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Questions tagged [dimmer]

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1answer
19 views

How to: Led Dimmer switch to on/off switch

I have a led strip with a wonderful no touch dimmer on the bottom of the kitchen cabinets. What i would like to do is to "link" the inner lighting of the cabinets to the same switch, in a manner that ...
0
votes
2answers
48 views

TRIAC and Driver is heating up

I am trying to do a dimmer and below is my schematic. Before doing an actual PCB, I did a proto on a veroboard and the circuit works perfectly. Now when I did a PCB and got it back from the ...
0
votes
1answer
59 views

How to choose the right potentiometer for dimming a LED

I have a reading lamp from IKEA. It has a bright LED. Too bright for my taste. So I inspected it and it is composed of a DC power supply unit that outputs 7V and a maximum of 3W. The LED unit is ...
0
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3answers
118 views

Calculate Angle for Triac Phase Control

Triac-based phase control of the mains power into resistive load. According to this post, https://www.physicsforums.com/threads/how-to-calculate-rms-voltage-from-triac-phase-angle.572668/#post-...
0
votes
1answer
31 views

Can I use X9C102 digitally controlled potentiometer on AC voltage?

I am working on a project to make a dimmer using the triac and a photocoupler, and I want to know if I can use a digital potentiometer to regulate the intensity of the light. I know it works for ...
0
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2answers
24 views

LED dimmer/controller: preserve state after loss of power? [closed]

Summary: Are there LED Dimmers that are "always on" and whose settings survive loss of power? Details: I am considering a more or less standard led-strip set (consisting of power transformer/driver,...
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0answers
67 views

LED Copper wire string lights Dimming DIY

I am doing a DIY project for a small indoor garden lighting using LED fairy lights, (the ones which use SMD LEDs dipped in a resin and soldered to a laminated copper wire) Since these are laminated ...
3
votes
2answers
440 views

Would it damage a tile saw if I used a a dimmer switch on it? [closed]

It's a 10 inch Ridgid wet tile saw from home depot. I have a dimmer light switch, and I was hoping to use it to slow the saw down about half the regular speed. Would doing this damage the motor or ...
1
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1answer
52 views

Decreasing the surge power of the AC loads

I have a pure sine wave inverter 12v to 220v AC, its continues output power is 600VA and the surge power is 1130VA, I want to running my 200W fridge, but unfortunately my fridge surge power is a bit ...
0
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1answer
70 views

Potentiometer is Heating [closed]

I have this light dimmer circuit, when I plug it into the AC, the dimmer works fine but I noticed that the heat in potentiometer is increasing, is there any workaround to fix this problem?
-1
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1answer
34 views

LED Dimmable 2 of the 8 turn off when others are dim [closed]

So I just had Integrated LED Recessed Retrofit Ceiling Light Fixtures installed on a Lutron Toggler 150-watt Double Pole 3-way White Toggle Indoor Dimmer (rated for LED lights). When the dimmer is ...
0
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2answers
56 views

how to convert a PWM AC dimmer circuit from normally-closed to a normally-open one?

Hi, As you see in schematic, the circuit is a normally-closed AC dimmer. Therefore when the connection between microcontroller - which produce pwm - and mosfet get halted, the lamp will be always on ...
1
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1answer
57 views

Why does this dimmer switch have reduced wattage capability for LED / CFL bulbs?

The Lutron "Maestro C•L" dimmer has different wattage ratings depending on the type(s) of bulbs being controlled. Its an electronic dimmer. Specifically, when 100% incandescent or halogen it can ...
-2
votes
1answer
28 views

Convert a 100-277V dimmer to 1-10V [closed]

I'm trying to use the following dimmer: https://www.smarthome.com/switchlinc-dimmer-insteon-2477dh-remote-control-dimmer-dual-band-high-wattage-white.html with these lights https://www.eledlights....
0
votes
1answer
72 views

TRIAC not turning off correctly

I am using this circuit with a BTA16 TRIAC: The load is a 110/12 V transformer. I am getting spikes in the output. Note: CH1 is the secondary of the transformer (load), CH2 is the MOC3021 input. ...
0
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2answers
150 views

How to dim my dc push button led switch that is too bright?

