Talk:Thyristor

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[edit] Anything to say about thyristors?

GE called them "SCRs" for Silicon Controlled Rectifiers. --Wtshymanski 15:17, 11 May 2005 (UTC)

Added a paragraph about SCR uses as a "crowbar" in power supplies. --mgolden 16:22, 15 Nov 2005 (UTC)

The thyristor entry asks whether the thyristor entry and the Silicon Controlled Rectifier should be combined. I recommend against this. The thyristor is a broad classification of semiconductor devices, of which the Silicon Controlled Rectifier is but one. Others are listed in the thyristor entry and include Gate Turn-Off Thyristors (GTOs), MOS Controlled Thyristors (MCTs), Static Induction Thryistors (SITh), among others. It would be better to link the thyristor entry to these other entries, but describe each individually.

I agree with the above entry. Thyristors include many different devices. The solution is to expand the thyristor article. I'll offer updates in the coming months. Mak17f 17:16, 1 January 2006 (UTC

yeah keep them seperate

Could anyone specify the exact function of the gate in the thyristor? It could be better also if an external website is specified on thyristors. There is no mention of the function of the gate on the SCR page as well.

I added the function in past versions, but for some reason it was removed. :-/ Mak17f 15:35, 21 March 2006 (UTC)

I was pleased to see the cross-coupled transistor circuit appearing there and perhaps it could be mentioned that a pair of transistors will function quite well as a thyristor or even a PUT (programmable unijunction transistor, which is also a thyristor of sorts). I am also puzzled by the apparently complete omission of the SCS, or Silicon Controlled Switch, which simply brings the other base lead out of the package and have terminals therefore designated as "anode gate" and "cathode gate" -- see GE Transistor Manual, around since the Mid-1960s to at least the mid-1970s, though I haven't seen a copy since then. --Rtellason (talk) 06:48, 2 January 2008 (UTC)

Please feel free to be bold and add information about SCS devices. Don't forget to reference the GE Thyristor manual.
Atlant (talk) 13:45, 2 January 2008 (UTC)

[edit] Edit

Added the function of the gate terminal in the thyristor.Weltanschaunng 14:45, 29 March 2006 (UTC)

Uploaded the image of the thyristor with its three junctions named as J1,J2 and J3. It is requested that the image be formatted according to the wiki format. It may be replaced with a better image with the three junctions named accordingly.Weltanschaunng 12:46, 3 April 2006 (UTC)

the page has a heading "function" and also "function of the gate terminal". it would be better if they are merged under a single heading.

"function of the gate terminal" is now a sub-heading under "function" DFH 14:53, 6 May 2006 (UTC)

Added the image of the v-i characteristics of thyristor Weltanschaunng 15:31, 13 May 2006 (UTC)

Thanks for all your work!
Atlant 20:27, 13 May 2006 (UTC)

Added a remark on the definition of "Thyristor" vs. that of "SCR". Unfortunately, IEC standards are bound by very tight copyrigths so I couldn´t go any further...

Why are technical standards so strongly copyrighted? I've never understood that. They are supposed to be established in order for technicians to use them as widely as possible...

biscay 11:25, 04 Dec 2006 (GMT+1)

[edit] SCR?

is an scr apart of thyristor. —The preceding unsigned comment was added by 210.211.225.167 (talk • contribs).

An SCR is one of the most-common types of thyristor. TRIACs and DIACs are two other very-common types.
Atlant 11:45, 26 March 2007 (UTC)

How does positive gate voltage/gate current cause easier breakdown of J2? I am a EE instructor and the statement "If a positive potential VG is applied at the gate terminal with respect to the cathode, the breakdown of the junction J2 occurs at a lower value of VAK." is almost identical to the statement used in the curriculum here passed down to me, only we say gate current. I have found that this statement confuses my students as it does not make intuitive sense. Intuitively, a positive voltage on the P material would bring us farther from breakdown. I can explain the operation of an SCR using the two transistor model, which my brighter students understand and the rest are still left in the dark. Can this breakdown model be expanded upon or explained more than this? I have yet to find a satisfactory explanation for this statement. Trashmanal 18:16, 11 May 2007 (UTC)

[edit] Status of article

Why does this page only rate mid-importance in the Electronics Project? I have only a casual interest in electrical engineering, but I see references to these gadgets in vastly many contexts. Don't they deserve "high importance", and a really first-rate article?

Ambrose H. Field 18:07, 6 September 2007 (UTC)

According to the importance scale, high importance would be appropriate only if the thyristor is "well-known to a reader with casual electronic knowledge". I don't think that's the case. Foobaz·o< 18:18, 6 September 2007 (UTC)
All sorts of electronic photographic strobes used to be called "thyristor flashes". I bet lots of people know the term "thyristor" from this application. No mention of photoflashes in the article though. Whogue 07:19, 18 October 2007 (UTC)