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BT139 & MOC3063
- 09-10-2006
September 10, 2006, 12:07 pm

I have desined a circuit with a Triac (BT139) to swith an AC Motor that
works with 220 VAC.
(Go to this link to see my Circuit http://hojabri.741.com/BT139.JPG )
I have used a MOC3063 Optocoupler with Phase Detector capabilities. I
seems work fine. but after some times (maybe some hourse) after running
the circuit fails and the motor will vibrate and will not rotate. this
problem will be solve if i change
the MOC3063 with new one. but the same will happen with the second ic.
my question is , should i
select another range of resistors with the MOC3063 ?

Re: BT139 & MOC3063
"Rheilly Phoull"

** Huh ???????
You have weird ideas about how opto-triac triggers work.
They do not generate current internally, you know.
Have a look at page 6 on this PDF datasheet.
http://www.fairchildsemi.com/ds/MO/MOC3063-M.pdf
....... Phil

Re: BT139 & MOC3063
Remove R2 then connect the gate of the '139 to where r2 was connected on the
opto isolater, no other connection to the line required.
--
Cheers ............. Rheilly P
***** You really are a fool ,aren't you??
Cheers ............. Rheilly P
***** You really are a fool ,aren't you??
We've slightly trimmed the long signature. Click to see the full one.

Re: BT139 & MOC3063
"Rheilly Phoull"

** There is no possible way that is true.
R2 simply limits the max trigger current to under 1 amp.
Maybe you mixed up the T1and T2 terminals.

** The OP has posted the same naive message on three NGs.
Got some good replies.
So far responded to none.
....... Phil

Re: BT139 & MOC3063

well it works fer me on a moc3021 and I dont see you blokes coming up with
mush other than the usual crap and no help for the OP
--
Cheers ............. Rheilly P
***** Wota really fool wanker,you really haven't got a clue,have you?
Cheers ............. Rheilly P
***** Wota really fool wanker,you really haven't got a clue,have you?
We've slightly trimmed the long signature. Click to see the full one.
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