Questions tagged [dimmer]
The dimmer tag has no usage guidance.
0
votes
1answer
36 views
Create a polar cap with a diode?
I'm trying to order components, so I can make a board following this circuit.
My problem is, I cannot find any 0.1uf capacitors, that are rated at 275VAC. The highest voltage I can find, in stock, is ...
0
votes
1answer
83 views
amplifier for 10V LED dimmer control using Raspberry Pi
My problem is I need to have an amplifier circuit design - schematic + components BOM with specific model information that is able to provide a dimmable output signal (Vout) 0.2-10V <0.8A for a set ...
1
vote
2answers
130 views
What is the purpose of diode in parallel with the resistor divider in MOSFET gate driving circuit
I have built several 200W AC dimmers using Microchip 8-bit CPU and the illustrated back-to-back MOSFET circuit.
I have seen on Internet schematics with the D1 diode in parallel with the R1 resistor, ...
1
vote
1answer
49 views
True replacement for MOSFET Infineon SPD04N50C3
I have built many 240V AC dimmers with back-to-back Infineon SPD04N50C3 N-channel MOSFET transistors without any problems. Unfortunately they are not manufactured anymore.
I found a replacement from ...
0
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0answers
50 views
Light dimmer circuit using triac gives fluctuating dimming
Light dimming using triac and optocoupler is very common and basic circuit, I have successfully tested the dimming for 1 channel (1 triac, 1 opto-coupler) now I want to add one more light dimmer with ...
5
votes
1answer
151 views
230VAC dimmer MOSFET failure at surge test
Our dimmer prototypes work fine, but fails surge test, as per 61000-4-5, 1/50us.
Circuit is isolated dimmer for 230VAC different types of bulbs. It uses 2x N MOSFET as switch. V503 detects zero ...
-1
votes
2answers
62 views
Combining a light therapy LED lamp with a light alarm clock - programmable dimmer
I live in a place where there is little daylight in winter, so I would like to use a light therapy lamp. Also, I would like to use it to wake me up, gradually increasing the intensity of the light ...
0
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1answer
39 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
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2answers
63 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
76 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
153 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
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1answer
53 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
25 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,...
3
votes
2answers
453 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
vote
1answer
55 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
votes
1answer
82 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
35 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
votes
2answers
65 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
vote
1answer
62 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
31 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
119 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
votes
2answers
211 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
votes
1answer
347 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
70 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
508 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
168 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
votes
0answers
238 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
votes
3answers
617 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
179 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
75 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
votes
2answers
80 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
votes
2answers
351 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
582 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
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1answer
91 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
votes
1answer
55 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
93 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 ...
1
vote
1answer
75 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
161 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
197 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
votes
2answers
223 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
1k 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
241 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
263 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
votes
1answer
304 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
703 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
913 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
vote
3answers
561 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
257 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
4answers
348 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
vote
1answer
59 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 ...
