Questions tagged [ballast]

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Ballast Power Draw

I am trying to calculate the current draw for 6 florescent bulbs and ballasts. There is one ballast per 36W bulb. I know that the current draw for each bulb would be 36/240 =0.15A (0.6A total) How ...
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1answer
48 views

Magnetic ballast with g23 bulb with capacitor

I am trying to make a UV-b photo-therapy light and want to make sure I'm understanding the circuitry correctly-so i don't hastily burn a $50 bulb. Im using a Phillips PL-S 9W/01/2P (link here). It's ...
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1answer
159 views

Can this 1000W ballast be wired for 240V and plugged to 120V to run a 400W MH Lamp?

I've a 1000W MH ballast. Is it okay to use the wiring for 240V the ballast and use it on 120V? Like does it reduce the ballast to 500W? I've attached a video for better understanding of how the bulb ...
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1answer
60 views

Is it okay to run a Mercury Vapor Lamp of lower wattage (100/150/175W) on a 400W MHL/MVL ballast? Also can a 60Hz ballast be used in 50Hz?

So, I have this RAB BMHH400PSQ Metal Halide Pulse Start Ballast 400W ,M135/M155 MULTI TAP 120-277V with me. Since the MVL are being phased out it has become quite difficult to get a ballast for one of ...
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1answer
299 views

Current limiting ballast for a transformer

So, guys, I hope you can explain to me how to calculate the necessary parameters for a ballast to limit the current on the primary side of a high voltage transformer.It is for a tesla coil project. To ...
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2answers
51 views

Current calculation

I have a question of confusion in my mind, so I thought to share it with you all. when we connect a halogen lamp of 12 VAC 50 watt to 220 VAC with the help of transformer, why the current consumption ...
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1answer
64 views

Is it possible to connect ballast in parallel with AC source without resistor?

I am working on a project that will implement automatic power factor correction for inductive loads. I would like to use the ballast from a fluorescent lamp as my test load for this project. Is it ...
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0answers
655 views

4 bulb Ballast only lighting 2 bulbs

I have a six T8 Fluorescent light fixture. The 2 inner bulbs are powered by a 2 bulb ballast GE232-120RES-DIY, and the 4 outer bulbs, 2 on each side are powered by a 4 bulb ballast GE432-120RES-DIY. 2 ...
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1answer
2k views

How to test a pond filter UV lamp and ballast?

I bought a new UV lamp for a pond filter but I don't see any light from the inspection lens in the lamp holder. I checked the the connection in the socket and I see 240v. Does that mean the ballast ...
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1answer
245 views

Does a high voltage power supply need a ballast?

I am currently trying to build a power supply for multiple kV. According to Wikipedia an arc has about the same resistance as Metal. I am building my power supply with following parts: frequency ...
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3answers
3k views

Using a microwave oven transformer as ballast by shorting the secondary

I am self learning electricity and have some basic understanding of RLC circuits. I came across 2 separate articles (here or here) describing playing around with microwave oven transformers (MOT) ...
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1answer
812 views

How does ballast pnp regulator work?

I saw this ballast regulator on internet. On this scheme NPN based, I easily understood the Vout = Vref - Vbe. simulate this circuit – Schematic created using CircuitLab But I don't ...
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1answer
91 views

How to determine what ballast for fluorescent lights?

I am creating a UV Cleaner, but this is my first time working with fluorescent bulbs and I wanted to make sure I'm doing it correctly. I got the following fluorescent bulbs: GT15T8 Philips UVC Bulb ...
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1answer
2k views

Fluorescent tubes in series?

Is it possible to use fluorescent tubes wired in series, provided that the ballast can supply a high enough voltage and power? Problem description F28T5 are too long (4ft) for me, so instead I plan ...
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1answer
2k views

Using Oscilloscope So That Nothing Blows Up

I want to see the input current waveform of an LED T8 18W. An EM ballast is purposely placed in series with the lamp. I don't have a power analyzer. What's available is a GDS-2102 oscilloscope. So I ...
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2answers
139 views

Why does compact fluorescent lamp (CFL) save more energy?

I read information about fluorescent lamp and compact fluorescent lamp (CFL) but I still don't understand why CFL saves energy and produce the same amount of light? Maybe the electronic ballast ...
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1answer
92 views

Power on ballast without light tube

I need to turn on an electric ballast without connecting the fluorescent tube, since I'll use the ballast's output to power another device. My single-lamp ballast has 4 output wires. This is how ...
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2answers
330 views

DO we have to ground transformer?

I am using the transformer (a ballast), and its specfication sheet could be found here ballast specification. But on the data sheet, it doesn't says where we need to ground it. Usually, we would ...
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2answers
886 views

Auto-Transformer: how to understand the following diagram?

I have a question about the CW Auto-Transfomer that I will be using. The wiring diagram is above. As you can see, the equitment takes 277/240/208/120V as input. But on its specification sheets, it ...
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2answers
3k views

Limiting mains current

What would be the best way to limit mains (240V @ 50Hz) current? I want at least 1A of current. The output should be AC 240V at any frequency greater than or equal to 50Hz. It should be able to endure ...
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1answer
1k views

How does a reactive ballast work?

I want to use a MOT (microwave oven transformer) for something it's not intended for. As a consequence, I need to limit the current so it doesn't melt itself. I am planning on connecting the ballast ...
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2answers
162 views

Electron Carbonization issue related to inductors and ballasts

I have searched on the internet and I found nothing on this area. Not even a wiki page, and not on several book glossaries. This is related to the CCFL ballasts and inductors that used to control the ...