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  • Originally posted by RAMSET View Post
    Quantum
    I am discussing this here also as a possible test procedure for these devices!!

    Thanks
    Chet

    I think this procedure is adequate. However, the unit KWH is energy. If in 14 min you used 36KJ, then it is indeed 60% efficient.

    Comment


    • Mmm Like you I am not familier with this type of watt/meter I have never owed one .. still I see your point, However if you consider your house meter it has no time relationship involved,It simply ratchets up as more energy is consumed ,& so the units could be watt/seconds for instance , I guess KWH are just convenient sized numbers. and that is how I viewed Ramsets Watt meter
      In practice the domestic House KWh meter has a voltage coil (220v in europe)
      and really the only variable is current. The "KW and hours" bit then being a design paramaters of the meter itself that is reasonably easy to electrically relate to.
      Really there is no reason why the meter could not be made to record BTUs for instance or the gas meter to record Kwh ... anyway I stand to be corrected!
      C.O.P 4.83 ??? Wow shhhhhh Ramset white coats will visit.
      as for using it as a real measurement tool I quess controlled heat boxes and circulation would have to be considered .. not as easy as it sounds!
      Last edited by Duncan; 12-02-2011, 05:53 PM.
      Whatever you can do,or dream you can,begin it.Boldness has genius,power and magic in it.Begin it now.

      Comment


      • Ramset, I'm skimming here so I may have missed some things but consider that a light bulb is primarily intended to put out power in the visible spectrum and heat is only a part of what is radiated from it. The visible radiation of energy will not show up as heat and you may want to consider measuring the energy radiated in the visible spectrum also to add to your power output calculations. I'm not sure how you would do this other than with solar panels and those only are a max of about 20% efficient so you might come up with a rough estimate of how much power is put out in the visible spectrum that way.

        Another thought here too if you are simply trying to get some numbers on how much energy is used to heat water. Use one of those small coffee cup heating elements you can get for a couple bucks. I'm talking about the kind that hangs over the cup and sits directly in the water. No wasted energy in light from those. I am not sure if these are still in dollar stores but this is what I'm talking about : Immersion water heater
        There is no important work, there are only a series of moments to demonstrate your mastery and impeccability. Quote from Almine

        Comment


        • Originally posted by ewizard View Post
          Ramset, I'm skimming here so I may have missed some things but consider that a light bulb is primarily intended to put out power in the visible spectrum and heat is only a part of what is radiated from it. The visible radiation of energy will not show up as heat and you may want to consider measuring the energy radiated in the visible spectrum also to add to your power output calculations. I'm not sure how you would do this other than with solar panels and those only are a max of about 20% efficient so you might come up with a rough estimate of how much power is put out in the visible spectrum that way.

          Another thought here too if you are simply trying to get some numbers on how much energy is used to heat water. Use one of those small coffee cup heating elements you can get for a couple bucks. I'm talking about the kind that hangs over the cup and sits directly in the water. No wasted energy in light from those. I am not sure if these are still in dollar stores but this is what I'm talking about : Immersion water heater
          Last edited by JohnStone; 12-02-2011, 09:00 PM. Reason: correction
          Experts spend hours a day in order to question their doing while others stopped thinking feeling they were professionals.

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          • If you want to Change the world
            BE that change !!

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            • Drawbacks:
              • It is important to have short measuring cycles in order to not heat the solar cell.
              • The calibration is true for this special calibrated bulb only. New bulb -> new calibration.
              • The graph will show you at what minimum power (begin of extreme unlinearity) you should use another low power bulb setup.
              • Halogenbulbs preferred because they will not easily be modulated by the supply frequency
              Last edited by JohnStone; 12-03-2011, 11:32 AM. Reason: correct
              Experts spend hours a day in order to question their doing while others stopped thinking feeling they were professionals.

              Comment


              • I think what John is saying is that there may be a lot more heat energy coming off the bulb than visible light energy so I may be wrong in assuming that there was a worthwhile amount of energy in the visible spectrum that needs to be taken into account. Either way if you just want to measure the most direct way of seeing how much energy it takes to heat water from one temp. to another higher temp I'd suggest the immersion water heating element as being more accurate than a light bulb.
                There is no important work, there are only a series of moments to demonstrate your mastery and impeccability. Quote from Almine

                Comment


                • MoPoZcO

                  Transistor oscillator on Don Smith circuit:
                  Mopozco's Channel - YouTube

                  Comment


                  • Originally posted by ewizard View Post
                    I think what John is saying is that there may be a lot more heat energy coming off the bulb than visible light energy so I may be wrong in assuming that there was a worthwhile amount of energy in the visible spectrum that needs to be taken into account. Either way if you just want to measure the most direct way of seeing how much energy it takes to heat water from one temp. to another higher temp I'd suggest the immersion water heating element as being more accurate than a light bulb.
                    Hi,
                    you are right - the animal we want to have and measure is energy = heat. The conventional electrical energy is definied by the aibility to produce heat. So far OK.
                    Unfortunately the direct calorimetric measurements are very difficult to perform and suffer of a lot of varaying errors.(dissipation in the water, light emitting, heat loss due to insulation, time to stabilize vs. heat input, temperature measurement itself ....). These factors are very difficult to handle by mere mortals - like us! Measurements seem not to be comparable at all.

