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Author Topic: Output Coils  (Read 11911 times)

Offline MileHigh

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Re: Output Coils
« Reply #15 on: March 03, 2015, 08:03:07 PM »
wow, I have been reading up about current sources. I think I kind of get it. But if one uses the output combined with a capacitor to power a light bulb rather than charge a battery, what would the voltage source be? or am I simply not understanding it?

Thanks for all the info everyone, its all very interesting .

Forget about the capacitor in your example to keep it simple.  If you have a current source of one ampere, and the filament of the light bulb is 50 ohms, then the current through the light bulb will be one ampere and the voltage across the light bulb will be 50 volts.

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Re: Output Coils
« Reply #15 on: March 03, 2015, 08:03:07 PM »

Offline Low-Q

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Re: Output Coils
« Reply #16 on: March 03, 2015, 09:05:43 PM »
Thank you. Now I have a starting point. Im guessing I wont know what voltage I will get until i start experimenting? I need a circuit to change the voltage down to 12v. Any ideas?
What is feeding the coil with alternating magnetism?
Is the alternating magnetic input constant or not?


If you want to transform the output voltage down to 12 V you must know that the coil produce more than 12 V. How do you know that?
The number of windings doesn't determine the output voltage alone.

If the output is greater than 12V you can use a regular transformer to transform it down to 12V.
Just have in mind that rectified 12V AC will give you about 17V DC.


You can use a cheap buck converter to transform 17VDC down to 12VDC. Type "buck converter" in the search field at www.dx.com. Many models to choose from.

Vidar


Offline Jimboot

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Re: Output Coils
« Reply #17 on: March 03, 2015, 09:17:57 PM »
Why have you been doing this test? 


Because I wanted to

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Re: Output Coils
« Reply #17 on: March 03, 2015, 09:17:57 PM »
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Offline MileHigh

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Re: Output Coils
« Reply #18 on: March 03, 2015, 09:28:48 PM »
Because I wanted to

Okay, so you didn't really know why you were doing the test and you were just doing it by rote.

Most people know that you don't put your multimeter on current measurement and then connect the probes across a voltage source because that can blow the multimeter.

By the same token, you don't put your multimeter on voltage measurement and then connect the probes in series with a current source (a discharging inductor) because that can blow the multimeter.

Offline Jimboot

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Re: Output Coils
« Reply #19 on: March 03, 2015, 10:29:46 PM »
Okay, so you didn't really know why you were doing the test and you were just doing it by rote.

Most people know that you don't put your multimeter on current measurement and then connect the probes across a voltage source because that can blow the multimeter.


You're funny

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Re: Output Coils
« Reply #19 on: March 03, 2015, 10:29:46 PM »
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Offline MileHigh

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Re: Output Coils
« Reply #20 on: March 03, 2015, 11:25:13 PM »
You're funny

Well, you're a joke.  You gave somebody bad advice and you were corrected.  It's even potentially physically dangerous advice if a coil were to discharge into one hand, go through your heart, and then into your other hand that is at ground potential.  You try to do the "big lecture" about maturity in past discussions, and yet your two responses to me are immature and typical of a ten-year-old.  The irony.

Offline Jimboot

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Re: Output Coils
« Reply #21 on: March 03, 2015, 11:32:09 PM »
Well, you're a joke.  You gave somebody bad advice and you were corrected.  It's even potentially physically dangerous advice if a coil were to discharge into one hand, go through your heart, and then into your other hand that is at ground potential.  You try to do the "big lecture" about maturity in past discussions, and yet your two responses to me are immature and typical of a ten-year-old.  The irony.
The sky is blue

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Re: Output Coils
« Reply #21 on: March 03, 2015, 11:32:09 PM »
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Offline MileHigh

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Re: Output Coils
« Reply #22 on: March 03, 2015, 11:40:12 PM »

Offline Jimboot

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Re: Output Coils
« Reply #23 on: March 04, 2015, 12:01:31 AM »
Well at least you have a sense of humour :)

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Re: Output Coils
« Reply #23 on: March 04, 2015, 12:01:31 AM »
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Offline synchro1

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Re: Output Coils
« Reply #24 on: March 04, 2015, 01:21:25 AM »
Well, you're a joke.  You gave somebody bad advice and you were corrected.  It's even potentially physically dangerous advice if a coil were to discharge into one hand, go through your heart, and then into your other hand that is at ground potential.  You try to do the "big lecture" about maturity in past discussions, and yet your two responses to me are immature and typical of a ten-year-old.  The irony.

