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Triac AC Power Output Board |
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Triac AC Power Output Board. I designed this Triac AC Power Output Board to work in conjunction with the 74HC595 Discrete Digital Output Board for using the Papilio and other electronic control systems to drive small AC loads from lamps up through and including large 3 phase contactors.
Using industry standard MOC 3063 Opto-Triacs to isolate the AC Line/Neutral from the digital control grounding system, TTL level logic thru a series resistor of around 330 ohms will drive the opto-triac into an ON condition, which will allow pulses from the incoming AC line to drive the gate of the larger TO-220 case triacs, part number L2008L8 Sensitive Gate Triac or similar device. The L2008L8 is rated to 8 Amps AC, but is installed without heat sink. I recommend running it on lower loads. This board should nicely allow you to operating strings of Holiday and Christmas lights using computer control with ease.
When using this board in conjunction with the 74HC595 Digital Output Board found also on this site, rather than using a ULN2803 or UDN2981 discrete output driver, install a DIP Resistor Pack of around 330 ohms into the socket and wire the jumpers so that Pin 10 is grounded. A Bourns part number for this would be 4116-001-330. The last 3 digits state the resistance value.
If you are driving this board from an external or other form of logic control, keep in mind that you must provide a series resistor to the anode side of the MOC3063 in order to keep from blowing the LED internally. My design did not include one because the 74HC595 Digital Output Board already has these Bourn resistor packs between the shift register output and the MOC3063 opto-triac.
Please feel free to contact me with comments and questions!
Photos:
Click for larger image.
Datasheets
Where can I get these?
I've made a prototype run of 3 of these boards.
If enough interest is shown, I will make a production run, I expect the cost of the bare board to be around $19.00 USD plus shipping for the bare board.
Please contact me if you are interested!
Disclaimer: - There was not enough room on the board to include a fuse.
You are STRONGLY advised to fuse your AC voltage incoming feed to this board, and fuse your loads as well if they aren't already so.
There is NO UL Listing for this board.
By using this design you agree to assume any and all risks involved, and also to hold me and Jack Gassett of Papilio and everyone else on the planet beside yourself harmless from any and all damages you may incur.
This is AC line power, folks. 120 Volts alternating current.
It's dangerous crap and not for the novice to play with.
It is quite deadly.
If you kill yourself or someone, burn your house or your entire town to the ground, you are on your own.
I am not responsible, because I told you so right here.
MOC3063 Opto Triac