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Introduction to Mold Making & Casting
Tools & Supplies
Mold Making & Casting Class
Of course, Also I have my tiny 2n2222 as Oscillator, but this time I connected a ceramic capacitor labeled "224" between Collector and emitter, and the LED is bright constantly!!
I found two new MOSFET IRFZ44 would it be posible to make it work as oscillator?
I have a doubt.I built this one, just for testing. I know that the TIP31 is the best, cuz its a power transistor, so It supports a big load, well might be not so big, for almost make it work a 127v lamp.But at this time, I don't wanted to risk money if will not work for me. :DSo I have in my hands:1) 1 2N2222 NPN Transistor (tiny package TO92A).2) Magnet wire,AWG 20 I think so (I don't know how to know the caliper of a conductor without a tool LOL)3) Magnet wire (very thin, like hair, red, rescued from a PSU element with two coils).4) 1 Battery 1.5V5) 3 inch external Diameter Ferrite toroid.What I've done?:--------------------FOR BUILD THE PRIMARY COIL (1.5V)----------------------1) Cover the toroid with one layer of masking tape.2) With the "22AWG Magnet Wire" I done 14 Turn...see more »I have a doubt.I built this one, just for testing. I know that the TIP31 is the best, cuz its a power transistor, so It supports a big load, well might be not so big, for almost make it work a 127v lamp.But at this time, I don't wanted to risk money if will not work for me. :DSo I have in my hands:1) 1 2N2222 NPN Transistor (tiny package TO92A).2) Magnet wire,AWG 20 I think so (I don't know how to know the caliper of a conductor without a tool LOL)3) Magnet wire (very thin, like hair, red, rescued from a PSU element with two coils).4) 1 Battery 1.5V5) 3 inch external Diameter Ferrite toroid.What I've done?:--------------------FOR BUILD THE PRIMARY COIL (1.5V)----------------------1) Cover the toroid with one layer of masking tape.2) With the "22AWG Magnet Wire" I done 14 Turns and 5 turns then for the Primary coil (in the middle of this turns, I made 1 pin for the TAP center).3) In one of the extremes of the coil I welded the Colector of the NPN Transistor4) In the other extreme of the coil I welded the Emitter of the NPN Transistor. Then weld this union with the negative side of the battery.5) I welded the TAP Center of the coil with the positive side of the battery.-----------------FOR THE SECONDARY COIL--------------------------------I made 100 turns of this tiny red wire, I know that will be 300 turns.But I only reach for this :D.Obviously It doesn't cover all the surface of the toroid.So, It's showtime!!:I plug the battery on the battery holder, and voila.Obviously It will not generate 127V at the secondary coil, cuz i only built 100 turns.When I plug it, immediately the Toroid transformer starts to "buzzing"I took my multimeter to make measurements, and I found that it generates 37 volts, but goes to 37VAC to 0 then 5VAC and then 37VAC.I supposed that this effect is by I don't used a Capacitor, so I see how the coil is being charged and discharged, is that right?.Then I probe that plugging a rectifier bridge and a LED.So thats what the circuit does:Starts buzzing and the LED is very very bright, then gradually the buzzing becomes lower, and the LED lost bright, And keeps turned on but with Low light.At this time the LED have 2 continuous days turned on.NOTES:1) I found that is not really a Joule thief, its more like a classical inverter with a transistor as oscillator, but Instead of using a Classical "E and I" shaped transformer, uses a Toroid transformer, that is more efficient.QUESTIONS:If i Use a Ceramical 22uF Capacitor between the collector and emitter of the NPN. Will I solve the Use of charge and discharge the battery?.Thanks
I will buy the IP31 as you recommend, so I also wanna try to use several of this in parallel. I know that running transistors in parallel increases the power
So Wire gauge isn't Critical?, If found some info and and Amperage/AWG table that said that If you want more amperage to support a heavy load, you need to use a wire with more gauge.In my opinion, Might be I'm wrong
The very big problem is to pay with the "special coin", and all your files on the SD will go directly to the trash!! XD LOL
Its there a way to scramble audio transmitted and then de-scrambled on a FM receiver? In order to get a secret communication and avoid other to hear the audio?
hi cable Guy!!.What wire gauge are you using?, I went to the electronics shop and I found that I several gauges :DI bought on that its not thinner but not so fat.
And how many turns are needed?
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