Ready made PWM from a battery drill.

[Itsmeeman1]

@Me102288 How can a power supply and light switch pulse the flow of electricity? That's the point of the PWM. Pls explain.

[Ace011mm]

why battery drill when I can buy or made pwm? I try this battery pwm,and I cant control amps. Water heating and increase amps... meby I something do wrong?

[m3sca1]

@Ace011mm this drill PWM is the cheapest souce of PWM-thats the point.

increasing amps and heat will occur with most pulse sources,specially if you run it full throttle.

try an electric scooter PWM and buy it second hand-that will let you keep cost down and run it with low throttle.that should slow heating.

shorter pulses =less heat,but also less gas.

the freqency needs to resonate with the cell,so ultimately changing freq to match cell is best.

[Ace011mm]

@m3sca1 Thanx! But I can made simple pwm with 556 timer for 10 euro or Meyers pwm for 20 euro or buy battery drill pwm separated for 5 euros. New battery drill cost about 20 euro,cheapest one in my country! I have one old and use pwm but in full throttle dont work,and in low throttle work but so much heating and I stop! I cant understand why,pwm is for 12 amps and I run just 8 amps straight DC?

[Me102288]

@m3sca1 I used I lght dimmer switch, works great for $10

[m3sca1]

@Me102288 another good idea,when people are getting sucked into buying expensive units,there are always cheap alternatives...can also pool chlorinator control and also electric scooter pwm.

[Me102288]

@m3sca1 ya, I was looking for a 12volt 30amp adjustablle power supply, turns out they're like $300 to $700 :-\ so I made one from a pc atx power supply and a light dimmer.. works perfect for what I need it for (hydrgon generator) worked great, after I got a circuitr breaker and ampmeter the whole thing was less then $30 for the same 30amp at 12volts (dc) woohoo? lol

[man9170]

it is a crap drill

[m3sca1]

cheapest on the market!

[kurtman68]

Ah, the irony - had to use the pocketknife to remove the screws on the drill. I guess you should have purchased 2 drills. I'll look for a study of the economies of scale whereby the investment of 2 drills initially, is eventually offset when you complete the "n"th PWM device.

[1foxtrot70]

I have often marveled at what the world would be like had the Swiss not invented their marvelous knife. Hats off to the Swiss!

[commando7144]

i seen a video of an industrial browns gas torch used in heating radioactive wastes and reduced the reading to a safe level.i see it as a great replacement for acytelene in burn tables also.

[Laksetroll92]

This is stupid, why would you waste a perfectly good drill for something you can design for very cheaply and with much more functionality?

[m3sca1]

your entitled to your opinion.

the drill was cheaper than buying the parts for even a rudimentry PWM and i have done other things with the robust trigger.

its an easy means to an end.

also old electric scooters have a similar but bigger PWM with throttle control.

btw the brand of drill was the cheapest on the market,and as such would not last very long in service as a drill

;]

[x65535x]

In that case why are you wasting money?

If you didn't understand my comment what I mean for you to realize is that all this HHO stuff is complete BS. It's not opinion it's fact. The amount of energy required to split water molecules through electrolysis is much larger than the amount of energy you can get from recombining the H2 and O2 molecules. Go look up some thermodynamics and enthalpy of different atoms, molecules and chemical reactions.

[m3sca1]

missed the point that i had alot of fun experimenting-some ppl dont get it.

they hydroxy flame is fun to play with,and i may well have saved ppl from wasting money on well overpirced PWM's that are being sold online.

we know that it takes more energy to split water-thats why we are tinkering on this stuff-to improve it.

[x65535x]

I'll give you that. Fire is fun. A hydrogen flame is a lot of fun. No gas requirements just water with an ionic compound in solution with some electricity and you get a flammable gas. Actually in an explosive mixture as well.

It's fun but won't be a viable energy source.

The one thin is. It's physically impossible to change the energy required to change enthalpy and all that fun stuff.

While some laws of physics will be broken the energy of chemical reactions probably won't be one.

[m3sca1]

yes im still waiting to see if the energy density can be increased with such things as mentioned my meyer like electron extraction methods-but yeah as it stands -it doesnt have the energy density to run a conventional ICE motor at full power

[Blodslav]

@x65535x Electrolysis IS a very inefficient process, but I think you fail to see the possibilities this can bring in the future. With water being the second most common molecular compound in the universe, It is readily available. Electrolysis does not only produce fuel, but oxygen as well. I'm not sure, but I think it's quite possible that when compressed hydrogen has energy densities way above most batteries, also note that hydrogens spectacular reaction rate is a plus.

[Blodslav]

@x65535x Just took the liberty of looking up the energy density for hydrogen (it's 143 MJ/Kg, in contrast to lithium-based batteries: 1-2Mj/Kg) Even though it takes more energy to refine than it produces, hydrogen is usefull for A) applications where a massive expenditure of energy is required (launching a shuttle into orbit) B) Applications where low weight and volume are required (vehicles, interplanetary shuttles), C) In cases where generating solar energy is insufficient.

[birdyboyblue]

@x65535x Yes, in an 'open' system (where the power for the electrolysis is coming from some outer source, then the HHO generation may not be efficient or viable at all. But in a 'closed' application, like in a vehicle, where the power source is getting replenished by the alternator anyways (and therefore the power is essentially free), an HHO system does increase the efficiency of the gas combustion and thereby less gas usage and better emmissions.

