230V light bulb power drain at 115V??

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Behemot
    Badcaps Legend
    • Dec 2009
    • 4845
    • CZ

    #1

    230V light bulb power drain at 115V??

    I got two lamps 230V/100 W together for loading UPSes after battery swap. The thing is, I got arround 7 UPSes for american power grid (115V), but only one 230/115 transformer. So I will renew only one of them. (I can use them for powering Cisco Catalysts, they eat 115 V as well)

    But the problem is, I do not know what to load it with. I do not want to use any ordinary PSU because of power factor, light bulb is ideal for me. They will work at 115 V, sure, but what would be their power drain from at 115 V? I need the most exact number if possible to determine battery capacity (whether it +- correspond with new bats capacity).
    Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

    Exclusive caps, meters and more!
    Hardware Insights - power supply reviews and more!
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: 230V light bulb power drain at 115V??

    What is the make and model number of the US UPS?
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • Behemot
      Badcaps Legend
      • Dec 2009
      • 4845
      • CZ

      #3
      Re: 230V light bulb power drain at 115V??

      It is some Manhattan. And yes, I had a look, it is only able to work from 110-120 V/50-60 Hz grid, no greater range. Thats written directly on it.
      Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

      Exclusive caps, meters and more!
      Hardware Insights - power supply reviews and more!

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: 230V light bulb power drain at 115V??

        Usually the model number will indicate the VA rating, for example APC-850 is 850VA (550W).
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • Behemot
          Badcaps Legend
          • Dec 2009
          • 4845
          • CZ

          #5
          Re: 230V light bulb power drain at 115V??

          Its 1200 VA. I don't really see how is this helpfull? I need to know what power a 230V lightbulb (60+40 W) will drain on 115 V (UPS's output). Than I will let it run on batteries and from the runtime calculate battery capacity. Than I will compare it with nominal capacity and see whether it corresponds somehow, or I will have to do some calibration.

          I do that with 230V UPSes just fine…here is the problem that I obviously do not have 115V bulbs, you see
          Last edited by Behemot; 09-11-2012, 10:04 AM.
          Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

          Exclusive caps, meters and more!
          Hardware Insights - power supply reviews and more!

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: 230V light bulb power drain at 115V??

            1200VA UPS will have 790Watts Rating this will tell you how much your batteries will have to at least supply the power to the load, so the the run time will depend on your batteries AH rating. You have True RMS DMM with AC amp function right? Just put the meter in series with your lamps to take current readings and another True RMS meter to read the voltage then calculate the Wattage. Now do you see why the VA that I ask does matter? You can still use your 230V lamps as the load, all you care is how much power your lamps are drawing from the UPS. I use heat element for testing ou UPS products.
            http://www.engineersedge.com/battery...ry_ratings.htm
            http://gbindustrialbattery.com/Batte...H_Ratings.html
            http://www.dcbattery.com/faq.html
            Last edited by budm; 09-11-2012, 10:38 AM.
            Never stop learning
            Basic LCD TV and Monitor troubleshooting guides.
            http://www.badcaps.net/forum/showthr...956#post305956

            Voltage Regulator (LDO) testing:
            http://www.badcaps.net/forum/showthr...999#post300999

            Inverter testing using old CFL:
            http://www.badcaps.net/forum/showthr...er+testing+cfl

            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
            http://s807.photobucket.com/user/budm/library/

            TV Factory reset codes listing:
            http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • Behemot
              Badcaps Legend
              • Dec 2009
              • 4845
              • CZ

              #7
              Re: 230V light bulb power drain at 115V??

              Been thinking about that, yeah. Because on ohmic load you can just multimply current and voltage to get power drain even on AC, right, as there is no power factor

              I know what batteries I will use very well - highest capacity what could be squeezed inside every UPS In this particular case they are the same as original - 2x17 Ah 12 V. Thats 408 Wh nominal.
              Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

              Exclusive caps, meters and more!
              Hardware Insights - power supply reviews and more!

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: 230V light bulb power drain at 115V??

                "Been thinking about that, yeah. Because on ohmic load you can just multimply current and voltage to get power drain even on AC, right, as there is no power factor" That is correct, that is why the resistive load is used since PFC will be = 1.
                Never stop learning
                Basic LCD TV and Monitor troubleshooting guides.
                http://www.badcaps.net/forum/showthr...956#post305956

                Voltage Regulator (LDO) testing:
                http://www.badcaps.net/forum/showthr...999#post300999

                Inverter testing using old CFL:
                http://www.badcaps.net/forum/showthr...er+testing+cfl

                Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                http://s807.photobucket.com/user/budm/library/

                TV Factory reset codes listing:
                http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • Behemot
                  Badcaps Legend
                  • Dec 2009
                  • 4845
                  • CZ

                  #9
                  Re: 230V light bulb power drain at 115V??

