Questions tagged [incandescent]
Emitting light when heated, like the wire filament in an incandescent light bulb that is heated until it glows by the current running through it.
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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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Optimizing Incandescent Traffic Light Design
I'm currently working on designing an incandescent traffic light system and could use some guidance on extending and optimizing my design. Initially, I've successfully implemented the required ...
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Why is this light-dimming configuration flickering? Why is it not stable?
My question is why is this configuration showing an unstable flickering voltage accross the light bulb? Were incorrect capicitance values used?
Observing the oscilloscope, I note that there is some ...
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Engine instrument panel with duplicate Charge light, one incandescent and the other LED [closed]
I have an engine in a boat. The ignition on switch, start, and heat are on a panel on the navigation desk. There is also a power LED, incandescent charge, and led oil light. All the engine instruments ...
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How to calculate the effect of different voltages on an incandescent bulb?
How can you calculate the effects of running a 120 V, 7 W lamp on, say, 80 V, or any other voltage?
What will the current draw be when you reduce the voltage? Is it possible to calculate knowing the ...
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How to find the right specification of LED corresponding to an incandescent bulb to replace the latter?
I have a motorcycle and its taillight had an incandescent (filament) bulb. The wiring diagram says it's specification was 18W for 12V supply. Now, I want to use an LED (or several) in its place with ...
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What is the hottest filament I could find in an incandescent lamp?
I read old light bulbs get really hot.
I read that the incandescent lamps get quite hot but I couldn’t find a filament that gets ‘the hottest’.
Is there a filament that gets the hottest?
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Origin of 220-250V distribution standard
While many countries in the world supply "domestic use" electricity at 220-250V AC, there's not much information of how that standard came to be. The history articles usually stick to Edison ...
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Using 110 Vac incandescent light bulb at 220 Vac with a series diode
I have a 110 Vac incandescent light bulb but I need to use it in 220 Vac.
If I add a diode in series with the bulb, the RMS power is the same as before but the peak value of voltage and current is ...
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Christmas lights in series with one broken bulb
I read this about Christmas mini-lights in series: "When one bulb's filament breaks, current stops flowing, so the remaining lights go out, and the full 120V appear across the broken filament. ...
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Replace incandescent lamps with LEDs in vintage christmas lights [closed]
I have vintage Christmas lights with 20 incandescent lamp connected in series. They are connected directly to AC plug (220V here).
UPD: Original bulbs are 13.5V 160 mA (similar to https://www....
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How do the non-circuit old Christmas lights flash?
I have a 80's Christmas incandescent light string without any kind of electronics. They are static until you replace one normal bulb with one marked bulb.
It seems to be that the marked bulb (that ...
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Is the luminous efficiency of a 5000 K incandescent greater than that of a 3000 K bulb?
The color temperature represents the color of light emitting from an ideal black body, when heated to said temperature in kelvin, and how an incandescent bulb emits light is close to a black body.
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Why does my lamp say "Use max 60 watt Type A OR max 10 watt LED?"
I'm really intrigued by the label on a new lamp. It says:
Caution: To reduce the risk of fire, use MAX 60 watt type A lamp OR use MAX 10 watt self-ballasted LED lamp or lamp adapter.
Now I didn't ...
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How Many Ohms is an Average Incandescent Lightbulb? [closed]
The title says it all...
How many Ohms is an average incandescent lightbulb?
EDIT
After a few people making me realise that my question is kind of imprecise, here is what the question really asks:
If ...
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Putting LED near incadescent light source on lava lamp
I am currently trying to modify a traditional lava lamp, to change the colour of light it emits, by placing an LED strip somewhere around the body, so it also lights the inside of the lamp.
My lava ...
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How to check voltage and wattage of an unmarked incandescent bulb?
I've salvaged 160 incandescent bulbs from fairy lights. They were connected in 80 bulbs in series then connected in parallel. They were plugged into 220V.