Attached is a screenshot of my button and the dimmer I found, it’s getting a 12V source. I figured using wiring the pwm dimmer like the one shown will work. Please let me know your suggestions on if ...
0
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1answer
269 views

Dimmer with zero-crossing circuit and TRIAC

I want to make a dimmer to control a huge power resistance of 700W. For this, I made a circuit that detected when the wave reaches zero (the circuit above the figure) and another that controls the ...
0
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2answers
63 views

What would I use to regulate raise/lower temperature in an AC 40 watt device's heating element? [closed]

It's for a resin burner--frankincense etc--that doesn't have a temperature regulator so it burns too hot. I don't need to know an actual temperature, just to be able to raise/lower the temp'. Thanks.
0
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1answer
362 views

COB LED Dimming via Poentiometer?

I want to create a dimmer for high power LED light's i'm building for video work. I'm using CREE CXB3590 chips, which have run at 36V with a forward current of 3.6A. I am powering these through a 150W ...
-3
votes
1answer
114 views

LED dimmer between current supply and drivers [closed]

I want to build a bathroom mirror frame with integrated LED spot lights. Current comes out of the wall, there are already two on/off switches which control that single outlet. That is why I „believe“ ...
0
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0answers
168 views

Help building triac dimmer switch circuit

I'm trying to build a dimmer switch circuit. I'm terrible at reading circuit diagrams and then bread boarding them. Here is a pic of the diagram and two pics of my circuit. The light comes on full ...
0
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3answers
501 views

Can I use dimmer voltage regulator for single phase multi speed AC motor?

I have a swamp cooler motor which is single phase 3 speed motor, 1/7 HP i.e. 106 watts. I wish to reduce its speed (rpm) by 50%. Can I use this dimmer circuit to do so? This dimmer regulator is rated ...
0
votes
1answer
148 views

triac dimmer switch failure mode - flickering

Background About the switch In the UK dimmer switches with modules that look like this are quite popular: https://ssli.ebayimg.com/images/g/7f0AAOSwMvtZOrsC/s-l640.jpg It's a mains light dimmer, ...
0
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2answers
65 views

Dimmer buzzing, lights flickering [closed]

Got an issue with my lights and a dimmer. I got a room with 4 lights in it (6W LED panel lights) and a 60-600W dimmer. Somewhy, the lights from time to time flicker and the dimmer is buzzing all the ...
0
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2answers
67 views

Dimmer switches and analogue voltmeters

I want to make a steampunk type table lamp. I want to use a dimmer switch and an old fashioned analogue AC voltmeter to display the "voltage" as a feature/gimmick. This displayed voltage doesn't need ...
0
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2answers
238 views

Debugging a dimmer circuit (TT6061A) [closed]

I've got a touch sensitive table lamp that dims to three different stages (off, low intensity, mid intensity, full intensity). It has stopped working like that and now just being powered to the mains ...
1
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4answers
505 views

Why do lights get brighter when I turn on the hair dryer?

Intuitively, the hair dryer sucks power out of the wires, causing a voltage drop, causing the lights to dim. But the opposite happens: the lights get brighter. These are LED bulbs. It is the ...
0
votes
1answer
77 views

Detect if the load is present on this circuit

Is there a way to detect if the load is conected on the circuit above? (The other load should be connected to the F Pad, sorry for the mistake).
0
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1answer
52 views

How does a (halogen) wound transformer dimmer work?

I'm replacing a broken halogen dimmer and I noticed that it has inside a wound transformer, but it is connected only to two leads: "input" and dimmed "output". It also has some more electronic ...
1
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1answer
84 views

Why triac output goes higher than line 230-240 voltage in AC dimmer circuit?

I am using AC dimmer circuit using arduino. circuit is working normally but the only problem is about voltage. as the dimmer circuit varies dimming,the output voltage also increases and decrease. Line ...
0
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0answers
428 views

How to determine resistor and capacitor values in diac-triac dimmer circuit?