                  Yep, that is why I have chosen that, cause of knowledge it will drain current corresponding to those 100 W and nothing more.

                  Just have to be carrefoul, U know, messing with 115V cables arround is not too safe, not mentioning my multimeter can handle currents over 200 mA only for some short time…
                  Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                  Exclusive caps, meters and more!
                  Hardware Insights - power supply reviews and more!

                  Comment

                  • budm
                    Badcaps Legend
                    • Feb 2010
                    • 40746
                    • USA

                    #10
                    Re: 230V light bulb power drain at 115V??

                    Your meter cannot do 10A AC? I deal with with voltage at 6000V 3000A for surge testing everyday.
                    Never stop learning
                    Basic LCD TV and Monitor troubleshooting guides.
                    http://www.badcaps.net/forum/showthr...956#post305956

                    Voltage Regulator (LDO) testing:
                    http://www.badcaps.net/forum/showthr...999#post300999

                    Inverter testing using old CFL:
                    http://www.badcaps.net/forum/showthr...er+testing+cfl

                    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                    http://s807.photobucket.com/user/budm/library/

                    TV Factory reset codes listing:
                    http://www.badcaps.net/forum/showthread.php?t=24809

                    Comment

                    • Behemot
                      Badcaps Legend
                      • Dec 2009
                      • 4845
                      • CZ

                      #11
                      Re: 230V light bulb power drain at 115V??

                      Yep, 10 A for a few seconds only…but I am not sure whether it even is for AC, have to have a look.
                      Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                      Exclusive caps, meters and more!
                      Hardware Insights - power supply reviews and more!

                      Comment

                      • momaka
                        master hoarder
                        • May 2008
                        • 12175
                        • Bulgaria

                        #12
                        Re: 230V light bulb power drain at 115V??

                        Originally posted by Behemot
                        Yep, 10 A for a few seconds only…but I am not sure whether it even is for AC, have to have a look.
                        If it's a cheap 830 variant, it's only for DC. I *think* you may be able to use a diode to rectify it in order to measure it.

                        Comment

                        • Behemot
                          Badcaps Legend
                          • Dec 2009
                          • 4845
                          • CZ

                          #13
                          Re: 230V light bulb power drain at 115V??

                          Yep, its DC only. Wouldn't rectifying increase voltage?
                          Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                          Exclusive caps, meters and more!
                          Hardware Insights - power supply reviews and more!

                          Comment

                          • joshnz
                            Badcaps Veteran
                            • Feb 2011
                            • 969
                            • New Zealand

                            #14
                            Re: 230V light bulb power drain at 115V??

                            The 2 lamps in parallel will use around 100 Watts at 115 volts.
                            My pc
                            CPU : AMD PHENOM II x4 @ 3.5Ghz
                            MB : ASUS M4A89TD PRO USB3
                            RAM : Kingston ValueRAM 16gb DDR3
                            PSU : Cooler Master 850W Silent Pro
                            GPU : ATI Radeon HD 6850

                            Comment

                            • momaka
                              master hoarder
                              • May 2008
                              • 12175
                              • Bulgaria

                              #15
                              Re: 230V light bulb power drain at 115V??

                              Originally posted by Behemot
                              Yep, its DC only. Wouldn't rectifying increase voltage?
                              No.
                              AC line voltage is measured as RMS, but the actual peak of the AC wave (the amplitude) is near sqrt(2)*line voltage... so ~311 V peak for 220 VAC RMS and 325 V peak for 230 VAC RMS.

                              Comment

                              • Behemot
                                Badcaps Legend
                                • Dec 2009
                                • 4845
                                • CZ

                                #16
                                Re: 230V light bulb power drain at 115V??

                                Yes, but RMS multiplied by current equals to power for resistive load. Not sure whether the power will stay the same after rectyfing for higher voltage (means also higher current than, even though not linearly due to the temperature).
                                Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                                Exclusive caps, meters and more!
                                Hardware Insights - power supply reviews and more!

                                Comment

                                • budm
                                  Badcaps Legend
                                  • Feb 2010
                                  • 40746
                                  • USA

                                  #17
                                  Re: 230V light bulb power drain at 115V??

                                  "The RMS value of an alternating current is also known as its heating value, as it is a voltage which is equivalent to the direct current value that would be required to get the same heating effect. For example, if we applied 120 V AC RMS to a resistive heating element it would heat up by exactly the same amount as if we had applied 120V DC."
                                  So for the generator to produce the same power as 120VDC, the generator will have to put out 338.4V Peak-to-Peak or 120VRMS.
                                  So "The 2 lamps in parallel will use around 100 Watts at 115 volts." is correct. I used resistors/lamps for loading every day when I work on AC voltage regulators for both US and Euro products. Our biggest AC regulator is rated at 230VAC 30A, weights about 100lbs.

