Posted by Jim Wilkins on May 25, 2012, 11:59 am
> Jim Wilkins wrote:
>> ...> Who uses resistive loads any more?
> Us 'home experimenters' do.
>>
http://www.newark.com/agilent-technologies/n3300a/dc-electronic-load-mainframe-1/dp/95H8001?in_merch=true&MER=FP_N_L5_Agilent_None
> Snazzy, but beyond the budget for sheer amateurs.
> Like yours truly. :)
> --Winston
Me too, actually.
I checked out the auto-air adapter with a rats nest of these
http://sigma.octopart.com/8900891/image/Ohmite-RJS6R0.jpg
before risking the laptop.
When I was testing electric vehicle and medical equipment batteries I
had the high-buck test setups. I don't need to be that accurate at
home.
jsw
Posted by mike on May 25, 2012, 1:05 am
On 5/24/2012 3:47 PM, Jim Wilkins wrote:
>> ...
>> I'm amazed by the number of people who spend years and post
>> videos for free energy devices without ever measuring anything.
>> And the few that have a meter, don't measure energy.
>>
>> There oughta be a how-to guide for measuring power/energy,
>> but I'm too lazy to go look for it...but it'd probably cause
>> youtube to implode on itself.
> I used a $0,000 digitizing oscilloscope and $000 DC current probe,
> and let the scope's math processor do the piecewise integration of
> stored samples.
> If you are on a home-experimenter budget with old surplus equipment,
> accurate AC power measurement is quite a challenge.
My point is that it IS NOT difficult at all.
IN the US, there's a wattmeter at the utility entrance.
OR
A $0 KillAWatt meter will do pretty well for AC powered stuff.
You can measure output power with a resistor, thermometer, stopwatch
and a pound of water.
The good news is that you don't need high accuracy at all.
Free energy does not obey the known laws of physics.
It's everywhere and in infinite supply, waiting to be tapped.
Any free energy device worth having will put out WAY, WAY
more power than you put in. It will be very obvious that it is working.
I think that's the crux of the problem. There probably have
been many successful free energy devices. They just worked so well
that they destroyed themselves, the inventor and any evidence that they
ever existed.
I believe that a supernova are the results of successful free energy
devices developed elsewhere in the universe. We've been lucky so far.
> Current measuring shunts like this can sometimes be found cheap in
> surplus stores, but not around here because I snap them up.
> http://www.emarineinc.com/product_images/w/736/shunt02__18613_zoom.jpg
> Inductive and Hall effect AC current probes often have a low enough
> bandwidth to misread complex waveforms. That includes Tek P6020
> passive current probes.
> jsw
Posted by Jim Wilkins on May 25, 2012, 1:42 am
> On 5/24/2012 3:47 PM, Jim Wilkins wrote:
>> ...
>> If you are on a home-experimenter budget with old surplus
>> equipment,
>> accurate AC power measurement is quite a challenge.
> My point is that it IS NOT difficult at all.
> IN the US, there's a wattmeter at the utility entrance.
> OR
> A $0 KillAWatt meter will do pretty well for AC powered stuff.
> You can measure output power with a resistor, thermometer, stopwatch
> and a pound of water.
I'm not convinced that a KAW reads correctly on the output of a UPS or
inverter.
My utility meter records 7.2 Watt-Hours per disk rotation. It's the
value stamped in the 'Kh" box.
jsw
Posted by mike on May 25, 2012, 4:09 am
On 5/24/2012 6:42 PM, Jim Wilkins wrote:
>> On 5/24/2012 3:47 PM, Jim Wilkins wrote:
>>> ...
>>> If you are on a home-experimenter budget with old surplus
>>> equipment,
>>> accurate AC power measurement is quite a challenge.
>>
>> My point is that it IS NOT difficult at all.
>> IN the US, there's a wattmeter at the utility entrance.
>> OR
>> A $0 KillAWatt meter will do pretty well for AC powered stuff.
>> You can measure output power with a resistor, thermometer, stopwatch
>> and a pound of water.
> I'm not convinced that a KAW reads correctly on the output of a UPS or
> inverter.
Ok, so who said to power it with an inverter? Try sinewave outa the
wall socket.
Yes, you can conceive a load crest factor that makes it inaccurate.
But it's a moot point. The output is gonna be WAY bigger than the input
power for any useful free energy device. Your biggest problem is to
moderate that infinite energy.
It's a diversion, but any device that fools the energy company into
billing you for less has value too...until they catch you.
Same problem I have with Rossi. If it works, you won't need a generator
the size of a boxcar and high accuracy measurement tools. Just measure
how long it takes to boil a quantity of water and show that it's WAY
more energy than you put in. If it's a maze of pipes in a box inside a
boxcar beside
a generator behind a curtain, it's a scam.
> My utility meter records 7.2 Watt-Hours per disk rotation. It's the
> value stamped in the 'Kh" box.
Mine puts out infrared pulses watts600*Freq. But you'd need to spend
a quarter on a garage-sale PalmIII to read it.
> jsw
One more time...a WORKING free-energy device is gonna be EASY to verify.
You'll probably have the fire department as witness.
And if it turns out that you were mistaken and your device did follow
the known
laws of physics, you'd have the AEC, NRC, Hazmat and homeland
security as witness.
It's not rocket surgery, it's snake oil.
Posted by Jim Wilkins on May 25, 2012, 11:36 am
> On 5/24/2012 6:42 PM, Jim Wilkins wrote:
>> ...
>> I'm not convinced that a KAW reads correctly on the output of a UPS
>> or
>> inverter.
> Ok, so who said to power it with an inverter? Try sinewave outa the
> wall socket.
The KWH reading from a discharge test gives the remaining capacity of
the battery that powers the inverter, simply and safely.
I use a KAWez P4460 which retains the values after the inverter's low
voltage shutdown, and reads to 0.01 KWH or 10 Watt-Hours, so it has
enough resolution for small UPS batteries.
The indicated capacity of a new deep-discharge battery wan't much less
than what it should be, though it was discharged in six hours instead
of the 20 of its A-H rating.
I haven't finished the extra hardware and programming necessary to
read battery voltage and current with a laptop and datalogger. I have
a Radio Shack multimeter with an optically isolated serial port and a
serial port Dataq DI-194, both of which I can operate from DOS+QBasic
(unlike USB devices) on a laptop with 0~5V COM signal levels. Their
included Windows programs will run simultaneously but they log to
different files at different sampling rates.
Dataq's current lineup:
http://www.dataq.com/?source=googledq&gclid=CODez8y1kasCFesLtAodJS-Qtg
An isolated current sensor:
http://www.gmw.com/magnetic_sensors/ametes/CS.html
jsw
>> ...> Who uses resistive loads any more?
> Us 'home experimenters' do.
>>