Optocoupler

Sebi

Joined Sep 24, 2005
59
Hehe... i've seen only transistor output opto dual and quad.
Few triac output type: MOC3020, MOC3040. With zerocross detection: MOC3041
 

hgmjr

Joined Jan 28, 2005
9,029
For a list of devices in addition to the examples that seti provided, you can go to www.datasheetarchive.com then choose "Description Search" and enter the keywords "optocoupler" together with "triac". Then you can feast on the list. Maybe you can locate one that contains more than a single led-triac optocoupler.

Good Luck,
hgmjr
 

Thread Starter

Iodem_Asakura

Joined Sep 14, 2004
140
I read the datasheet of MOC3041, but couldn't understand it all. For example, i don't understand how the zero crossing circuit works and what is the function of this circuit on the IC. Also what is the advantage of this IC against MOC3010????

May you explain me that? Thanks
 

Sebi

Joined Sep 24, 2005
59
The advantage of zerocross-switching: noiseless switching without big spikes.
You feed a DC to LED-side randomly, but the triac will fire after the next zerocross of AC voltage (not on 320V peak value), so the current of load increasing slower.
 
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