steven Posted December 10, 2006 Report Share Posted December 10, 2006 :) oops i put the wrong tranny down sorrey Quote Link to comment Share on other sites More sharing options...
steven Posted December 10, 2006 Report Share Posted December 10, 2006 :)oops 2n5038 tranny was the one i used in place of the tesla trannys i got the part number wrong. the 2n5038 i have is the same size and shape as the 2n3055 npn tranny, thats twice i oops up. Quote Link to comment Share on other sites More sharing options...
audioguru Posted December 10, 2006 Report Share Posted December 10, 2006 Hi Steven,You wrote that the microwave lightbulb is marked 2A at 250V. That is 500W!The lightbulb would cook the food and the microwaves aren't needed.Look again, it is probably marked, "0.2A". Then it would be 50W at 250V or 40W at your 240V. Quote Link to comment Share on other sites More sharing options...
steven Posted December 10, 2006 Report Share Posted December 10, 2006 :)2A 250 V T180 thats all thats on it Quote Link to comment Share on other sites More sharing options...
steven Posted December 10, 2006 Report Share Posted December 10, 2006 :) Quote Link to comment Share on other sites More sharing options...
ante Posted December 10, 2006 Report Share Posted December 10, 2006 Hi Steven,The 2A 250V you’ve got there must be the maximum rating for the socket not the bulb I believe. Quote Link to comment Share on other sites More sharing options...
steven Posted December 10, 2006 Report Share Posted December 10, 2006 theres nothing on the bulb so im mystified there Quote Link to comment Share on other sites More sharing options...
ante Posted December 10, 2006 Report Share Posted December 10, 2006 These bulbs are usually something like 10 – 20 W, this is not always marked on unfortunately. Quote Link to comment Share on other sites More sharing options...
audioguru Posted December 10, 2006 Report Share Posted December 10, 2006 It looks like my 4W and 7W night-light bulbs, except it is dimmed. Quote Link to comment Share on other sites More sharing options...
steven Posted December 10, 2006 Report Share Posted December 10, 2006 i found the details it was on the shiney metal side of the globe it was a bit hard to see so i used my dome lense to view it , and i took a picture of it useing the zoom lense of my digital camera. its 240 volts 25 watts so how many amps is it , my inverter circuit only makes it look dim as i have it turned down so the tranny wont over heat Quote Link to comment Share on other sites More sharing options...
steven Posted December 10, 2006 Report Share Posted December 10, 2006 :)i have to make the rectifier circuit to run off this inverter so i can use it in my hydrogen/oxygen from water exsperiment heres a picture of it under construction Quote Link to comment Share on other sites More sharing options...
audioguru Posted December 10, 2006 Report Share Posted December 10, 2006 The current in the light bulb when it is very bright is only 25W/240V= 0.1A. Since yours is dim then its operating power and current are a lot less.Maybe you can fix the cause of the hot transistor:1) Swap the Tesla output transistors.2) Swap the BD234 driver transistors.3) Swap the 15 ohm output base drive resistors.If the other side gets hot then you have found the problem. Quote Link to comment Share on other sites More sharing options...
steven Posted December 10, 2006 Report Share Posted December 10, 2006 :)thats only a small one sp it may be easyer to work and i can add another t peace in the middle section and use that and the left or right section , this will be like bringing the electrodes closer for faster effects Quote Link to comment Share on other sites More sharing options...
AN920 Posted April 6, 2007 Report Share Posted April 6, 2007 A square wave inverter can provide a reasonable sine wave output with a few modifications. This was a common method long ago before fast switching pwm. This was implemented with scr type square wave inverters but can also be applied to transistor or fet types. Basically the switching current is forced to be resonant producing a sine output. This was good up to several kW's.The drawback is that the tuning element values are somewhat load dependant. Also voltage regulation is also load dependant. A more complicated sceme can be used which requires a extra tap on each half secondary winding to provide passive feedback to overcome these problems. Performance was typical 2.5% output change for 25% input variation at full load.Pictures show typical waves to be expected from this inverter. One is from my simulation and other from actual documented test. Quote Link to comment Share on other sites More sharing options...
steven Posted April 7, 2007 Report Share Posted April 7, 2007 :) intresting keep up the good work Quote Link to comment Share on other sites More sharing options...
shivamukiri Posted May 25, 2010 Report Share Posted May 25, 2010 hai guys this is shiva newly added as ur friend please i want pure sinewave inverter circuit diagram for input 24v dc output 230v ac with pwm based circuit diagram pls send as early as possible.the rating of inverter is 1kv or 2kv simple circuit,thanking u Quote Link to comment Share on other sites More sharing options...
Guest Kasamiko Posted August 9, 2012 Report Share Posted August 9, 2012 It's been awhile since my last visit on this thread and was so disappointed that almost all the attachment is NOT available anymore.404 - Attachment Not FoundOr it's just me? ???Good day to all..Rhonn Quote Link to comment Share on other sites More sharing options...
Hero999 Posted August 10, 2012 Report Share Posted August 10, 2012 Many old attachments were lost when the server crashed awhile ago. Quote Link to comment Share on other sites More sharing options...
Guest Kasamiko Posted August 15, 2012 Report Share Posted August 15, 2012 disaster.. :'( Quote Link to comment Share on other sites More sharing options...
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