                    Therefore my suggestion to overcome most of the problems above.

                    My suggestion relates to the fact that a certain light intensitiy of a bulb is related directly to a corresponding input power and heat dissipationprevent inaccuracies by heat. (same when calibrating)

                    I am prepared with this setp and will use it as soon I have some replications worth to measure.
                    rgds John
                    Experts spend hours a day in order to question their doing while others stopped thinking feeling they were professionals.

                    Comment


                    • Originally posted by bbem View Post
                      Transistor oscillator on Don Smith circuit:
                      Mopozco's Channel - YouTube
                      Thanks for posting.
                      Mmmm - spark gap driven by AC out of a kind of NST replication. All trusty sources (zilano, utkin, tesla...) say we need DC spark. I am not an expert but I believe in those sources.
                      I'd like to see the output with spark shorted out and with diodes in order to compare.
                      rgds John
                      Experts spend hours a day in order to question their doing while others stopped thinking feeling they were professionals.

                      Comment


                      • RF Power Amplifiers...

                        @JohnStone
                        Have been reading some Utkin. Good stuff. Must spend more time with it, but offers many possible answers. I'm still working out the E X B field dynamics of the bifilar coil with the plate capacitor in the middle in my head.

                        I think you advised to look @ audio amplifiers. Most audio amplifiers are rated for 20hz-20khz or so. But what does that mean? They can't react faster than 20khz? Can't reproduce the signal above that frequency? Or can't reproduce with acceptable distortion? The human ear is only capable of hearing frequencies up to around 20khz, so maybe they just don't bother to publish specifications above and beyond this. I'm sure some systems do better at higher frequencies than others..

                        Anyway. I guess I will only know when I hook the HI-FI up to the oscilloscope with the signal generator.

                        Lot's of things to try and learn. :-)

                        I did begin to wonder if there exist "POWER AMPLIFIERS" that are designed to work above the audio spectrum. I searched for "RF POWER AMPLIFIERS" on eBay. Here's an example of what I found...

                        Amplifier Research 50A15 50 Watt broadband RF Power Amplifier covering the range | eBay

                        But this is a 3k device!!! What do you think something like this is for?

                        I found these interesting little units from RMCybernetics.

                        Cyber Circuits - Pulse Generators - RMCybernetics Shop

                        They are on the way. :-)


                        J

                        Comment


                        • Originally posted by jharmon View Post
                          @JohnStone
                          Have been reading some Utkin. Good stuff. Must spend more time with it, but offers many possible answers. I'm still working out the E X B field dynamics of the bifilar coil with the plate capacitor in the middle in my head.

                          I think you advised to look @ audio amplifiers. Most audio amplifiers are rated for 20hz-20khz or so. But what does that mean? They can't react faster than 20khz? Can't reproduce the signal above that frequency? Or can't reproduce with acceptable distortion? The human ear is only capable of hearing frequencies up to around 20khz, so maybe they just don't bother to publish specifications above and beyond this. I'm sure some systems do better at higher frequencies than others..

                          Anyway. I guess I will only know when I hook the HI-FI up to the oscilloscope with the signal generator.

                          Lot's of things to try and learn. :-)

                          I did begin to wonder if there exist "POWER AMPLIFIERS" that are designed to work above the audio spectrum. I searched for "RF POWER AMPLIFIERS" on eBay. Here's an example of what I found...

                          Amplifier Research 50A15 50 Watt broadband RF Power Amplifier covering the range | eBay

                          But this is a 3k device!!! What do you think something like this is for?

                          I found these interesting little units from RMCybernetics.

                          Cyber Circuits - Pulse Generators - RMCybernetics Shop

                          They are on the way. :-)

                          J
                          Hi Jharmon,
                          if you own an higer grade audioamplifier it is worth to try it. But please note that their cutoff frequency relates to sine signal. Square singnal up to 1/3 of cutoff frequency. At 1/2 of cutoff frequency you get a sine out of square.

                          If you intend to buy an amplifier then the "rmcybernetics.com" seem to be quite interesting. But please do not expect to get steep edges at cutoff frequency. But this will be no issue if you drive inuctive loads.
                          rgds John
                          Experts spend hours a day in order to question their doing while others stopped thinking feeling they were professionals.

                          Comment


                          • Don' circuit

                            Anyone had success on Don's Circuit?

                            Comment


                            • Originally posted by Guruji View Post
                              Anyone had success on Don's Circuit?
                              Not yet. Torturting my brain regarding Utkin and Zilano. Many conformities. I am too blind in order to find and understand the true content. I will do some of those experiments. Nobody in the net discussing Utkin. Maybe in Russian area. But we are excluded because of the language barrier.
                              rgds John
                              Experts spend hours a day in order to question their doing while others stopped thinking feeling they were professionals.

                              Comment


                              • This guy on the Russian forum claims a couple of KW out

                                Originally posted by Guruji View Post
                                Anyone had success on Don's Circuit?

                                Links on video:
                                Доска и турбина.avi - YouTube #
                                ДВИЖОК ПОСТОЯННОГО ТОКА И ДОСКА.avi - YouTube
                                Доска Смита и двигатель 2 - YouTube

                                Cheers H

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