You have new items in your feed. Click to view.
Question and answer
Difference between triac and diac
This question has not been answered. Can you answer it? Please add your answer below ...
Question
Asked 8/23/2009 10:17:07 AM
Updated 8/23/2009 4:53:36 PM
2 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments
The DIAC is a trigger diode that conducts current only after its breakdown voltage has been exceeded momentarily. When this occurs, the resistance of the diode abruptly decreases, leading to a sharp decrease in the voltage drop across the diode and, usually, a sharp increase in current flow through the diode. The diode remains "in conduction" until the current flow through it drops below a value characteristic for the device, called the holding current. Below this value, the diode switches back to its high-resistance (non-conducting) state.

A TRIAC is an electronic component approximately equivalent to two silicon-controlled rectifiers (SCRs/thyristors) joined in inverse parallel (paralleled but with the polarity reversed) and with their gates connected together. This results in a bidirectional electronic switch which can conduct current in either direction when it is triggered and thus doesn't have any polarity. It can be triggered by either a positive or a negative voltage being applied to its gate electrode. Once triggered, the device continues to conduct until the current through it drops below a certain threshold value, the holding current, such as at the end of a half-cycle of alternating current (AC) mains power.
Added 8/23/2009 10:52:54 AM
Thank you for using Weegy. Ask us anything 24/7! Be sure to tell all your friends.
Added 8/23/2009 4:53:36 PM
Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
SCR
Weegy: do you have a question for me? I don't know what SCR means. (More)
Question
Expert Answered
Asked 8/23/2009 10:14:26 AM
0 Answers/Comments
SCR
Weegy: do you have a question for me? I don't know what SCR means. User: Difference between triac (More)
Question
Updated 8/23/2009 4:54:28 PM
2 Answers/Comments
A silicon-controlled rectifier (or semiconductor-controlled rectifier) is a four-layer solid state device that controls current. The name "silicon controlled rectifier" or SCR is General Electric's trade name for a type of thyristor. The SCR is controlled by a logic gate signal.
Added 8/23/2009 10:59:31 AM
Thank you for using Weegy. Ask us anything 24/7! Be sure to tell all your friends.
Added 8/23/2009 4:54:28 PM
25,789,423 questions answered
Popular Conversations
removal Which of these is the free morpheme in this ...
Weegy: In the word "removal," the free morpheme is mov(e). User: The new English word emoticon can be broken down ...
7/26/2016 11:27:16 AM| 3 Answers
The plurals of nouns ending in s, x, z, ch, and sh are formed by ...
Weegy: The plurals of nouns ending in s, x, z, ch, and sh are formed by adding -es. User: The plural of a noun ...
7/26/2016 5:55:54 PM| 3 Answers
Weegy Stuff
S
P
L
Points 561 [Total 1311] Ratings 2 Comments 541 Invitations 0 Offline
S
L
P
P
P
Points 253 [Total 3001] Ratings 0 Comments 253 Invitations 0 Offline
S
P
Points 224 [Total 483] Ratings 1 Comments 214 Invitations 0 Offline
S
Points 214 [Total 635] Ratings 1 Comments 204 Invitations 0 Offline
S
Points 88 [Total 227] Ratings 0 Comments 88 Invitations 0 Offline
S
L
P
P
P
Points 70 [Total 3774] Ratings 0 Comments 70 Invitations 0 Offline
S
Points 21 [Total 71] Ratings 2 Comments 1 Invitations 0 Offline
S
1
L
L
P
R
P
L
P
P
R
Points 8 [Total 12606] Ratings 0 Comments 8 Invitations 0 Offline
S
L
Points 3 [Total 1766] Ratings 0 Comments 3 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.