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What's dc-couple/ac-couple mean?

P

Paul Burke

Jan 1, 1970
0
John said:
Vcc
Mean of DC couple = -----
2

He means "meaning" of DC couple, which I believe is a cohabiting pair of
human beings of different genders.

Paul Burke
 
C

Charles Schuler

Jan 1, 1970
0
I found that same input signal of the ic require the dc-couple. what
the mean of dc-couple? pls advice..

dc coupling is with a direct path or a component that allows dc flow, such
as a resistor.
ac coupling is with a capacitor or a transformer (only ac signals are
coupled)
 
T

tokohanz

Jan 1, 1970
0
thanks for your advice.
it means that IC pin mention 'dc-coupled' allows the Vcc/2 dc flows to
the pin? that have any window of the dc if my dc is not same for few
samples?
 
P

Paul Burke

Jan 1, 1970
0
tokohanz said:
thanks for your advice.
it means that IC pin mention 'dc-coupled' allows the Vcc/2 dc flows to
the pin? that have any window of the dc if my dc is not same for few
samples?

They were pulling your pizzer. AC coupled in this sense means that the
signal is connected via a capacitor or transformer so that only the
dynamic part of the signal appears at the device's input pin.

As any fule kno.

Paul Burke
 
P

Pooh Bear

Jan 1, 1970
0
I found that same input signal of the ic require the dc-couple. what
the mean of dc-couple? pls advice..

I'd expect better use of English from someone in Singapore.

To be honest - if you *need to ask* it means you haven't understood
something *really basic*. I suggest more study and listen to the
lecturer properly.

Independent study may also prove helpful. Google is your friend.

Graham
 
D

Dr Tam

Jan 1, 1970
0
I found that same input signal of the ic require the dc-couple. what
the mean of dc-couple? pls advice..
DC coupled means the frequency response will go down to DC.
AC couples means the freq response will go down to some finite freq
determined by the time-constant of the coupling capacitor and the input
Thevenin resistance.

Tam
 
D

Dr Tam

Jan 1, 1970
0
Charles Schuler said:
dc coupling is with a direct path or a component that allows dc flow, such
as a resistor.
ac coupling is with a capacitor or a transformer (only ac signals are
coupled)
DC coupling would be mandatory if you have an amplifier to power say a DC
motor for a servo.

Tam
 
S

Spehro Pefhany

Jan 1, 1970
0
I'd expect better use of English from someone in Singapore.

He or she could be a foreign student- but how do you figure Singapore?
I see Queensland in Oz.
To be honest - if you *need to ask* it means you haven't understood
something *really basic*. I suggest more study and listen to the
lecturer properly.

Independent study may also prove helpful. Google is your friend.

Graham


Best regards,
Spehro Pefhany
 
P

Pooh Bear

Jan 1, 1970
0
Spehro said:
He or she could be a foreign student- but how do you figure Singapore?
I see Queensland in Oz.

Really ? A Singapore ISP is what I got from the IP.

Graham
 
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