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Using Arduino => General Electronics => Topic started by: sterretje on Sep 01, 2016, 07:54 am

Title: triac; what is this principle called in English?
Post by: sterretje on Sep 01, 2016, 07:54 am
English is not my native language, Another thread triggered this question.

(https://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Faseaansnijding.jpg/220px-Faseaansnijding.jpg)

What is this principle called; in Dutch, it is 'fase aansnijding'. Google translate can't be trusted :D
Title: Re: triac; what is this principle called in English?
Post by: Wawa on Sep 01, 2016, 08:21 am
Voor veel Nederlandse woorden is er geen directe of letterlijke Engelse vertaling.

I would translate it as "phase angle control".
Leo..
Title: Re: triac; what is this principle called in English?
Post by: ElCaron on Sep 01, 2016, 11:02 am
Wait, that does not capture it fully. Coming from German, where it is "Phasenanschnitt" in contrast to "Phasenabschnitt" our usually very good translation forum says "leading/trailing edge phase control"
http://dict.leo.org/forum/viewUnsolvedquery.php?idThread=379301&idForum=1&lang=de&lp=ende
The English Wikipedia article doesn't seem to go so much into detail https://en.wikipedia.org/wiki/Phase-fired_controllers
Title: Re: triac; what is this principle called in English?
Post by: MrAl on Sep 01, 2016, 03:29 pm
Hi,


A rough literal translation looks like "Phase Adjusting" :-)
Title: Re: triac; what is this principle called in English?
Post by: dlloyd on Sep 01, 2016, 05:05 pm
Phase Control (https://openenergymonitor.org/emon/mk2/switchdev)

EDIT:

Quote
Wait, that does not capture it fully. Coming from German, where it is "Phasenanschnitt" in contrast to "Phasenabschnitt" our usually very good translation forum says "leading/trailing edge phase control"
Found an example here (http://www.ledsmagazine.com/articles/print/volume-10/issue-12/features/improve-phase-cut-dimming-performance-in-led-luminaires-magazine.html). It says "Leading-edge dimmers delay the firing angle after the zero crossing, cutting out the initial portion of the AC half-cycle and conducting the end portion. Trailing-edge dimmers operate in the opposite manner, conducting the initial portion of the AC half-cycle and cutting out the end portion."

Waveform a) Leading-edge phase control
Waveform b) Trailing-edge phase control
(http://www.ledsmagazine.com/content/dam/leds/migrated/objects/features/10/12/11/1312ledsweb_design1.jpg)
Title: Re: triac; what is this principle called in English?
Post by: MarkT on Sep 01, 2016, 06:42 pm
Varying the conduction angle?
Title: Re: triac; what is this principle called in English?
Post by: septillion on Sep 01, 2016, 06:57 pm
I would indeed go for phase control or to be more precise (door het woordje aan) leading edge phase control. Some things are just longer in other languages :p
Title: Re: triac; what is this principle called in English?
Post by: MarkT on Sep 01, 2016, 07:02 pm
But it isn't actually controlling phase, so its a bit of a poor name.
Title: Re: triac; what is this principle called in English?
Post by: septillion on Sep 01, 2016, 07:10 pm
So I opened Google and found a Wiki: Phase-fired control (https://en.wikipedia.org/wiki/Phase-fired_controllers). Or, according to the article, phase cutting which I find a way worst name then all the above.

But I'm pretty sure I've seen literature that uses the therm phase control. Yep, like this Application Note of ON Semiconductor (http://www.onsemi.com/pub_link/Collateral/AND8011-D.PDF)
Title: Re: triac; what is this principle called in English?
Post by: MarkT on Sep 01, 2016, 07:12 pm
Its a form of synchronous duty-cycle control if you think about it.
Title: Re: triac; what is this principle called in English?
Post by: KeithRB on Sep 01, 2016, 09:51 pm
How about PWM? It just happens to be a bipolar sine pulse.
Title: Re: triac; what is this principle called in English?
Post by: runaway_pancake on Sep 02, 2016, 03:32 am
I like phase control or ac phase control.
An old text of mine, "Industrial Solid-State Electronics", suggests full-wave power control.