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Household Electricity

I made a test lamp with a 100w 120v bulb and I tried it but

veronica

hace 6 años

what just happened to me ... I had an old power source that served ...... I connected it in series to a 100w 120v bulb and I put a 6amp thermomagnetic switch ....... connect everything and with some small alligators I puc in the pathetic wing of a condesador and the other one next to the 220uf condesador (I don't know if I touch anything else) ... And there was a small flash ... small ..... now my source does not turn on and it smelled a little burnt ... what do you think happened? the internal light up again and the light illuminates a little bit nothing more and does not turn the fan ... in one of the images you see in a circle a little sizzle what caused ... and on the other side the condor dond was putting it ... and now how do I fix it not much of the lectrnocy that I should review? The fuse is still well from the source .....

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JoseOrtiz

1.274

hace 6 años

And why were you connecting the lamp in that area? The serial lamp is connected between the device to be tested and the electrical outlet in order to protect against possible short circuits during repairs, it is not for testing internal components.

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veronica

hace 6 años

read well ... DO NOT connect the lamp in that area!

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JoseOrtiz

1.274

hace 6 años

Well, if you explained yourself better, you would understand what you write, what did you connect with alligators to the condenser leg and for what?

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veronica

hace 6 años

I made a short film to see how the lamp works .... and the short film was on a leg of the condesador and I don't know what else

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JoseOrtiz

1.274

hace 6 años

Ok, well in this type of switched sources the series is not very helpful unless you go to work with the primary zone, if you apply a "short" in the secondary one it would almost be imperceptible in the lamp, if you plan to look for a short in the Secondary you must put the lamp of the voltage and watts necessary in the secondary line, you should inform yourself better before going to practice ...

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veronica

hace 6 años

and how do I connect the lamp only in the secondary? to check and what do I check

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JoseOrtiz

1.274

hace 6 años

In your case I think it is not necessary to use the lamp, you should check the area where the problem originated and surrounding areas, transistors, resistors, mosfet, normal diodes and zeners in short, I do not know your source but it is what is done routinely.

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JoseOrtiz

1.274

hace 6 años

It is not to answer for answering, We already told you what you should do, you will not wait for us to tell you change the transistor this or that, it is on your part to make the diagnosis of damaged components, if you do not know about electronics you will have to take it to someone who knows and ready.

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Ennio Montenegro.

44.317

hace 6 años

Ale For what you mentioned, when you applied the alternate 120V to the capacitor more than something you damaged. The damage caused depends on the circuit that was subjected to a voltage that does not correspond.

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veronica

hace 6 años

but if I have the test lamp that happened, the circus did not protect me imagine if it had been accidental

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Ennio Montenegro.

44.317

hace 6 años

The lamp must be put in series with the power supply. It is in this part of the circuit that is designed for the grid voltage.
In another part of the circuit, which works with direct current, by applying an alternating voltage, which in addition to not working, the only thing you achieve is to damage the circuit and burn components.

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veronica

hace 6 años

but of course I put the lamp before connecting the device! Do not connect where I made the short ...

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Ennio Montenegro.

44.317

hace 6 años

What the lamp does is limit the supply current in series with it.
If you apply 120Vac or 220Vac to a transistor or integrated circuit, in series with a lamp, a short circuit does not occur because the lamp limits the current, but does not prevent you from burning the transistor or integrated circuit.
I do not know if you now understand why there was no short circuit, but you did damage it is not known how many components.
Regards

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filotop

411

hace 6 años



hace 6 años

hello ale vzla, in the heat sinks some aluminum parts are some mosfet check the code and look for them in datasheet, there are also some regulators in heatsink, check the diode bridge, all integrated some black pieces of three legs or more, copy the codes and look for them, after you take them off each one and try it out of the card, there are also some oscillators. . . If you did the short film in the capacitor to test the lamp in series, now you have another task, learn to repair it. Many times the capacitors internally make this type of short where the positive and the negative leg is attached, harming the main piece that feeds them, start checking the tracks and the components that you see on the route, take them off and try them, take a look Look first at all its components if they did not crack. . . and when you do these experiments wear transparent lenses. · $% & =? ª

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