Questions tagged [dimming]
'dimming' is the action of reducing the amount of light emitted from a device.
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Switching between different loads on C.C. LED power supply
I'm designing a visual system with many different lamps. It's my first time working with LED power supply. I want to use one constant current LED power supply for a couple of 24 V DC LED lamps (...
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PWM Dimming of a Low-Voltage DC Incandescent Filament (Thermal Shock?)
I plan on driving some Numitron tube filaments from an IV-16 tube (datasheet here). For ease of access I'll give the key specs here:
Nominal filament voltage: 3.15V
Max filament voltage (steady-state)...
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Car side-mirror dimmer simulator circuit - DIY
Would like to make a simple car side-mirror simulator circuit. The side mirrors I installed (for better blind spot) do not have a dimmer circuit and I am getting LIN bus errors since the dimmer wires ...
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PWM LED Dimming Circuit Design Recommendations and comparison against linear dimming
I want to dim a 5 meters long LED strip reaching all across a room with a PWM signal from an Atmega328p. First the schematic and the specs:
Specs:
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What analog component(s) can I replace a relay with
I'm extremely new to electronics and have a college group project to build a traffic light using only analog components (ICs are allowed), my subsection is to design and build the driver unit and a ...
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Dimming for high power led
I've tried dimming led using driver(model jls-7265-50w) and using simple circuit with mosfet IRF540 transistor on output of driver. But this circuit didn't work well. When i decreasing pwm around pwm =...
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Dimming LEDs with MOSFET circuit causes low voltage devices to fail
I am a rookie with electronics and have an issue that is beyond me. To set the scene: I have a number of custom-made circuit boards, all performing different tasks as a part of some automation I am ...
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What is the purpose of diodes on the gate of a silicon bilateral switch (SBS) TRIAC trigger circuit
Here is a typical TRIAC SBS trigger circuit to control a resistive load. This example is from the BS08A datasheet but there are plenty of others.
What is the purpose of the D1,D2 and R3? It appears to ...
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Dimming light idea
I have this idea to dim a light. The problem is that my EBS simulation software won't allow me to see the actual result of the dimming. The only way to test it out is to physically construct the ...
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Schematic of a simple zero-crossing triac switch
I have a triac in a 60Hz 120V power line (as is often done for dimming)
and want it to only switch on the power when the AC voltage is low
(widely between -40V and +40V would even be fine).
This is ...
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Estimating apparent LED brightness: current or power?
TL;DR - based on the physics of LEDs, does current or power give a better estimation of actual light output of an LED?
I am building a dimmer circuit with a few discrete steps, to operate a COB LED ...
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PWM with IN-12 nixie tubes [duplicate]
I have some IN-12 nixie tubes and I can drive them using TPIC6B595N chip which has 50V clamping. And this chip has G pin which it is possible to use global dimming. What I questioned is which PWM ...
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Does the “non-dimmable” in “non-dimmable LED driver” refer to input, output, or both?
When an LED driver is described as “non-dimmable”, does this mean that only the input power must be constant, or that both input and output power must be constant?
Disclaimer: I’m not an electrical ...
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Why are most of the LED lights for living dimmable just by their remote (they do not work with a wall dimmer)
I am trying to replace the lights in the entire house with LED lights with a more modern style like this one https://www.amazon.ca/dp/B09582MM2J. They all use LED strips and they say they are not ...
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MOSFET between LED and driver for PWM dimming?
So I found a lot of cheap nice LED lamps with some generic cheap non dimmable LED driver. I like dimming.
The LED is something like 18 V, 250 mA.
Could I stick something like an ESP32 with a MOSFET ...
