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aansnijding

English translation: leading edge (or forward) phase control

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Dutch term or phrase:aansnijding
English translation:leading edge (or forward) phase control
Entered by: Ken Cox

10:39 May 11, 2006
Dutch to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng / Domotica
Dutch term or phrase: aansnijding
Still with this text. Now I found this:
"Er zijn dimmers voorhanden die rechtstreeks op de bus geplaatst kunnen worden, zowel aansnijding als afsnijding." "...open or close????"

Thank you,
Francisco
Francisco Mar Rubio (X)
Switzerland
Local time: 21:45
leading edge (or forward) phase control
Explanation:
This refers to one of two options for cutting the sine waveform in a dimmer circuit -- leading-edge (or forward) phase control. The other is afsnijding (trailing-edge or reverse phase control).

sample refs (the latter two have illustrations):

Het verschil tussen fase aansnijding en afsnijding is het volgende:

Leading edge (aansnijding):

Trailing edge (afsnijding):

Goedkope dimmers gebruiken fase-aansnijding en zijn geschikt voor induktieve en resistieve lasten, de duurdere fase-afsnijders zijn geschikt voor resistieve en capacitieve lasten (zoals electronische halogeen trafo).
http://www.wetenschapsforum.nl/viewtopic.php? t=6708&view=next

Forward phase control (SCR)

The basic SCR dimmer will remain the choice for budget-conscious dimming installations for the foreseeable future. The simple technique of varying the switch-on point of the lamp current each half-cycle is established in tradition and is very cost effective.
http://www.silentdimming.com/tech_forwardphase.asp

Reverse phase control

The commercially-practical implementation of reverse phase dimming uses IGBT transistors. A transistor differs from an SCR in that it can be controlled to gradually vary the current, not just to switch it on. By gradually turning off the current rather than turning it on, a reverse phase angle dimmer reduces the filament noise in a similar fashion as a forward phase SCR dimmer without the need of a choke.
http://www.silentdimming.com/tech_reversephase.asp
Selected response from:

Ken Cox
Local time: 21:45
Grading comment
Great. A lot of information you gave me. Thanks a lot
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +5leading edge (or forward) phase control
Ken Cox


  

Answers


26 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +5
leading edge (or forward) phase control


Explanation:
This refers to one of two options for cutting the sine waveform in a dimmer circuit -- leading-edge (or forward) phase control. The other is afsnijding (trailing-edge or reverse phase control).

sample refs (the latter two have illustrations):

Het verschil tussen fase aansnijding en afsnijding is het volgende:

Leading edge (aansnijding):

Trailing edge (afsnijding):

Goedkope dimmers gebruiken fase-aansnijding en zijn geschikt voor induktieve en resistieve lasten, de duurdere fase-afsnijders zijn geschikt voor resistieve en capacitieve lasten (zoals electronische halogeen trafo).
http://www.wetenschapsforum.nl/viewtopic.php? t=6708&view=next

Forward phase control (SCR)

The basic SCR dimmer will remain the choice for budget-conscious dimming installations for the foreseeable future. The simple technique of varying the switch-on point of the lamp current each half-cycle is established in tradition and is very cost effective.
http://www.silentdimming.com/tech_forwardphase.asp

Reverse phase control

The commercially-practical implementation of reverse phase dimming uses IGBT transistors. A transistor differs from an SCR in that it can be controlled to gradually vary the current, not just to switch it on. By gradually turning off the current rather than turning it on, a reverse phase angle dimmer reduces the filament noise in a similar fashion as a forward phase SCR dimmer without the need of a choke.
http://www.silentdimming.com/tech_reversephase.asp

Ken Cox
Local time: 21:45
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 76
Grading comment
Great. A lot of information you gave me. Thanks a lot

Peer comments on this answer (and responses from the answerer)
agree  Dave Calderhead
11 mins
agree  D.K. Tannwitz
19 mins
agree  Jack den Haan
23 mins
agree  writeaway: ;-)
27 mins
agree  Johan Venter
1 hr
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