27 Threads found on edaboard.com: Triac bt136
I have done a light dimmer cum fan regulator circuit using PIC.
regulation by varying firing angle.
Using optocoupler MOC3021 to drive the triac bt136.
It is working ok,But the triac becomes leeky frequently. triac starts conducting slightly without any drive the load (...)
Microcontrollers :: 21.10.2005 04:39 :: UroBoros :: Replies: 17 :: Views: 14375
wat s difference between bt136-600 and bt136-600d
Electronic Elementary Questions :: 23.10.2010 04:57 :: qbitsun :: Replies: 1 :: Views: 1219
NO ! you cannot use a ULN2803 for controlling a mains triac there is no isolation, use a proper opto isolator, many circuits around.
Microcontrollers :: 12.12.2012 04:40 :: wp100 :: Replies: 1 :: Views: 382
I had a problem driving a digital triac from my pic microcontroller. I've been using +12vDC relays to control 220vAC loads. Christmas is coming and I want to build a simple light sequencer for my Parol composed of 8pcs of 10w 220vAC incandescent lamp. I'm sure that relays are not suitable for this application.
Our local electronic store
Microcontrollers :: 28.11.2006 18:39 :: emavil :: Replies: 13 :: Views: 15716
you first test this circuit ........ for under standing the basics of the triac........
see any power electronics course book
Analog Circuit Design :: 29.12.2006 01:41 :: ashad :: Replies: 5 :: Views: 2082
I made this circuit to be a light dimmer but it did not work. I use bt136 for the SCR and MOC3022 for optocoupler.
Can you tell me what is the problem? may be I should use another SCR.
I have tested this circuit with bt136. It worked.
Most probably you must have interchanged MT1 and MT2 terminals of triac and tha
Robotics and Automatics Forum :: 17.02.2007 14:34 :: CMOS :: Replies: 8 :: Views: 1908
How to control speed of a fan (230V) using logic level sensitive triac bt136D with a PIC uC (16F72).
Well familiar with PIC
Using CCS Compiler
Just Ideas are enough (Coding is not an issue)
Thanks in advance
Microcontrollers :: 06.02.2007 12:23 :: Gladis :: Replies: 8 :: Views: 9427
Is there a direct subsitution from a U.S. company for a bt136-600E triac ??? I'm trying to repair a burnt-out touch dimmer lamp without spending a fortune ( meaning a 50 to 100.00 minimum order for 1 triac ). Thanks !!! :-)
Electronic Elementary Questions :: 18.11.2008 22:57 :: munaim :: Replies: 0 :: Views: 1495
Your circuit misses the RC snubber that are required in the MOC30xx datasheet for inductive loads. Depending on the motor inductance, you have a high risc of retriggering the opto triac by the commutation dV/dt without a control signal. Use the suggested circuit and try again.
Hobby Circuits and Small Projects Problems :: 06.11.2009 07:40 :: FvM :: Replies: 19 :: Views: 15094
it was suggested to connect a serial 100nF + 100Ohm "complex" directly to the triac, also Leg1 & Leg2...
Remember pls; "control is better"...:-)
Analog Circuit Design :: 04.06.2010 11:29 :: karesz :: Replies: 3 :: Views: 1862
i have a 2 main line of 220 Volt AC Supply.i want to control it and i want to work
1 line at a time and 2nd is off while 2 is working than 1 line is off.i use a
triac in the phase of the both line which are parallel.
we give a 4 volt +ve only one gate at a time and 2nd is off.
plz tell me this diagram is true and in this way can we handle i
Analog Circuit Design :: 03.07.2010 08:28 :: atifbuitms :: Replies: 5 :: Views: 940
can we use triac like bt136 to control a dc bulb of 6v or 9v or 12v . for light dimmer.
Analog Circuit Design :: 08.09.2010 07:58 :: welove8051 :: Replies: 8 :: Views: 1631
I am not using a microcontroller but a 555 timer as a monostable and a decade counter 4017B together with an opto-isolator NTE3042 and triac bt136.
i think u want microcontroller based Remote controlled Fan regulator ? i am right ?
Microcontrollers :: 21.03.2011 13:31 :: sahu :: Replies: 9 :: Views: 3205
I am driving a heater wire from triac bt136 which previously was controlled by a relay.
Heater wire resistance : 78 Ohms
Heater wire Inductance: 0.47mH (measured by digital multimeter---UT70A)
Heater Capacitance: 0.15uF (measured by digital multimeter---UT70A)
Heater wire current: 2.55 Amps (RMS) at 220V(RMS)
I just have to sw
Power Electronics :: 25.09.2011 12:11 :: Sajjadkhan :: Replies: 19 :: Views: 7125
Does anyone uses the NI Circuit Design Suit 11.0?????
