RANT CAFFE ASYLUM

[WhatIsIt]

CaptainLoz or Chris,

1. It is too bad that nobody outside your web site can not
confirm what you two, or one, are doing.

2. At this point it would be easier to loop the device,
and confirm your overunity than rant around with equations.

But hey, show must go on. Right?

[WhatIsIt]

Consider that CaptainLoz and Chris are on opposite side of the world,
reader should expect that their activity staus should be opposite as well?

Well they look similar to me, like they are from same time zone.
They are both from Australia, or should I say they are same person.

CaptainLoz has only 15 posts and his activity status is not so dense as Chris,
but is visible enough to make the point.

[ramset]

A cardboard box and a thermometer...not a big investment

put Device in Box with temp probe ...[put everything in Box [batteries if using for power etc...

run device note temperature ceiling [where it levels off and holds againstlosses to ambient [the reason you use cardboard.. it is "Lossy"  ... looses heat to environment ]
write down temp
Now remove DUT and run same test with common appropriate sized resistor in same box [worlds most efficient use of electricity... heat...all losses contribute to task "heating" write down Temp and compare...[If Device Temp is higher than Common resistor at same input in same ambient...??
nobody has ever done this...BIG NEWS



obvious addendum...

ambient temp should be the same for both tests [side by side at same time is nice...if box gets dangerously hot ? use bigger Box or run test in colder ambient.
such small output will not start fire or overheat in not insulated box.



beat the heat of common resistor at same input ...do the happy Dance.
don't beat the resistor...look for issue.
ION taught this "fixed loss to ambient protocol" for all manner of difficult measurements where scopes and probes can be tricked or high frequency,magnetism ...whatever... etc etc ?
super simple and works. [he had his techs use this for quick tests at lab ]
VERY GOOD TOOL FOR THE TOOLBOX OF LOW MONEY EXPERIMENTERSLOOKING TO BUILD.thermometer and cardboard ...[noting time to heat good indicator too.

beat the common resistor [for making heat]the world will really notice.

[picowatt]

Ramset,

In the past, to measure real power from a complex or high frequency source, a gizmo called a differential thermal wattmeter was used.  Basically, the device under test would drive a resistive load.  A voltage controlled DC power supply was used to drive an identical resistive load.  A thermister was mounted to both resistive loads and a differential amplifier was used to generate an error voltage to control the DC supply's output and maintain both resistive loads at identical temperatures.  The power measurement was then easily determined by the power required from the DC supply.  Electronically, its a fairly simple device.  Most of the accuracy was determined by how well matched the thermal properties of the housing/chimney for the resistive loads was.

Construction and calibration of a fairly accurate version of such a device is not that difficult.  Having a DC power supply with a control voltage input is very helpful.

PW   

[Smudge]

Another similar technique when the load is a light bulb (very non-linear resistance) is the light comparison test.  Have two identical light bulbs within two identical enclosures that are side by side.  Each enclosure has a ground-glass panel on one face, and the two glass panels are adjacent.  Light one bulb from the DOT and the other bulb from a DC supply.  Adjust the DC until both bulbs emit the same quantity of light as seen on the glass panels, then accurately measure the DC voltage and current.
Smudge