Background I'm trying to design a simple dimmer based on this circuit (source, PDF): Questions: How do I determine the appropriate R1, R2 resistor (and capacitor) values? What is the relationship ...
1
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1answer
70 views

Flickering 230VAC Halogen dimmer

After using Stackexchange for several years now for solving all my Python, LaTeX, math, electronics, engineering and life questions, I have finally come up with a problem I cannot find an answer to. I ...
0
votes
1answer
129 views

Is this dimmer compatible a DC 12v power supply? [duplicate]

This power supply is used for LED strip lights I recently purchased. I want to know if the dimmer below can be used with the power supply. The PS is AC 100-240v (IN) to DC 12v (OUT), while the dimmer ...
0
votes
3answers
152 views

How to control the brightness of an AC light bulb with the instant level of noise nearby

The device I want to make is simple to describe: a big red lightbulb, connected to the AC 110 / 220 V, stays dark when it's quiet in the room, starts lighting up somewhat if there's a moderate level ...
0
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2answers
174 views

Replacement Triac

I have a simple dimmer module with a busted Triac MAC97A6. I want to replace that component so that the module will work again but stores near my area don't have that specific component. One store ...
0
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2answers
853 views

Triac not getting switched by optoisolator

I made this dimmer circuit: simulate this circuit – Schematic created using CircuitLab And it does not work (no light). I have looked up other circuits that serve the same purpose and they ...
0
votes
1answer
216 views

PWM dimmed led floor lamp: can it cause eye strain? [closed]

I have a floor lamp (standing lamp which spreads light via the ceiling). It uses LEDs and it's dimmable. When I capture the light with a camera I can clearly see oscillations. It is known that PWM-...
0
votes
1answer
209 views

How to make my automatic night light circuit dimming?

I am working on a project named as automatic night light.The idea is simple; LEDs are on when there is dark then LEDs turn off when the circuit detects light. However I have constructed the circuit I ...
0
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1answer
235 views

dimmers - is the problem solved with pure sine wave

I've been interested in dimmer technologies these days, and spent some time in reading about this topic on the web. According to what I understand, the problem with usual dimmers is that with ...
1
vote
1answer
631 views

Best Lamp Dimming Circuit? [closed]

What's the best way to dim a lamp, and why? Also, which method is typically used in most typical residential dimmers? I originally thought it was as simple as wiring a potentiometer between the source ...
0
votes
1answer
731 views

Replace a trimmer potentiometer with a thumbwheel (rotary) potentiometer [closed]

I am trying to make an LED strip dimmer circuit using LM2596 Buck converter, but the trimmer pot makes it difficult to change the brightness every time. Is there any way to replace the trimmer pot ...
1
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3answers
497 views

Help reverse engineering PWM Dimmer Flicker-less mod

I've been playing with LEDs for video work for a while. I made some LED panels using strips and off the shelve controllers which always worked nicely while on full brightness. Everytime I dim then ...
-3
votes
1answer
214 views

0-10 V AC dimmer [closed]

This is a 0-10V DC to AC dimmer. The problem is a big jump when supply from 4V to 5V DC to the input so the output voltage comes from 60V to 130V AC. This is not good, if anyone has any idea how to ...
0
votes
3answers
285 views

How should I modify this back to back MOSFET AC mains circuit?

I have a WiFi enabled AC mains light dimmer/switch that uses a back to back MOSFET design. The device sits in series with the load (lightbulb) and therefore does not have its own return/neutral ...
1
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1answer
58 views

Low-power halogen lamp dimmer

I want to connect a set of low power halogen lamps to a dimmer. This would be used to illuminate plants who are then monitored using a hyperspectral camera. I was wondering whether any spurious ...
1
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2answers
2k views

How to use SCR to control the power of a heater

I would like to point out that I am not an expert (as it is perceived by the question) in the use of scr, diac, and triac and that this question is more for academic purposes than use in real life. ...
0
votes
1answer
397 views

Why is this digital potentiometer working?

I've been working on a circuit to dim a Shop Light that according the manufacturer is 0-10V dimmable. Built into the light is an LED power supply that provides two wires, a purple DIM+ and grey DIM-. ...
0
votes
1answer
57 views

Light fixture dimming, LED turn of

I'm trying to dim a light fixture with the DALI protocol. It functions quite fine but when the dimming gets low two thirds of the LED:s turn of. Why is this? Is it because the voltage forward gets ...
0
votes
1answer
232 views

Help me understand and fix this dimmer circuit

I have a table lamp which has a busted dimmer control. When I bought it the dimmer used to kinda work but then after a few days it worked only when the rotary knob was turned all the way high. After a ...
0
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2answers
672 views

Two or more Diac Triac dimmers in parallel

I wanted to know whether connecting two or more simple diac-triac ac lamp dimmers in parallel with the same load cause any problems? I do not want to connect them in series, just parallel will be ...