An 80 Ohm coil that's outputting 40 milli amps at 28 volts does not present an electrocution threat.

Offline MileHigh

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Re: Output Coils
« Reply #25 on: March 04, 2015, 02:39:48 AM »
I never stated anything about the specifics of any coil with respect to the size of the coil, the resistance of the wire, or the initial current flow when disconnected.

Just do the research:

https://www.google.ca/#q=how+much+current+can+kill+you

>>>>>>>>>>>>>>>>>>
For example, 1/10 of an ampere (amp) of electricity going through the body for just 2 seconds is enough to cause death. The amount of internal current a person can withstand and still be able to control the muscles of the arm and hand can be less than 10 milliamperes (milliamps or mA).
----
A domestic power supply voltage (110 or 230 V), 50 or 60 Hz alternating current (AC) through the chest for a fraction of a second may induce ventricular fibrillation at currents as low as 30 mA.[6] With direct current (DC), 300 to 500 mA is required.[7] If the current has a direct pathway to the heart (e.g., via a cardiac catheter or other kind of electrode), a much lower current of less than 1 mA (AC or DC) can cause fibrillation. If not immediately treated by defibrillation, fibrillation is usually lethal because all of the heart muscle cells move independently instead of in the coordinated pulses needed to pump blood and maintain circulation. Above 200 mA, muscle contractions are so strong that the heart muscles cannot move at all, but these conditions prevent fibrillation.
<<<<<<<<<<<<<<<<

Just like a discharging coil, which is an unstoppable current source, will force current into a badly sulfated battery, a discharging coil will force current through the human body.

For someone that does not know what they are doing, making a near-useless measurement of the voltage generated by a coil in a typical Bedini-type setup with no charging battery in place could be lethal.

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Re: Output Coils
« Reply #25 on: March 04, 2015, 02:39:48 AM »
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Offline synchro1

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Re: Output Coils
« Reply #26 on: March 04, 2015, 03:32:22 AM »
@Milehigh,

Quote from Milehigh,

"For someone that does not know what they are doing, making a near-useless measurement of the voltage generated by a coil in a typical Bedini-type setup with no charging battery in place could be lethal".

It would take a nice size 10 coiler Bedini to kill someone with BEMF. The Adams Motor only has four tiny magnets on the small rotor spinning at a few hundred R.P.M. The output's to Little to even light a small bulb

All it would take to avoid "discomfort" would be to attach the DMM electrodes with "Clip Wires" to the coil leads before starting.

Tinman was knocked cold for 10 minutes by a washing machine motor he tested as a generator. He stated it was a bad idea to hold opposite electrodes in both hands! I can confirm that!

Offline Jimboot

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Re: Output Coils
« Reply #27 on: March 04, 2015, 04:49:01 AM »
Actually whilst we're at it, don't stick a metal fork into the toaster


Offline Pirate88179

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Re: Output Coils
« Reply #28 on: March 04, 2015, 05:28:17 AM »
Actually whilst we're at it, don't stick a metal fork into the toaster

Is it OK to use a butter knife?  (Actually, it isn't...ask me how I know, ha ha)

Bill

Offline Jimboot

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Re: Output Coils
« Reply #29 on: March 04, 2015, 06:16:03 AM »
Is it OK to use a butter knife?  (Actually, it isn't...ask me how I know, ha ha)

Bill
I'll go and conduct the experiment and get back to you.

 

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