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Why does the television need to be connected to the isolation transformer before it is connected to the power source?
Television sets do not need to be connected to isolation Transformers for normal operation. However, most modern sets do not have power transformers, which means they run directly off of the line. In that case, you do need an isolation transformer to protect yourself from electrocution during repair.
What else can I help you with?
Why need to vacuum in transformer chamber before filling transformer oil and how long need to vacuum?
we need vacuum to remove moisture from tank
What kind of transformer is used to change the voltage of electric current in transmission lines before it enters houses in a neighborhood?
It's called a 'distribution transformer', as opposed to a 'power transformer' which is used in the transmission and primary-distribution electrical systems.
What is the difference between protective current transformer and metering currrent transformer?
Usually nothing. The only difference is what it is connected to and operates. The leads from the current transformer could power a meter for remote indication or a protective relay to trip the system offline.
Why transformer is used before conected any semiconductor device?
because it is necessary to provide an over load protection ,surge protection,etc....hence an transformer is used...( particularly isolated transformers)
What is the procedure to polarity test a 3 phase transformer?
A 'polarity test' is conducted on a single-phase transformer, not a three-phase transformer (or transformer bank). The polarity of a single-phase transformer being important if two transformers are to be connected in parallel, or three transformers are going to be connected to form a three-phase transformer bank.'Angular displacement' is, to a three-phase transformer, what 'polarity' is to a single-phase transformer. So you really should be asking about angular displacement, rather than polarity. Angular displacement, or 'phase displacement', is the angle by which the secondary line voltage lags the primary line voltage.Angular displacement can be determined either by drawing a phasor diagram of the three-phase connection and measuring it, or by looking up the connection in a vector-group chart/table -you would nor normally 'calculate' angular displacement.
Who or what was the first transformer action figure made before the tv shows?
Bumble Bee by Takara I believe in 1976.
What is the advantage of using isolation transformer in a 220 volt 2wire AC system before load?
The isolation transformer provides a electrical mean to separate the source and load. Also, The isolation transformer will protect against surges and spikes as the primary winding due to it's magnetic property will impose more resistance (reactance) to higher frequencies such as spikes and such. where Xl is the impedance (resistance) of the primary winding. In this equation, one can see that higher frequencies increast the impedance of the coil proportionally to the rate of frequency.
What is a TV amplifier used for?
A TV amplifier is commonly used to make the sound larger and the picture clearer. I would make sure that you have it connected properly before using it.
How has tv brought the world closer?
TV has definitely changed the world. People are more connected now than they were before TV. Also, news travels much faster due to television.
How should I properly wire a doorbell transformer to ensure it functions correctly?
To properly wire a doorbell transformer, connect the transformer's low-voltage wires to the doorbell system's power input terminals. Make sure the wires are securely connected and insulated to prevent any short circuits. Test the doorbell to ensure it rings properly before finalizing the installation.
Is HDMI HD on your tv?
HDMI is a connection plug on the back of HDTVs to allow other devices to be connected to the HDTV. Before HDMI they used S Video and Component connections to connect devices
Do they have Burger King transformer toy?
I think they did before.
Did china follow a policy of isolation before or after Japan?
after
How good is the asus transformer tablet?
The asus transformer is not a good tablet. There have been many studies that show how the asus transformer tablet causes cancer. I would read more about the asus transformer tablet and the risks before taking this product.
What does apple TV do?
Apple TV is a small to medium box (that is white or black) which is connected to your TV. If you can't find any CD's that don't show what you want to see, a series that you see in order and on some movies the you watch on YouTube is blurry then you can watch it Apple TV. Apple TV is where the people show movies. Before you purchase the movie , you can see movies.
Why need to vacuum in transformer chamber before filling transformer oil and how long need to vacuum?
we need vacuum to remove moisture from tank
Before replacing a burned out lamp in an installed light fixture?
isolation
