Fluorescent ballast schematic

Fluorescent Ballast Wiring Diagram — 8 foot fluorescent ballast wiring diagram, advance fluorescent ballast wiring diagram, compact fluorescent ballast wiring diagram, Every electric arrangement is composed of various diverse pieces.

Each component ought to be placed and connected with different parts in particular manner. In order to be certain that the electrical circuit is built properly, Fluorescent Ballast Wiring Diagram is required. How can this diagram aid with circuit construction? The diagram offers visual representation of a electric structure. On the other hand, this diagram is a simplified variant of the structure. It makes the process of assembling circuit easier. There are just two things that will be found in almost any Fluorescent Ballast Wiring Diagram.

The first element is symbol that indicate electrical component from the circuit. A circuit is generally composed by various components. The other thing that you will get a circuit diagram would be traces. Lines in the diagram show exactly how each component connects to a another. The rankings of circuit elements are relative, not accurate. The order is also not plausible, unlike wiring schematics.

Diagram only shows where to place component in a place relative to other elements inside the circuit. Although it is exemplary, diagram is a good basis for everyone to construct their own circuit.

One thing you have to learn before studying a circuit diagram is the symbols. The most common components are capacitor, resistor, and battery. Additionally, there are other elements such as ground, switch, motor, and inductor. As stated previous, the lines in a Fluorescent Ballast Wiring Diagram signifies wires. Occasionally, the wires will cross. But, it does not mean link between the wires. Injunction of 2 wires is generally indicated by black dot in the intersection of 2 lines.

There will be primary lines which are represented by L1, L2, L3, etc. Colours can also be utilised to differentiate wires. Usually, there are two chief types of circuit connections. The first one is known as series link. Due to the electric current in each and every part is similar while voltage of the circuit is total of voltage in each component.

Parallel relationship is more complicated compared to show one. Unlike in string connection, the voltage of each element is similar. It is because the component is directly linked to power resource.JavaScript seems to be disabled in your browser. You must have JavaScript enabled in your browser to utilize the functionality of this website.

You can return items to us within 30 days of receiving your order providing the goods are unused. A fluorescent tube uses electricity to make mercury gas emit ultraviolet UV light. When that UV light which is invisible to the naked eye interacts with the coating of phosphor powder inside the tube, it glows and produces the light we see and use in our homes. But whenever we use electricity we must control it, otherwise we risk destroying the device and even putting ourselves in danger.

The process that occurs inside a fluorescent light involves molecules of mercury gas being heated by electricity and made more conductive. Without a ballast to control this, there would be too much current for the light to take, and it would burn out and possibly even catch fire.

Fluorescent lights use either an electronic or a magnetic ballast. These rely on the principles of electromagnetism, in that when an electrical current travels through a wire, it naturally generates a magnetic force around itself. A magnetic ballast also called a choke contains a coil of copper wire. The magnetic field produced by the wire traps most of the current so only the right amount gets through to the fluorescent light.

That amount can fluctuate depending on the thickness and length of the copper wire. This small cylinder-shaped component sits behind the light fixture and is filled with gas which, when heated, enables the light to start. This is called the pre-heat method. As it can take several seconds for this process to complete, you may see a delay between the moment you flick the switch and when the fluorescent light begins to glow.

Used in older T12 and some T8 tubes, this method functions without a starter. One advantage of the rapid-start method is that by providing a low, continuous current rather than a strong surge, it prolongs the life of the fluorescent light. However, it does use more energy. Using more sophisticated circuitry and components, ballasts can control the current running through fluorescent lights with greater precision. Some older electronic ballasts employ the rapid-start method described above, while newer and more advanced models use what are known as instant-start and programmed-start.

These ballasts were developed so lights could be turned on and operated at their brightest at the first flick of the switch. Rather than pre-heat the electrodes, the ballast uses a high-voltage boost around volts to heat and light the filaments and then the mercury gas. Designed for areas in which the lights are constantly switched on and off, these ballasts pre-heat the electrodes with controlled amounts of current before applying a higher voltage to start the light.

When magnetic ballasts break, it is often blamed on the bulb. You can find out whether the issue is with the ballast, starter or the lamp with our guide - Easy Fixes for Slow to Start, Flickering or Faulty Fluorescent Tubes. In order to ensure that the issue is with the ballast, you will want to test it with a multimeter. A multimeter is designed to measure electric current, voltage and resistance. They are inexpensive and can be found at most electronics shop. These instructions are for guidance purposes only — ensure you reference the manufacturers wiring diagrams.

If you are missing the instruction manual, most major manufacturers will have opies on their website. If the ballast is not the problem, you may need to replace your fluorescent tube. You can find out how to do this safely with the guide Replacing and Recycling Fluorescent Tubes Safely.T12 fluorescent tubes are not made anymore because of poor energy efficiency. While these lamps are still in stock in some stores, replacing the ballast with a more efficient T8 electronic ballast could be a better choice.