How do I measure the voltage and wattage of ...
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Using Arduino PWM to drive an incandescent lamp
I'm trying to drive an incandescent lamp using Arduino Leonardo PWM, the incandescent lamp has the following electrical specifications:
peak voltage=1.4 V (max)
peak current= 1.14 A (max)
peak power = ...
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Does an equivalent LED bulb for an "inner bulb of an old incandescent E14 bulb" exist? [closed]
Update: question solved:
The bulb is a Gy6.35
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I have an old lamp with an incandescent bulb.
I would like to replace the incandescent bulb with an LED bulb, so I disassembled and photographed ...
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Question about purely resistive incandescent lamps put in series and fed double normal voltage
I am curious about how and why if you take 2 purely resistive incandescent lamps (light bulbs) that are rated at 40 watts and 60 watts, both 120V AC (RMS) ratings, if you put them in series and feed ...
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Cheap and safe way to dim 100+ 60W Incandescent bulbs
For my wedding reception, we are building ~25 lighting fixtures with 4 bulbs each (fixture per table for dinner). For aesthetic and budget reasons, these are 60w "Edison-style" bulbs which we want to ...
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Car Battery Charge Indicator Replaced with LED then Dimly Lit When Off
I think I should be able to grasp something from this question but I'm not sure if my case is the same or not. Would be great if I can get enlightment on this.
In my case I'm replacing incandescent ...
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Why would an incandescent bulb produce a bright flash when burning out?
A typical way of an incandescent bulb to burn out is with a bright blueish flash and often an audible sound and (very rarely) an explosion of the bulb glass.
Wikipedia says the following:
Since a ...
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Parallel Incandescent Bulbs and Resistors
I have built the circuit in LEDs and high currents and it works well - when the switch is open, the incandescent lamp lights up but the LED doesn't. When the switch is closed, the lamp goes out and ...
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LEDs and high currents
In smartening up my doorbell I've been playing with my illuminated pushbutton and have fallen into a bit of a rabbit hole. The doorbell normally:
simulate this circuit – Schematic created using ...
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Matrix of small incandescent lightbulbs - problem with buzzing
I am prototyping a circuit for controlling matrix display of small incandescent lamps with Arduino (each lamp is 6.3V 0.3A). I designed the circuit in Yenka and built it. It is composed from 3 types ...
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Are the 2 terminals of an incandescent bulb lamp equivalent?
Compared to a resistor, which has 2 equivalent terminals, does an incandescent bulb lamp also have equivalent terminals?
Ji iskd
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Still 1000 hours of lifetime [closed]
I am familiar with the famous Phoebus cartel of the companies Osram, Philips and GE, but this cartel began its operation in 1924 and lasted at most to the World War II. In the second half of the 20th ...
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Replace in-series incandescent lamps in a makeup mirror with LEDs
This is my first post here.
My wife uses a makeup mirror which has 10 x BA9s in series. Each lamp is 3W 24V and since we are in Europe they run on AC 230V nominally (reading off a multimeter is ...
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Resistor and Incandescent Lamp in Series
I’m new to electronics and am trying to ground myself in basic concepts. On my test circuit board I have a 5.08V power supply, a 200 ohm resistor and a 1.5V incandescent lamp in series. The voltage ...
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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 ...
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Using a vintage button bulb saver be used for CFL or halogen lamps?
Recently got a big box full of vintage tools and electrical stuffs. I came across this strange looking (seems vintage by its looks) button device. Its the first time I came across it.I googled and ...
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Light bulb burns out -- why there is an arc in the switch?
I use light bulbs (common incandescent) in the room and they
burn out periodically, ca. one bulb in 4 months burns out.
Very often, exactly at the moment when it happens, I see an arc (blueish light ...
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Led bulbs Vs CFL and incandescent bulbs [closed]
Recent Innovations forced mostly by newer and stricter government regulations have brought us through extremely unreliable CFL light bulbs from the old incandescent light bulbs to these very expensive ...
