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Questions tagged [incandescent]

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1answer
57 views

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 ...
2
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2answers
151 views

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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2answers
102 views

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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1answer
93 views

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 ...
1
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1answer
103 views

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 ...
2
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1answer
73 views

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?
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1answer
111 views

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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2answers
52 views

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 ...
0
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1answer
620 views

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 ...
1
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1answer
94 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 ...
4
votes
1answer
138 views

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 ...
17
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3answers
2k views

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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3answers
130 views

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 ...
-1
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1answer
409 views

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 ...
0
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2answers
361 views

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 ...
0
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1answer
590 views

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 ...
-1
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1answer
94 views

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 ...
2
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2answers
114 views

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 ...
0
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3answers
74 views

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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2answers
5k views

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 ...
0
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1answer
652 views

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 ...
1
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2answers
19k views

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 ...
0
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2answers
523 views

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 ...
2
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2answers
162 views

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?
2
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2answers
2k views

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 ...
2
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1answer
10k views

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 ...
1
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1answer
165 views

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 ...
2
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2answers
9k views

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 ...
0
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1answer
121 views

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 ...
0
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1answer
444 views

Accidentally soldered in 12v 60ma bulbs in a 14v 95ma circuit - dangerous?

I was replacing some lights in my car's HVAC control box, and I used 12v 60ma bulbs (link), and after reinstalling it in the car (bulbs are working), I was doing some Googling and noticed that some ...
0
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1answer
558 views

Touch dimmer with low voltage transformers, needs incandescent to work? Updated!

I've looked extensively about this topic, and can't find any answers. Hopefully someone on here can help. I live in Texas and have 120V power in my house. I'm using a lamp touch dimmer to dim two ...
1
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2answers
400 views

Do parabolic reflectors in globes increase the brightness of the filament's light, or just 'spread' the light?

If you compare a traditional 60W incandescent globe with the same filament specification as one with with a parabolic reflector built into the globe, does the (usually) aluminium reflector actually ...
0
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2answers
460 views

How to drive miniature incandescent light bulbs with a micro controller?

I have an assortment of minuature (~2.5mm diameter) light bulbs that I'd like to use for a retro-looking project. Driving LEDs is fairly easy with a micro controller, if the output is too weak, I'd ...
4
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3answers
2k views

What makes an incandescent light bulb run out?

What is or are, the most likely and common ways - the weak links in the chain (including I assume poor electricity wiring / configured housing) - that cause a traditional incandescent light bulb to ...
8
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1answer
13k views

Replacing incandescent bulbs with LEDs, unexpected behavior

I have an over-the-stove microwave/ hood vent combo with 2 adjustable-brightness lights. The lights appear to be 12V lamps with a G4-style connector, and they burn out all the time... like every 4 or ...
2
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2answers
3k views

How to determine required voltage of a lightbulb

I have a bulb here that has no markings except it says 25 watts, I just wanted to know what voltage does it need to power up. Our standard voltage here is 220 V, I tried plugging it on a 110 V ...
4
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1answer
1k views

Will a incandescent burn out if you leave them on forever?

We've all had a time or too two that when you really needed light, and I mean need it immediately, and you flip on the switch, and with a pop and a bright flash, your incandescent is toast. However, I ...
5
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2answers
5k views

What are the effects of AC vs DC for an Incandescent bulb life?

What are the effects of AC versus DC on incandescent bulb life? Provided the same amount of power is being delivered to the bulb.
2
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2answers
5k views

A christmas light bulb question

This may look like a homework, but it's not. Actually it is related to Christmas. My Chrismas lights in front of the house are constructed from segments. Each segment consists of 16 incandescent light ...
30
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2answers
11k views

Why are lightbulbs considered resistive load?

A lightbulb (a plain old incandescent lamp) is typically brought up as an example of resistive load. Yet the filament is actually made of several feet of very thin wire cleverly coiled to form a ...
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2answers
1k views

How To Calculate Fluorescent To Incandescent Wattage? [closed]

This is simple mathematical question but I cannot figure it out: Compact fluorescent lamps consume 75% less wattage and still deliver equal power of incandescent lamp. If 15W compact fluorescent lamp ...
5
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3answers
3k views

LED lighting with incandescent spectrum?

Is there any reason why they don't produce LED lights with a spectrum closely matching that of an incandescent bulb. Incandescent bulbs produce a nice warm light, while LEDs (even warm white ones) ...