[x65535x]

@birdyboyblue

The power isn't "free" the more current you draw from the alternator the more load you put on the engine. More load means higher fuel requirements. No, the hydrogen and oxygen from the water DON'T improve combustion. You lose efficiency in the whole system.

Considering most IC engines in cars are around 35% efficient in converting fuel to power (before drive train losses and other forces.) You're lowering efficiency.

[birdyboyblue]

@x65535x Sure, if one tries to go for too much and draws the limit of the alternator, say 60 amps, then they'll probably have some trouble; but I've got small unit delivering about 1.5 to 2 LPM and drawing 25 to 27 amps in a 2000 Ford Ranger for the last 6 months. Before it I got about 16 MPG and since I've had it about 24 MPG. So it does work.

[Tex4u]

Maybe you should buy two. Keep one to take the other apart.

[HierPower]

lol

[maxpower7171]

i took one out of a drill i had, and when i hooked it up to a 12V jumper box, it melted the wires....

[m3sca1]

thats too bad

was it shorting out somewhere,reverse polarity or were running it thru a cell with a shitload of electrolyte?

[mike081283]

im wondering if a raido would work mabye were the speakers hook up case u can tune it

[m3sca1]

anythings worth a try-maybe hook it up to the tank circuit-where the coil and capacitor are getting friendly,and run thru the dial.

dont think you would get much at the speakers.

[scottwstew]

damn man what are you superman, that was some fast workin there taking that drill apart. but great idea im gonna do the same. feel bad for the new drill though. good work git r done...

[cheaphardwarez]

That really is pretty damn clever. Now, IM going to add a couple resistors and a 200 amp mosfet to the output so I can really crank it!

[m3sca1]

cool-you doin a HHO cell?

i like your plasma cutter btw=]

[cheaphardwarez]

Yep, I have done a few HHO cells

[m3sca1]

for cyberscann54 and waynedavisband-

if you google -variable speed switches for cordless tools-

you will see it is in fact a simple PWM

[m3sca1]

ok this is what i found on a quick google search-for "PWM motor speed controller battery drill"

DC motor speed controls (as used in cordless drills and the like) are most commonly a relatively low frequency PWM.

i was pretty sure its a simple PWM,now im wondering,so im going to test/check it with speaker on the output.I figure if it hums then its pulsing.

I dont have a scope to put it on,unfortunately

[m3sca1]

Hooked it up to speaker and it squeals a tone,that sounds like a square wave,or maybe saw tooth-it has what looks like a power FET hanging out the side,although there are no numbers on the transistor to check that.

I am thinking maybe with a large resistance on the output ,i could use my sound card to sample the waveform,so that i can look at it.

Any thoughts on that?

[cyberscann54]

not a PWM just a current regulator DC drill no pulse just straight current with a variable resistor to adjust the current PWM (Pulse Width Modulator)_-_-_--__--__--___--­-___---ex. your drill ____________________ PWM's are real easy to make.I will make a video of a few simple PWM's and some circuits that use them and will even upload the schematics to my website. Check my Page for link

[m3sca1]

im currently making the dave lawton PWM.

[crob227]

Dude what are they saying,,,,,, it has to have some kind of pulse or my setup wouldnt work, rite? if it was constant than a mot would be useless cause it works on the pulse of the trigger.

[crob227]

it has to be making some kind of pulse or else i couldnt run a microwave oven transformer off of it.

[cyberscann54]

ok I retract my statement but it is not cost effective and has a very limited frequency range

[m3sca1]

yeah its limited in range and only adjusts the pulse width at around 3.5kHz.

but the robust construction of these things let me try many things and got great gas production with less heat on a cell.

as for cost effective it was cheaper than the parts for the lawton circuit or the PWM motor speed controller i built,worked better and i got a battery,charger,drill chuck,and motor,in the bargain.

also the trigger is ready made for throttle like applications,with its squeeze trigger.

[nickgc123]

I wanted to use this in my car. But I cant hold the trigger while I drive so is it possible to change the trigger for a knob instead.

Great work Nick

[m3sca1]

why dont you pu the trigger under your accelorator pedal?

or attach it to your throttle under the hood.

would be easier than trying to find a similar rated potentiometer knob,which you want to turn as throttle increases anyway,so you may as well stick with the slide trigger.

[waynedavisband]

not a pwm my friend no pulse just adjustable current through a switching transistor but now atleast you have a means of adjusting current but there again no pulse from the output to the motor just current adjust steady on flow

[crob227]

To prove pulse look at my stumble onto pt1-4,

If the trigger didnt supply a pulse then my transformer i made wouldnt generate any voltage. because the trigger creates an on/off magnetic field in the bifilar coil...please comment back everyone should know this cheap and reliable (25amps) trigger.

[babyella07]

McGyver strikes again. Nice 1 dude.

[crob227]

you gonna use that motor? bet it can generate massive current with the rite mods, if you can take it apart without damaging the the armature you can rewind it with heavier or lighter gauge wire depending on the voltage per rpm you want. also you can get neo mags shaped like the ones from the motor. If the drill is good it will also have bearing for the shaft which is a big plus.

[fingers1572]

the innerds of a batterybrill EH?

good info

thanks

[Vincentstrader]

you have some mad skills with a pocket knife mate

[m3sca1]

lol =]

nearly chopped my fingers off 5 times