Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

what is DC and AC coupling?

Status
Not open for further replies.
C

cheesent

Junior Member level 1
Joined
Sep 4, 2006
Messages
17
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Activity points
1,356
ac coupling vs dc coupling

To what I know, DC coupling can be used for both AC and DC.
AC coupling is used for AC only.
how is the circuit look like when DC or AC coupling was used?
 

ac coupling dc coupling

As you said DC coupling allows both DC and AC signals through, while AC coupling accepts only AC signals.
Fig1a shows a waveform containing both AC and DC. If the oscilloscope is DC coupled, then the waveform is displayed as drawn in Fig1a. If the oscilloscope is AC coupled, then the DC portion of the waveform is blocked and only the AC portion is displayed as shown in Fig1b.
 
  • Like
Reactions: noels

    N

    noels

    Points: 2
    Helpful Answer Positive Rating
ac coupled dc coupled

Hi,

Thanks for your answer.
For AC coupling, capasitor is necessary while DC coupling is direct conncetion (need nothing?).
Then, why we call coupling?
 

    V

    Points: 2
    Helpful Answer Positive Rating
dc coupling vs ac coupling

One meaning of coupling is linking, thats why.
 
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top