                                  http://en.wikipedia.org/wiki/True_RMS_converter
                                  Last edited by budm; 09-17-2012, 08:58 PM.
                                  Never stop learning
                                  Basic LCD TV and Monitor troubleshooting guides.
                                  http://www.badcaps.net/forum/showthr...956#post305956

                                  Voltage Regulator (LDO) testing:
                                  http://www.badcaps.net/forum/showthr...999#post300999

                                  Inverter testing using old CFL:
                                  http://www.badcaps.net/forum/showthr...er+testing+cfl

                                  Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                                  http://s807.photobucket.com/user/budm/library/

                                  TV Factory reset codes listing:
                                  http://www.badcaps.net/forum/showthread.php?t=24809

                                  Comment

                                  • Behemot
                                    Badcaps Legend
                                    • Dec 2009
                                    • 4845
                                    • CZ

                                    #18
                                    Re: 230V light bulb power drain at 115V??

                                    Well, I am just not sure whether it works on light bulbs 100 %. Their power drain is heavily dependent on temperature…
                                    Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                                    Exclusive caps, meters and more!
                                    Hardware Insights - power supply reviews and more!

                                    Comment

                                    • budm
                                      Badcaps Legend
                                      • Feb 2010
                                      • 40746
                                      • USA

                                      #19
                                      Re: 230V light bulb power drain at 115V??

                                      That is why you let the resistors or lamp reach its temperature in the control room that maintain ambient temperature, beside you will used calibrated AC amp meter and AC RMS volt meter both with graph outputs to monitor the load to make the calculation.
                                      Never stop learning
                                      Basic LCD TV and Monitor troubleshooting guides.
                                      http://www.badcaps.net/forum/showthr...956#post305956

                                      Voltage Regulator (LDO) testing:
                                      http://www.badcaps.net/forum/showthr...999#post300999

                                      Inverter testing using old CFL:
                                      http://www.badcaps.net/forum/showthr...er+testing+cfl

                                      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                                      http://s807.photobucket.com/user/budm/library/

                                      TV Factory reset codes listing:
                                      http://www.badcaps.net/forum/showthread.php?t=24809

                                      Comment

                                      • Behemot
                                        Badcaps Legend
                                        • Dec 2009
                                        • 4845
                                        • CZ

                                        #20
                                        Re: 230V light bulb power drain at 115V??

                                        I mean temperature of the wire inside bulb. It increases its resistance with great margin cause of temperature over 1000 °C.
                                        Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                                        Exclusive caps, meters and more!
                                        Hardware Insights - power supply reviews and more!

                                        Comment

                                        Related Topics

                                        Collapse

                                        • repair-it
                                          TOSHIBA DLP 52HM95 How to reset timer module on bulb
                                          by repair-it
                                          I replaced the bulb only on my Toshiba DLP The bulb is a TB-25. This is the first time I've done a bulb only replacement. Supposedly there is a timer module that needs to be re-calibrated or reset. I don't know where the module is located. I see some vendors selling the bulb with the housing stating module included which leads me to think the module is located inside the enclosure the bulb mounts in, but I didn't see it. Maybe it's inside the plug attached to the bulb?

                                          Anyway - I am seeking information on how to reset this so called module so that the lamp will operate. Apparently...
                                          10-11-2023, 07:18 PM
                                        • Document Archive
                                          LG Gram Ultra-light Weight Notebook Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the LG Gram Ultra-light Weight Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Ultra-light Weight boardview and Ultra-light Weight schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet,...
                                          09-07-2024, 03:40 AM
                                        • Document Archive
                                          LG Gram Ultra-Light Laptop Notebook Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the LG Gram Ultra-Light Laptop Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Ultra-Light Laptop boardview and Ultra-Light Laptop schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet,...
                                          09-06-2024, 09:10 PM
                                        • Document Archive
                                          LG Gram Ultra-Light Laptop Notebook Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the LG Gram Ultra-Light Laptop Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Ultra-Light Laptop boardview and Ultra-Light Laptop schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet,...
                                          09-06-2024, 08:40 PM
                                        • serious_electron
                                          Strange! Acer laptop not powering on but charging the battery (orange light on when charger and battery plugged in).
                                          by serious_electron
                                          Hello Everyone!

                                          I have an Acer Aspire A315-42 laptop. I generally leave it on for long time by closing down its lid (so it enters the sleep mode). Recently, it rained quite heavily in out area. And the humidity and moisture seem to be high. So one late evening, after I opened the lid and turned on the laptop, it did power on as the blue light turned on but after it booted to the desktop screen, just 5-10 seconds after both the screen and blue light went out and laptop shut down (the blue power light turned orange). And after 2-4 seconds that orange light went off and the laptop died.
                                          ...
                                          06-28-2025, 02:57 PM
                                        • Loading...
                                        • No more items.
                                        Working...