15 Threads found on edaboard.com: Triac Application Circuit
SSR =Solid State Relay, which is what you asked for. However, as you have found, most SSR are used in AC applications where they inherently turn off when the control voltage is removed.
In a DC application, an AC circuit using a triac or SCR will not work unless you have a method of disrupting the current to turn them off. (...)
Analog Circuit Design :: 12-26-2014 18:41 :: betwixt :: Replies: 10 :: Views: 373
I am using the below circuit for one of my application. For the resistive load it is working properly. But my loads are capacitive loads(SMPS) around 20W to 40W. When I try to ON the first load, Sometimes load 2 gets on for a short time. I Thought it may due to the gate noise. So I removed the 39 Ohm resistor to the gate but still the proble
Power Electronics :: 11-18-2014 06:54 :: ckskarulai :: Replies: 0 :: Views: 232
Does this circuit work well? application : to control speed of ceiling Fan or to control brightness of a Light bulb.
Components : MOC3021 (optocoupler), BTA12 600 (triac)
Thank you !
Microcontrollers :: 10-08-2014 12:10 :: tushki7 :: Replies: 3 :: Views: 766
how to make a ssr using triac to switch 5aurrent at 230v rating. please post any circuit diagram
what is the term zero crossing detector in triac drivers such as moc3041 what is the use of it can i use moc3021 for switching application that is triggering triac
please suggest some (...)
Power Electronics :: 08-03-2014 13:17 :: raman00084 :: Replies: 4 :: Views: 473
Sorry for the question but what is the difference between the 4q and a 3q triac?
Power Electronics :: 04-11-2014 03:13 :: xxtigerxx :: Replies: 17 :: Views: 1131
I want to control AC water pump which may be having max current=10A using BTA41600B triac. And I quiet new to designing snubber circuit for such high load. And I am not getting the values for R and C and I read in application note that "R" should be a snubber resistor. What is snubber resistor? is it the High wattage (...)
Power Electronics :: 01-28-2014 23:27 :: Mrunal Ahirrao :: Replies: 4 :: Views: 810
Focusing on final real application: for sure 9W LED has some internal circuits and I'm not sure if it will be friendly for phase control.
Second thing is triac holding current. Please compare triac datasheet and load current. If you will spot any problem with operation please extend gate driving impulse to whole on-time (...)
Microcontrollers :: 01-06-2014 03:57 :: sieger :: Replies: 10 :: Views: 1843
Hi Friends i'm in need of circuit which should switch (Hot switching NOT neutral) 2500 watts inductive load from micro controller. Please explain about when and where to use snubberless triacs. What current rating triac should i use for the specified load. Thanks in advance.
Microcontrollers :: 06-25-2013 12:51 :: muthumani :: Replies: 3 :: Views: 638
Hi! Can someone help me on designing snubber circuit for triac. Our professor gave us this circuit and ask us to find a triac that can operate the motor.
I will appreciate all the help that I will get. Thanks!
Professional Hardware and Electronics Design :: 02-10-2013 21:46 :: joammee :: Replies: 3 :: Views: 687
Thanks for your prompt response. I noticed that in your schematic it says IGT <= 15mA
The triac I am using has an IGT <=35 mA
Will I have to change the resistors and capacitor values?
Analog Circuit Design :: 05-31-2009 09:36 :: AlYanes :: Replies: 3 :: Views: 702
can anyone give the details about the triac BTA12 and BTA40, and can we use triac in higher amps application based circuit. Awaiting reply
Thanks & Regards
Analog Circuit Design :: 04-28-2009 02:18 :: dayal :: Replies: 0 :: Views: 2123
I have triac circuit which I want to use to control a split phase motor. Currently I am trying to send some pulse train using a micro to switch the triac on and off but I don't seem to get anything at the output of the triac.
I am trying to based triac switching on this (...)
Professional Hardware and Electronics Design :: 09-04-2008 02:28 :: eziggurat :: Replies: 17 :: Views: 9870
You'll need a microcontroller, a triac, and a zerocross detector. Thats all. Check out microchip and atmel application notes. App. notes about motor phase control would describe the circuits more or less the same you need. Load would be lamp rather than a motor.
Professional Hardware and Electronics Design :: 08-09-2007 02:54 :: _i386sx25_ :: Replies: 5 :: Views: 2292
I want to switch (just ON/OFF no Dimming control) 20 compact flourcesent lamp using triacs (BT139 or BTA140) and an opto isolator(MOC3021). every lamp a separate triac, and i control them with a mcu(AVR).
I have tried the Typical application circuit in MOC3021 datasheet, but i have too many problems! (...)
Analog Circuit Design :: 07-13-2007 15:36 :: Parham :: Replies: 0 :: Views: 2012
Sense a zero cross @ rated frequency
as long as you have a active cross enable a triac to feed AC.
Professional Hardware and Electronics Design :: 01-10-2003 13:36 :: GrimReaper :: Replies: 2 :: Views: 1413