Questions tagged [dimmer]

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multi channel ac dimmer for arduino

I have been looking for a simple ac dimmer circuit to use with my arduino and/or raspberry pi. I have used the TLC 5940 PWM Driver before just to control LEDs and I wanted to adapt this to controlling ...
1
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3answers
2k views

0-10V Digital Rheostat for LED Dimmer?

I have an LED light with a power supply that follows the ISO 60929 0-10V standard for dimming. The manufacturer says "the power supply is current sourcing, and is roughly 0.5mA." The following ...
6
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2answers
3k views

Dimmer to bulb control

I need to control a bulb of 220V, with different intensity light levels. I've an Arduino Uno Board, which receives a variable voltage from a Light-to-voltage converter (TSL12S) (Like a photoresistance)...
1
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0answers
7k views

arduino + optotriac based ac dimmer blinking severely

I try to build a dimmer with arduino phase control and triac. I followed the schematic from http://www.instructables.com/id/Arduino-controlled-light-dimmer-The-circuit. Now I used the software ...
0
votes
1answer
650 views

SSR not switching dimmed load

I have a system where there is a "master dimmer" (an 800W dimmer designed for household lighting). From that master dimmer, I have a few SSRs switching 40W incandescent light bulbs. The idea being ...
5
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4answers
20k views

Arduino 230v Light bulb dimming

Hey guys i have done a lot of research and testing on different circuits for 230v(50hz) or 220v light dimming, but i cant get my arduino to dim my light. This is the last thing i tried. made this ...
8
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1answer
2k views

How do the different kind of lamp dimmers work

Hooked up the scope to a dimmer expecting to see how it altered the waveform, and didn't see it do much of any difference from all the way down to all the way up. I bought an LED bulb and was told it ...
4
votes
7answers
23k views

LED lamps keep glowing when dimmer is turned off

For starters, I am not electrically capable, so bear with me. But, I did read similar questions that did not address, as far as I could tell, what I see happening (they may have, but I was too ...
3
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2answers
1k views

What good is an induction coil in a dimmer switch?

I asked about a dimmer switch, and was told one has an induction coil. What benefit is an induction coil in a dimmer switch? ZE-02S has induction coil built-in on the circuit board, so it is 5/8" ...
1
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1answer
592 views

Analog Dimmer Circuit Analysis

I am trying to analyse the basic circuit of a dimmer. I don't have much experience in AC circuits, so I am not sure how do I need to proceed. My circuit is the next: I have something like this: I ...
3
votes
1answer
74 views

Questions regarding eliminating hysteresis in ac dimmer

In the following circuit it says: “This hysteresis effect can be eliminated however, using the circuit from a detailed application note from Littelfuse shown in Fig. 6.4.4. Here the capacitor C1 is ...
2
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2answers
1k views

Multiple channel independent AC dimmer using Arduino

I want to build a 8 channel, independently controlled AC dimmer using Arduino. I have successfully tested a single channel dimmer but i am stuck in expanding it to 8 channels. The circuit I am ...
2
votes
1answer
4k views

What are the extra components in this dimmer for?

This is a four-component-dimmer (R, C, diac, triac) with an extra diode bridge and resistors R2 and R3. What are they for? I've never seen those before. It looks like the resistors are just parallel ...
2
votes
1answer
2k views

What is the rectifier's role in this AC dimmer circuit?

Here is a typical AC dimmer circuit: http://www.eleccircuit.com/wp-content/uploads/2010/09/light-ac-dimmer-120watt.jpg I just came across another variant which uses a rectifier: http://www....
2
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2answers
3k views

Problems with a back-to-back MOSFET dimmer for 230VAC

I've been trying, unsuccessfully, to dim a 60W incandescent light bulb with two back-to-back MOSFETs, similar to this web page: http://easy-electronics4u.blogspot.co.uk/2012/02/switch-ac-loads-using-...
1
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1answer
909 views

RE: RCR design in TRIAC circuit for inductive loads

I was working on a TRIAC based dimming circuit. Initially I plaaned to use a PCB mountable SSR (G3MB-202P), though this was a cheap but the device didnt allow me to do dimming with the same. I can ...
-2
votes
1answer
196 views

LED daylight dimmer 0-10Vdc controller [closed]

I have a Danlers daylight controller supplying 0-10Vdc between dark and light, I conneced this to Meanwell LCM-25 LED dimmer but find the dimmer only partially dims the LED strip (5M x 60LED/m). I ...