Fluorescent lamps use a ballast which transforms line voltage to a voltage to start up and operate the lamp s. Newer fluorescent ballasts are usually rated for both volts and volts. Some are rated for only volts, others for only volts used in commercial environments. CFLs for the home have a built- in ballast at the base of the bulb.

Commercial CFLs use a separate ballast. Ballasts have a wiring diagram to show how they connect to the lampholders. If a T12 magnetic ballast fails, it should be replaced with a T8 electronic ballast.

T12 ballasts are available, but T12 lamps are being discontinued. Depending on the light fixture, and how it is mounted, it may be easier and about the same price to replace the fixture instead of the ballast.

A new garage fluorescent light fixture could cost less than a replacement ballast. Fluorescent tubes have two common shapes, straight and u- shaped. The most common types are T12, T8, and T5. Lamp diameter is determined by ballast type.

Electrical ballast

A fixture with a T12 ballast must use a T12 bulb. A fixture with a T8 ballast must use a T8 bulb, etc. Light fixtures with ballasts sometimes have labels that show the required type of lamp and ballast F32T8.

There are three requirements when matching a ballast to a lamp. In the example above, lamp type F32T8 has the following three requirements:.

Series Ballast Wiring 1 to 3 Lamps. Series Ballast Wiring 4 Lamps. Fluorescent Lampholder Wiring. Parallel Ballast Lampholder Wiring. Series Ballast Lampholder Wiring 2 and 4 Lamps. Series Ballast Lampholder Wiring 3 Lamps.

Swap Terminals on Non- Shunted Lampholders. Question or Comment? Fluorescent Ballasts. T12 Fluorescent Tubes Discontinued T12 fluorescent tubes are not made anymore because of poor energy efficiency. Fluorescent Ballast Labels The label on the ballast shows two important labels. Lamp compatibility table type of lamps that can be used with this ballast Ballast wiring diagram shows how the ballast is wired to the lamps.

Ballast Wiring Diagram.

Fluorescent Ballast Wiring Diagram

Lamp Compatibility Table. There are four basic types of fluorescent ballasts: Instant start electronic ballasts use a high starting voltage about volts to start very quickly less than 0. There is no preheating of the electrodes for the highest energy efficiency, but are best suited for a limited amount of switching 10, to 15, switch cycles before failure.

Instant start ballasts are wired in parallel.ElectricalElectrical Circuits. Here you will find the electronic ballast circuit diagram with the explanation of the working principle. Here I have given the circuit diagram of Electronic Ballast with proper indication and explained each part of the circuit.

fluorescent ballast schematic

Here you also find the block diagram of electronic ballast which will help you too much to understand the electronic ballast circuit. There are many manufacturing companies who make electronic ballasts.

Their circuit diagrams of electronic ballast different. But all of them maintain the actual block diagram of the electronic ballast. The simple block diagram of the electronic ballast is given below. As you see in the above figure there are a total of five blocks in the block diagram of the electronic ballast. Generally, all the electronic ballasts follows that block diagram.

EMI filter consists of some inductor and capacitor which block or reduces the electromagnetic interference.

Block 2: Block 2 represents the rectifier circuit. The rectifier circuit is used to convert AC to DC. Block 3: Block 3 represents the DC filter circuit. The DC filter circuit consists of Capacitor which filters the impure DC coming from the rectifier circuit. Block 4: Block 4 represents the inverter circuit.

Block 5: Block 5 represents the control circuit, which takes feedback from the output and controls the rectifier, filter, and inverter circuits. Most of the electronic ballasts have not this block. Here you can see the circuit diagram of Electronic Ballast. Each block is indicated. To know the working of this circuit read the working principle section. As you see in the above circuit diagram of electronic ballastfirst a series resistor is connected.

It is connected to limit the overload and short circuit current. This resistor has a very low value up to 22 Ohm.An electrical ballast is a device placed in series with a load to limit the amount of current in an electrical circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps to limit the current through the tube, which would otherwise rise to a destructive level due to the negative differential resistance of the tube's voltage-current characteristic.

Ballasts vary greatly in complexity. They may be as simple as a resistorinductoror capacitor or a combination of these wired in series with the lamp; or as complex as the electronic ballasts used in compact fluorescent lamps CFLs and high-intensity discharge lamps HID lamps. An electrical ballast is a device that limits the current through an electrical load.

These are most often used when a load such as an arc discharge has its terminal voltage decline when current through the load increases. If such a device were connected to a constant-voltage power supply, it would draw an increasing amount of current until it is destroyed or causes the power supply to fail. To prevent this, a ballast provides a positive resistance or reactance that limits the current. The ballast provides for the proper operation of the negative-resistance device by limiting current.

Ballasts can also be used simply to limit the current in an ordinary, positive-resistance circuit. Prior to the advent of solid-state ignition, automobile ignition systems commonly included a ballast resistor to regulate the voltage applied to the ignition system. For simple, low-powered loads such as a neon lamp or a LED lampa fixed resistor is commonly used. Because the resistance of the ballast resistor is large it determines the current in the circuit, even in the face of negative resistance introduced by the neon lamp.