I am having a problem in designing a voltage regulator with a bt136 triac.... I have decompiled the circuit by reading the values of components & connections from a fan regulator circuit... My readings are correct and I designed the same circuit in NI Circuit Design Suit 11....
Analog Circuit Design :: 14.01.2012 12:51 :: Genovator :: Replies: 0 :: Views: 853
I am trying to built the light dimmer using Microcontroller and i am using MOC3011 and triac bt136 and Zero crossing detector using Transistor BC847
Can any one give me the source code for Zero crossing detector in C
Microcontrollers :: 07.08.2012 01:56 :: amsbhole07 :: Replies: 3 :: Views: 1092
With internet help I made one triac circuit to switch on my 230V AC portable vacuum cleaner.
It works with some issue. When switch on the socket power, though I have not given 5v power at MOC side, the load gets ON for about ? second and turns off.
bt136 600D , MOC3062 , 700 watts 230v
Hobby Circuits and Small Projects Problems :: 03.04.2013 15:39 :: venkir :: Replies: 7 :: Views: 739
i need optoisolator for my circuit design,i do need the input as the neon bulb and the out put anything,transitors or triac or....i do care about the input becaus i have ac voltege and around 90v ac.
Analog Circuit Design :: 18.02.2004 12:59 :: simo :: Replies: 6 :: Views: 1984
use electronic fan regulator for the same. see the concept. use bt136 triac based circuit.
Electronic Elementary Questions :: 11.09.2007 06:44 :: suru :: Replies: 3 :: Views: 1682
I want to drive a 230V AC load from a triac whose gate is fired by MOC3020.
The circuit diagram is at
as per debugging done uptill now, I found that output of MOC3020 isn't able to drive the triac gate. Currently I am using bt136. suggest something else.
Analog Circuit Design :: 04.12.2008 15:41 :: sharadbags :: Replies: 9 :: Views: 5990
can any 1 plss help me tht which triac should i use if i m controlling 12v dc motor intead of 220v bulb.
rmember i m using bt-136 for bulb as a 220v dc bt bt136 is not working for 12v dc motor.
kindly i m new help me plsss.
here is the crkt dgrm working with 220v bulb bt not for 12v(12v from step down transformer) dc motor
Power Electronics :: 15.10.2009 13:19 :: bilalxp :: Replies: 3 :: Views: 3477
I want to build a triac dimmer by using Transformerless power supply. I am using common hot power supply. i am using PIC microcontroller to drive the Gate of triac bt136.i am aso having the Zero cross detection by using software problem is the bulb is not glow.i checked in simulation there is correct Pul
Electronic Elementary Questions :: 22.07.2011 09:21 :: manikandan123 :: Replies: 21 :: Views: 1261
Hi, everyone... i am new here, i doing my college project and i found that i cant get MAC223A triac, can anyone tell me what triac can i replace for this triac... thanks :razz:
Analog Circuit Design :: 25.09.2011 10:40 :: alpha91 :: Replies: 5 :: Views: 398
I am trying to use a triac to turn on and off the mains connection to a load. This load is directly connected to the mains (without a transformer) because it is a Cockroft Walton Ioniser (with capacitors and diodes). I'd like to use the triac with this configuration:
Power Electronics :: 29.03.2012 09:14 :: jumpman :: Replies: 30 :: Views: 6672
can any one help me schematic of "zigbee-wireless mesh networks for building automation and control" ?? i am using ARM7 that is lpc2148, MAX232 , zigbee module , triac moc3020 ,bt136 and the loads....... please help me its very urgent.......
thanks in advance
Heuristic methods, Machine Learning, AI, and Soft Computing :: 31.03.2013 05:52 :: nikhila :: Replies: 0 :: Views: 742
u can use MOC3021 optocoupler with any triac like bt136 for phaseangle control. But this method u can use before the 12V DC convertion at the high voltage AC side.
or u can use PWM method at 12V side.
the dimmer circuit I'm using uses a potentiometer so I just need something to operate the potentiometer from a distant
can u po
Hobby Circuits and Small Projects Problems :: 10.05.2013 07:39 :: jpsganesh :: Replies: 7 :: Views: 823
You need to use resistor for diode to limit current. Maybe you kill diode, replace opto triac.
First check optotriac with 220V load only with 5V source without uC. Use power source of 5V and 220V for optotriac led.
Microcontrollers :: 21.05.2013 05:04 :: tpetar :: Replies: 4 :: Views: 791