Topic: Decoupling Capacitors Explain
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Answers to Common Questions
What is the use of decoupling capacitor?
The purpose of a decoupling capacitor is to decouple one part of a circuit from another. Decouple means to provide isolation. It's used to keep unwanted interference from one part of a circuit from impacting another. Read More »
Source: http://wiki.answers.com/Q/What_is_the_use_of_decoupling_capacitor
Why inductance should be low in decoupling capacitors?
Inductance should be low in decoupling capacitors because the purpose of the decoupling capacitor is to absorb voltage transients due to suddent shifts in current due to switching activities, such as in a logic gate or high speed op-amp. If... Read More »
Source: http://wiki.answers.com/Q/Why_inductance_should_be_low_in_decoupl...
What is the difference between bypass capacitor and decoupling ca...
hi, the answer could propably be "the bypass capacitors are used with (slow varying) signals in order to filter out the high frequency noise where as the decoupling capacitors are used to filter out noise in power line, for example each ic ... Read More »
Source: http://wiki.answers.com/Q/What_is_the_difference_between_bypass_c...
More Common Questions
Answers to Other Common Questions
Coupling capacitors are used to pass AC signals in an electronic circuit while blocking DC. They are placed between the two parts of the circuit. Decoupling capacitors are used to reduce unwanted AC signals riding on DC supply circuits and ...
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Source: http://answers.yahoo.com/question/index?qid=20080515175354AAsXSBY
we use capacitor's basic property that it blocks DC and pass AC . coupling capacitor means the capacitor is connected between to circuit in series, thus isolating two circuits for dc, but ac signal is passed from one circuit to second circu...
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Source: http://answers.yahoo.com/question/index?qid=20110806084909AAkTiav
When capacitors are connected in parallel, you add up their capacitances to obtain the overall capacitance of that 'bank'. The main reason for using two capacitors in parallel when decoupling, is that they have a lower overall inductance (e...
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Source: http://wiki.answers.com/Q/Do_you_can_use_a_capacitor_in_parllel_o...
The emitter decoupling capacitor sole function is to increase gain at hi frequency
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Source: http://wiki.answers.com/Q/What_is_the_effect_on_voltage_gain_in_a...
CAPACITOR BLOCKS DC SUPPLY .THERE ARE MAINLY TWO ANSWERS 1.CAPACITIVE REACTANCE Xc=1/( 2*3.1416*F*C) , HERE THE FREQUENCY OF DC SUPPLY IS ZERO .HENCE THE REACTANCE VALUE IS INFINITY .SO IT BLOCKS THE DC SUPPLY. 2.CURRENT THROUGH A CAPACITOR...
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Source: http://wiki.answers.com/Q/Why_Capacitor_blocks_dc_and_allows_ac_e...
Potential barriers. Insulators have a large band gap (forbidden gap) such that both electrons and holes have to possess enormous energy in order to have a chance to cross the barrier to the other side (DC blocking).
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Source: http://wiki.answers.com/Q/How_you_explain_on_atomic_level_that_ca...
A coupling capacitor is used between stages in an amplifier or other circuit where you don't want the DC level in one to effect the other. A decoupling capacitor is placed across the power leads on each IC on a board to ensure a low impedan...
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Source: http://answers.yahoo.com/question/index?qid=20120305074135AAFGV0m
