Questions tagged [dimmer]
The dimmer tag has no usage guidance.
167
questions
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3answers
71 views
uC controlled MOSFET based LED Dimmer stops responding
I've designed and implemented LED Dimmer driven by PWM from Adruino Pro Micro (CLONE) with software based on MySensors library.
See the schematic attached below.
The idea is really simple:
uC is ...
0
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0answers
26 views
Halogen 24V/150W light dimmer design
I have 64640 HLX (24V/150W) halogen lamp with 24VAC/300W power source and I want to design a dimmer to control the halgen light. I have two solution in my mind:
1- DC solution : using PWM and power ...
0
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0answers
48 views
LED Dimmer current source and current sink detection
I'm trying to design an input circuit for a microcontroller that will work with 1-10 V dimmers. There appear to be two standards for dimmers, current source and current sink, and I'm trying to work ...
1
vote
1answer
23 views
I want to handle the voltage and current spikes from inductive load of 220V AC ceiling fan
I am trying to regulate speed of 220V ceiling fan from Arduino but unable to handle the reverse voltage and current though I am applying the flyback diode across inductive load.
0
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3answers
128 views
1000 W Arduino dimmer
[![enter image description here][2]][2]everybody, I have a project which is to dim 1000 W halogen light connected to Arduino. I used this circuit which is working fine with 100 W halogen light but ...
1
vote
1answer
93 views
Triac dimmer makes audible noise (hum or buzz)
I have some triac dimmer from IKEA (bought several years ago).
This dimmer makes audible noise (hum or buzz), very notable during night when it is placed on a bedside table. I failed to find the ...
0
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1answer
43 views
Triac control circuit through load
Why is it that in every triac analog dimming circuit I find that the triac triggering circuit is fed through the load and not straight from the mains??
0
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4answers
43 views
Phase control universal motor dimmer
I need to control the speed of a 220v universal motor using arduino and I am thinking to use an atteny85 ic with a phase control circuit (ltv814 to detect zero crosses and moc3052 to drive a triac to ...
0
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1answer
70 views
How much battery power for LED and how to make it flicker [closed]
I am trying to figure out what configuration of battery(ies) I need to power this LED. I am only using one (specifically the warm white 1-up).
I am also looking to make it flicker like a candle with ...
0
votes
1answer
49 views
Tripping a circuit breaker when using a half wave rectifier
How does a half wave rectifier or phase control dimmer affect the triggering of a circuit breaker? For example, if a 20A resistive load was on a 15A breaker with a half wave rectifier. Now average RMS ...
3
votes
1answer
60 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 ...
0
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1answer
39 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
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1answer
164 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
183 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
52 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
151 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
184 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 ...
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2answers
75 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
66 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
88 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
210 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
313 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
83 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
27 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
474 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
60 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
105 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?
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votes
1answer
36 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
106 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
68 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
32 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
208 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
338 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
465 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
84 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
685 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 ...
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votes
1answer
252 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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3answers
878 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
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1answer
218 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
votes
2answers
86 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
115 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
501 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
vote
4answers
721 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
117 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
62 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
vote
1answer
108 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
90 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
191 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 ...
-1
votes
3answers
270 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
315 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 ...
