The CFL's light up, holding the output voltage of the transformer down. Once the filaments burn away, the voltage of the transformer goes up enough to exceed the break down voltage of the switching transistor, and that's when the board flashes over, and goes up in flame. The fan motor is a mismatch in impedance, which means, the transformer gets as hot as the motor. Smoke from both. The transformer is heavier, thus more thermal mass, and will usually win, but barely.
Usually most modern caps made for microwaves have internal bleeder resistors around 10M ohms, but I totally agree. You can never to be too safe; especially with MOTs. They are unforgiving and will not give you a second chance if you get shocked eh!
@pcblah I was careful that the bulbs did not break. Plus, the dangers of mercury are greatly over exaggerated. Long term exposure and/or consumption is where the real dangers lie.
~2000V at about 550mA. Enough voltage and current to probably be the most lethal device in your home, so please do not attempt unless you have been properly trained.
I've had MOTs that can put out 2.5kV @ 2A unballasted so you can never be too careful with these bad boys!!!! They should be able to handle 2kW quite easily, I have mine ballasted to 800W at the moment but will be adding more ballasts when I can get them!!
Yes, except the newer ones that have inverters. If you are thinking about getting one, please don't. They are extremely dangerous and attached to a capacitor that could hold 2000V for weeks and weeks after it's been unplugged. One good jolt from that and it's all she wrote. :-/
+Shaheer Syed A ballast is required for gas discharge tubes (fluorescent lamps, neon lights, etc.) because of a phenomenon known as negative resistance. Unlike a normal circuit where increasing voltage will increase the resistance, the opposite is true of a gas discharge tube. The higher the voltage, the lower the resistance and the more current will flow. This cycle repeats until the current draw exceeds the limits of the tube and it will explode/burn. Ballasts provide positive impedance in a circuit with a fluorescent tube so this doesn't happen. It also provides the initial strike voltage to the tube so it starts.
The fan nearly took out the MOT, great to see the copper windings discolour.
Great video.
Brilliant, just watching it again 9 years later.
I agree! The sound of that second CFL burning and arcing up is so characteristic.
The CFL's light up, holding the output voltage of the transformer down. Once the filaments burn away, the voltage of the transformer goes up enough to exceed the break down voltage of the switching transistor, and that's when the board flashes over, and goes up in flame. The fan motor is a mismatch in impedance, which means, the transformer gets as hot as the motor. Smoke from both. The transformer is heavier, thus more thermal mass, and will usually win, but barely.
I am going out of the 0:08
Great video mate...
That fan motor lasted a lot longer than I thought it would.
Usually most modern caps made for microwaves have internal bleeder resistors around 10M ohms, but I totally agree. You can never to be too safe; especially with MOTs. They are unforgiving and will not give you a second chance if you get shocked eh!
@pcblah I was careful that the bulbs did not break. Plus, the dangers of mercury are greatly over exaggerated. Long term exposure and/or consumption is where the real dangers lie.
There's not enough mercury in a CFL to even matter. My biggest concern is the phosphor. That super fine white dust.
~2000V at about 550mA. Enough voltage and current to probably be the most lethal device in your home, so please do not attempt unless you have been properly trained.
I've had MOTs that can put out 2.5kV @ 2A unballasted so you can never be too careful with these bad boys!!!! They should be able to handle 2kW quite easily, I have mine ballasted to 800W at the moment but will be adding more ballasts when I can get them!!
I don’t think you understand the 0:00
Lol those flashovers were great!
Yes, except the newer ones that have inverters.
If you are thinking about getting one, please don't. They are extremely dangerous and attached to a capacitor that could hold 2000V for weeks and weeks after it's been unplugged. One good jolt from that and it's all she wrote. :-/
@podeCoet
Thank You, and you have gained one as well.
I always wondered why don't cfls use simple transformers instead of ballasts.
+Shaheer Syed A ballast is required for gas discharge tubes (fluorescent lamps, neon lights, etc.) because of a phenomenon known as negative resistance. Unlike a normal circuit where increasing voltage will increase the resistance, the opposite is true of a gas discharge tube. The higher the voltage, the lower the resistance and the more current will flow. This cycle repeats until the current draw exceeds the limits of the tube and it will explode/burn.
Ballasts provide positive impedance in a circuit with a fluorescent tube so this doesn't happen. It also provides the initial strike voltage to the tube so it starts.
GGigabiteM Okay, thanks. However you're a bit late and I learnt a few weeks ago
CFLs are great firestarters
you look so epic in those sunglasses!
thisis awsome anyway what is a mot?
@theussmirage lol, those were eye protection glasses from the hardware store. :-P
Awesome. I nuked a fan like that with a MOT before. They sure smoke a lot before they die.
MOT vs MOT
Since the potentials are the same it would do nothing.
("RNA0ROGER") But if they were out of phase the BOOM!
MOT vs. fan. Yeah, that was a tie.
Subbed! haha burning stuff out with electricity is the new cool thing to do :D
Nice flashbulb XD
You have gained one subscriber :-)
MOT is short for Microwave Oven Transformer.
Your computer when you Run 8K
ok,so is a mot used in a microwave?
Yes, it is the power supply that allows the magnetron to work
@@TechHowden oh thanks for the info, I mean it’s not like it took you 9 years to reply… but it’s whatever ig))
eh, why?
mot was smoking quite a bit
Try a fluorescent tube! :)
@ElectronSpark oh... well i hate school now :P
1:27
Bonus
bad jop
that was volatile!!!
:)