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Post by Gary Lecomte on Nov 16, 2008 11:06:06 GMT -8
Brent, If you set it That High, You will be OK.
In my Truck, I have it set for about 11 Volts shutdown, with a 5 Amp load on my Propane furnace. ** I am almost always running my furnace Without Running my truck.
When it shuts off, it still gives me enough battery power to start my truck.
See My Point?
In Your Situation with the vehicle running (Unless your Alternator Fails) Why do you need a shutoff like this? And without your vehicle running, you will drop below 13.1volts VERY QUICKLY.
Gary
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Post by Gary Lecomte on Nov 15, 2008 7:02:17 GMT -8
Wes - Male - Fullerton, Ca USA I read it all! Welcome Wes! Enjoy.
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Post by Gary Lecomte on Nov 14, 2008 7:28:14 GMT -8
UPDATE:
There were 407 members, Now there are 101 members. These persons have posted.
(Because of this mass email I sent out, some have responded by posting a simple message.) Thanks to those persons.
I also recieved numerous emails, saying to delete them, but no response from many others. Possibly there email address is no longer in existance.
I am now going to put a notice on this home page, Saying you must post at least once, if you want to stay as a member.
Take care...Gary
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Post by Gary Lecomte on Nov 13, 2008 7:51:27 GMT -8
Gary! I found a good source of inexpensive trigger transformers if you are interested. Email and I will provide you with the link Presently, I now have some of these trigger Coils But Might be good for Future Needs. Just email me the link to: chemelec@hotmail.com You MUST put the Word "Electronic" In the Subject Line.
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Post by Gary Lecomte on Nov 13, 2008 7:46:22 GMT -8
A friend of mine gave me an old VTVM. It needs a new rectifier tube and capacitors but otherwise is good. Since the input resistance on a VTVM is considered infinite ohms, would it be getter to use it instead? It is NOT Infinite Input Resistance! The Input goes to a Resistance Divider Network. I Have a Hewett Packard VTVM, That I use for Certan High Voltage Measurement, as it Far Less succeptable to Damage.
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Post by Gary Lecomte on Nov 12, 2008 14:14:00 GMT -8
Your Inverter (Or Any Load) Goes between the Battery Positive and the Drain of the Mosfet. The Mosfet Should be HEAT SINKED with a suitable sized one.
For the Inverter, I would also recommend a 10,000uf Cap across its Positive and Negative. As It creates High Switching Currents.
And Depending on the Wattage of your Inverter, That IRFZ44N Mosfet may not be suitable.
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Post by Gary Lecomte on Nov 11, 2008 10:23:38 GMT -8
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Post by Gary Lecomte on Nov 10, 2008 19:27:28 GMT -8
First you need to determine the Ohm per volt rating of your DVM.
If you don't have the manual, Look it up on the internet.
Or better yet, put it on the DC Voltage Range and using another DVM, Measure the Resistance from the probes.
I have a Fluke 87, True RMS meter. But mostly I use a Fluke 73 for general measurements, and According to one manual, its 10 Meg, According to another, its 11 Meg, But measuring it, its 11.2 Meg. With my Method of determining these High Value resistors, It is Important to have an Accurate reading of this probe resistance.
Let me know.....Gary
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Post by Gary Lecomte on Nov 10, 2008 19:13:20 GMT -8
Most detector coils are just Scramble wound.
Your Idea of using foil becomes a problem on PI Detectors. You need a VERY LARGE Coil to get a Reasonable Inductance value.
PCB Coils are made that way for IB (VLF) Detectors, But they are Not very suitable for PI Detectors.
Personally I find my Flat wound coil to be better.
And If your Not Knowledgeable about metal detectors, I do NOT Recommend you make the Pulse-2. If it is Not Adjusted correctly, it won't work well at all.
So Just make the Pulse-1.
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Post by Gary Lecomte on Nov 10, 2008 19:05:24 GMT -8
i tried this electro gun ........it was superb.... this circuit results in a 500amp pulse which can even project heavy metal objects..... .........ask me for the workin video of this gun... Could be also a Deadly Shock, depending on the voltage.
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Post by Gary Lecomte on Nov 10, 2008 8:37:11 GMT -8
Well if nothing else, It seems My Mass Email, "Woke up a lot of people".
I think this is a Good Forum.
Have Fun, All of you.
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Post by Gary Lecomte on Nov 10, 2008 8:31:30 GMT -8
Is there a significant difference between stranded copper wire and stranded copper wire that is tinned as far as relative resistance? No, They should be about the Same. I Believe the actual copper on both is the Same Diameter. And the very Thin, Tin Coating is probably not enough to make any real difference in the overall resistance.
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Post by Gary Lecomte on Nov 10, 2008 8:24:56 GMT -8
How do I go about measuring gigaohm+ resistances with a conventional VOM? Possibly I can give you a Simple Circuit to do this. But First I need to Know: 1) Is your meter a Digital VOM, Or an Analoge VOM? 2) Do you Know the "Ohm per Volt" Rating on your Meter? 3) Do you have a Stable, Voltage Power Supply? (100 Volts would be Good, But somewhat lower may also work.) Gary
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Post by Gary Lecomte on Nov 10, 2008 8:16:19 GMT -8
hello, I have been working with a dry cell for over a little over 1 month now, i have built the Pulse width Modulator that I have picked out from the electronic projects from Chemelect. I would have to say it works Awesome!!! The Duty, Limit and Freq, work great, and all can be noticed with a simple light bulb. Though i had a hell of time trying to get it to work the first time, but once I did, it did wonders for my Cell and my cars Battery (Amps) and production of HHO. Anyways, if anyone is wondering what is the best Mosfets to to use on their projects, i would have to say to do your homework on what is best for what you are using it for. First of all (if it is going to be used in a car using an electrolyzer) i don't think you need anything over 30 AMPS but i would have to say a 50 amp wouldn't hurt to install. If anyone is having a hard time getting a PWM going, I can give out a hand ...Gosh i can even just give you the Express PCB Layout that i made myself from CHEMELEC Projects also FROM AKA ( ZeroFossilfuel..www.alt-nrg.org). Well anyways if anyone is interested i am just an email away. Thank gbetromero@hotmail.com My "Ultimate PWM" will be available Shortly, And is Much better than that design.
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Post by Gary Lecomte on Nov 9, 2008 17:46:09 GMT -8
Thanks Gary, But you know what I would really like? A concise table of standard resistor and capacitor values. I do a lot of spice simulations and I have to go back and forth between my computer and my parts bin to make sure I don't specify a component that does not exist. There must be a table that shows standard values without a decade multiplier. For instance if 2.2 ohms is a resistor, then you know there must be 220, 2200, 2.2 meg , etc. rmeyn Do you mean Standard, As in: 20% Tollerance, 10% Tollerance, 5% tollerance, 1% Tollerance, or a .1% tollerance. Edited, Because I SCREWED UP! Each one of these have Different Standard values. To Further complicate the Issue, not all manufactures follow standards. 0 ohms is also a Standard 1/4 watt, 5% resistor. (Yes Zero Ohms.) I Stock them also.
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