG
or other large diameter and/or slower pulsing motors.

By the way, these are my first experiments with cap pulsing, and since i don't have any GTOs handy, i was about to order some off ebay:

http://www.ebay.co.uk/itm/4x-Philips...AAAOSws4JW7sTV

(10 amps continuous, 50 amps anode controllable, 100 amps non-repetitive peak current - these seemed affordable, otherwise
GTOs tend to be quite massive and expensive units), but after the above mentioned test i ended up ordering a batch of IRFP260
mosfets so i can build the mosfet/comparator cap pulser - with that one the pulse speed won't matter.

Another thing about GTOs is very low gain so heavy mosfets or BJTs would probably be a need to switch the gate properly
at large current spikes from the capacitor and, besides that, i don't know if the use of a GTO with a fast pulsing motor
would solve the dV/dT runaway, but if anyone reading these posts has a GTO handy and is willing to try it in a cap pulser,
i would, of course, also be very glad to hear about the results (especially when used with fast pulses from a motor/energizer).

Thank you for the feedback, i will put more photos in an album, sorry i won't be trying the GTO at this time,
i may be wrong but i feel like the mosfet pulser may be more suitable to my motors.

Regards,
f.w.a.n.o.

Hi F.W.A.N.O,

Ozone with High-Frequency High-Voltage is synonymous..a bit Clairvoyant as well..it brings Tesla back in Time!!! a dozen of more Experiments to try out.. bubbling Olive Oil with Ozone has medicinal effects.. the after smell of Ozone... improves memory and creates reminiscence of forgotten times..more of a Paranormal nature...Sorry that's all my personal beliefs.. anyways great to here from you on trials using the GTO device.. as you rightly said..MOSFETs and IGBTs would be preferred over this..
Rgds,
Faraday88.

[F.W.A.N.O.]

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[F.W.A.N.O.]

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[F.W.A.N.O.]

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[Faraday88]

photos (not so good) of the (yet unfinished) cap pulser - i know i'm not a speed champion, but
here it is, hope to finish and test it very soon.

[ATTACH=CONFIG]5454[/ATTACH]
[ATTACH=CONFIG]5455[/ATTACH]
[ATTACH=CONFIG]5456[/ATTACH]

regards,
f.w.a.n.o.

Hi f.w.a.n.o,

Good work as always! Remember....'Anything in haste will rest in waste.... Anything that is too slow will blow with out glow'' the second one implies to me I have learnt that of late.. so keep up the right pace which you are already at and leave the rest to fate''
Rgds,
Faraday88.

[F.W.A.N.O.]

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