Questions tagged [dimmer]

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2
votes
1answer
674 views

What happens when you dim a wall wart?

I am hooking a wall wart to a plug on a dimmer switch which is hooked to some LEDs and a resistor to create a LED "lamp." What will happen when I dim the switch? Will it reduce the voltage? The ...
2
votes
2answers
1k views

Dimming USB Led Lamp

Currently I have a project that consist in the following: We have 2 USB Led lamps. (e.g 13 leds, 5V, ~200mA) To these lamps, we would like to control the intensity of the light, through a Raspberry ...
1
vote
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 ...
1
vote
1answer
140 views

Is AC Dimmer on Vector Board trouble?

I'm building an AC Dimmer based on this circuit (linked) and am considering using a Vector board instead of making a PCB. Does anyone foresee any issues with this? Particularly regarding 120v ...
4
votes
2answers
6k views

How to Dim HID Lamps

I am building a street lamp controller that should be able to set a street lamp to on, off, or dim state. I have successfully built an incandescent lamp dimmer (phase dimming - using zero cross ...
5
votes
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 ...
5
votes
2answers
1k views

Can electronics be damaged by plugging into a lighting dimmer circuit?

So my stupid room is wired so all of the lower receptacles are driven from the electronic wall dimmer. Stupid me plugged in my brand spanking new brother laser printer into the lower receptacle. It ...
6
votes
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)...
0
votes
1answer
4k views

is there any spice model for optoisolator triac driver circuit?

I have to design a phase angle dimmer using a triac. For this, I have read How do I drive a TRIAC from a microcontroller (for low voltages)? This forum really turns out to give me a good solution .....
5
votes
4answers
11k views

Building AC dimmer - digitally controlled

I'm looking for help about making a design for a digitally controlled AC dimmer to control some AC lamp light intensity. I've searched for ideas and found these: http://www.inmojo.com/store/inmojo-...
8
votes
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 ...
3
votes
1answer
315 views

Can anyone identify this component?

I'm trying to solder together a small LED array with a dimming knob out of a bunch of old parts I have laying around, but I can't seem to identify how to wire this component: The two connectors at ...
1
vote
1answer
388 views

Help with connecting electromagnet to dimmer

I have an electromagnetic powered off a AA battery. Is there some kind of dimmer switch or similar item that would allow me to control the amount of power going to the electromagnet?
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 ...