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How to secure a good safe mode when MOSFET burns open circuit
I am working on a circuit like this one:
In the circuit the PMOS Q1 is normally closed, and all energy from the source V1 runs through the resistor R2. If the photo sensor D2 detects that the LED D1 ...
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Can I connect two 6V 25W bulbs in series to a 12V supply?
I've two GE 4510 6.4V 25W tractor bulbs with me. Unfortunately, the only power supply I've in my possession is capable of outputting only 12.02V. Can I connect the two lamps in series to the 12V ...
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Incandescent bulb for 220V vs 110V and difference of their resistance?
I know that 40Watt,110V incandescent bulb has about 302 ohm resistance of tungsten filament (which is metal and of course have low resistivity) comparing it to 40Watt, 220V bulb which has about 1200 ...
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Flicker flame bulb
According to this thread, flicker flame bulbs are neon glow bulbs. Consequently, they do not generate light through incandescence.
However, I have also seen bulbs marketed as flicker flame ...
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Sign on range hood light switch says "incandescent or resistive 120V AC Only"; does this mean no CFL or LED?
The switch includes a standard-looking rheostat; I have read the issues around using dimmer switches with conventional CFSs. I don't value the "dimmer" function on the hood -- just want to see the ...
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Operating a 60W incandescent bulb
I want to dim a 60W incandescent bulb using PWM on a MCU. The bulb is rated at 220-240V 50-60Hz at 60W. I am planning on using a optoisolater connected to the PWM pin. I want to run it on DC, so since ...
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Bulb replacement in a car 12V 60mA vs 14V 65mA
The climate control in my car needs to have some backing lighting bulbs replaced. Can I use a 14V 65mA bulb instead of the 12V 60mA bulb that is suggested by other people who have replaced these ...
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SSR not switching dimmed load
I have a system where there is a "master dimmer" (an 800W dimmer designed for household lighting). From that master dimmer, I have a few SSRs switching 40W incandescent light bulbs.
The idea being ...
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LED light bulbs flicker when switched off - where does the energy come from?
Outside my house, at the front, I have a set-up of 3 lights attached to the wall. These lights can be switched on using a switch inside the house. Furtermore, they are attached to an infra-red sensor ...
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Difference between incandescent/fluorescent/LED wattages?
If the numbers on the 'light output' table at the bottom of this page (here) is correct, and if I have a lamp (like this) that has a maximum wattage of 60 and takes incandescent bulbs:
Does that mean ...
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Electric light bulb burns out
Why electric light bulb more often burns out when we switch from OFF to ON our wall switch, but not during regular work? What happens to it so it burns?
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How many lumens does an incandescent halogen bulb provide?
I got my hands on an old slide projector (the kind that projects cel slides onto a wall).
The light source, is a 24V, 150W incandescent halogen lamp.
As a little pet project, I'm thinking of ...
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How to add lumens
I have n bulbs of luminosity k in fixture a. How many bulbs of luminosity l do I need in fixture b for the brightness of a to match the brightness of b?
Specifically, I'm wondering how many standard ...
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30x Incandescent light bulb in parallel ? + dimming
I'm trying to connect 30x small incandescent light bulb in parallel (1.5v / 300mA). But I'm having some issue designing the supply and dimming circuit. Does it just work like LED's for the ...
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Trouble converting 12VDC incandescent to LED: lack of resistance
I'm converting two, independent, incandescent bulbs (OEM 212-2) fixtures to use LEDs for automotive map reading. Each incandescent bulb (12-volt/system) measures 1.5 ohms with a meter; however, there ...
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DIY power 230v filament bulb off grid [closed]
I need to power a 230v bulb off the grid via solar power. Typically, I would have solar panels that charges some 12v dry/wet cells. These cells will have to supply an inverter that would power the ...
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