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Re: if frequency of electric is 50 Hz, how many time flash l
Hi there,
you are alsking absolutly right, I was wrong, a a 50 hz contain 50 ful sine waves, so its 100 peaks,
regarding the led, well most of the circuits that contains a led indicator connected directly on 220v suply is simply a...
led may operate at a voltage less than 3 so dont forget to put a 3 K ohms resistor in series with the red led. and for the blue led, there is no need to do that, you will need an extra cct to detect the open cct, i believe that when the red led does not work, is a good indication the you have an...
Re: Power supplies
regarding the power suply, we can interprit the problem in another way.
In most power suplies there is an ac transformer inside that reduces the mains to a lower as voltage. a transformer contains 2 coiles, the first that work as a magnetic generator that changes with time...
Re: if frequency of electric is 50 Hz, how many time flash l
this is not aneasy quesiton, now if we are talking about a bulb which radiates light due to heating an element, well, i believe that it will not have a sufficient time to cool down 50 times a second, it will cool a little bit which is...
for me, i studies electronics and communication engineering and now i am studying the MSc in communication engineering, in general, the trend of the job market is in the direction of communication engineering. I believe that studying electronics and communications will give you a very good idea...
the TV receives an analog signal of colors and synch signal while the computer monitor receives a digital signal, each pixle of color is displayed in its right position, you can check for your self, connect your computer to a TV (if you have the proper connection), i bet you can hardly read the...
Hi my frind, a very gooooood question.Actually the short circuit may not happen because the filament resistance of the bulb increases as its temperature increases.
As it increases, the current decreases and the filament stays at a certain heat level,its a kind of balance state
hope every thing...
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