Ballast was also a component used in early model automobile engines that lowered the supply voltage to the ignition system after the engine had been started. Starting the engine requires a significant amount of electrical current from the batteryresulting in an equally significant voltage drop. To allow the engine to start, the ignition system was designed to operate on this lower voltage. But once the vehicle was started and the starter disengaged, the normal operating voltage was too high for the ignition system.

To avoid this problem, a ballast resistor was inserted in series with the ignition system, resulting in two different operating voltages for the starting and ignition systems. Occasionally, this ballast resistor would fail and the classic symptom of this failure was that the engine ran while being cranked while the resistor was bypassed but stalled immediately when cranking ceased and the resistor was reconnected in the circuit via the ignition switch.

Modern electronic ignition systems those used since the s or late '70s do not require a ballast resistor as they are flexible enough to operate on the lower cranking voltage or the normal operating voltage. Another common use of a ballast resistor in the automotive industry is adjusting the ventilation fan speed. The ballast is a fixed resistor with usually two center taps, and the fan speed selector switch is used to bypass portions of the ballast: all of them for full speed, and none for the low speed setting.

A very common failure occurs when the fan is being constantly run at the next-to-full speed setting usually 3 out of 4. This will render the fan unable to run at the reduced speed settings. In some consumer electronic equipment, notably in television sets in the era of valves vacuum tubesbut also in some low-cost record players, the vacuum tube heaters were connected in series.

Since the voltage drop across all the heaters in series was usually less than the full mains voltage, it was necessary to provide a ballast to drop the excess voltage.

A resistor was often used for this purpose, as it was cheap and worked with both alternating current AC and direct current DC.

Some ballast resistors have the property of increasing in resistance as current through them increases, and decreasing in resistance as current decreases. Physically, some such devices are often built quite like incandescent lamps. Like the tungsten filament of an ordinary incandescent lamp, if current increases, the ballast resistor gets hotter, its resistance goes up, and its voltage drop increases.

If current decreases, the ballast resistor gets colder, its resistance drops, and the voltage drop decreases. Therefore, the ballast resistor reduces variations in current, despite variations in applied voltage or changes in the rest of an electric circuit.

This property can lead to more precise current control than merely choosing an appropriate fixed resistor. The power lost in the resistive ballast is also reduced because a smaller portion of the overall power is dropped in the ballast compared to what might be required with a fixed resistor.

Earlier [ when? Self ballasted mercury-vapor lamps incorporate ordinary tungsten filaments within the overall envelope of the lamp to act as the ballast, and it supplements the otherwise lacking red area of the light spectrum produced.

Because of the power that would be lost, resistors are not used as ballasts for lamps of more than about two watts. Instead, a reactance is used.

fluorescent ballast schematic

Practical lighting design calculations must allow for ballast loss in estimating the running cost of a lighting installation.Fluorescent tubes require a ballast to operate. A fluorescent tube circuit includes a ballast, wires, lampholders, and the tubes. Electricians usually refer to a light bulb as a lamp. On this page, we will refer to a fluorescent light bulb as a lamp or tube. Individual ballast wires each connect to a lampholder on one side of each tube.

The common wire s connect to all of the lampholders on the other side of the tubes. Wire colors for individual and common connections on fluorescent ballasts will vary depending on ballast type, brand, and the number of lamps they support. Ballasts have certain colors for individual wires to lampholders, and other colors for common wires to holders.

Older magnetic fluorescent ballasts are usually wired in series. Newer electronic ballasts are usually wired in parallelexcept for rapid start, programmed start, and dimmable ballasts. When a series ballast rapid start operates multiple lamps and one lamp fails, the circuit is opened and the other lamps will not light. When a parallel ballast instant start operates multiple lamps in a circuit, the lamps operate independently of each other.

If one lamp fails, the others can keep operating as the circuit between them and the ballast remains unbroken.

fluorescent ballast schematic

With some 3 and 4- lamp series- parallel ballasts, if a single lamp in one branch fails, the lamp s in the parallel branch will continue to operate. Series Ballast Wiring 1 to 3 Lamps.

Series Ballast Wiring 4 Lamps. Fluorescent Lampholder Wiring. Parallel Ballast Lampholder Wiring. Series Ballast Lampholder Wiring 2 and 4 Lamps. Series Ballast Lampholder Wiring 3 Lamps. Swap Terminals on Non- Shunted Lampholders. Grounding a ballast is very important.

Grounding is usually automatic if the light fixture is grounded properly. A ground wire from the power source should be connected to a light fixture. A metal ballast mounted to the metal light fixture will automatically ground the ballast. If a ballast has a ground terminal on it, a ground wire should be connected to it. Question or Comment? Bulb vs Lamp Electricians usually refer to a light bulb as a lamp. Individual vs Common Ballast Wires Individual ballast wires each connect to a lampholder on one side of each tube.

Ballast Wiring. Ballast Wire Colors Wire colors for individual and common connections on fluorescent ballasts will vary depending on ballast type, brand, and the number of lamps they support.

Magnetic vs Electronic Ballasts Older magnetic fluorescent ballasts are usually wired in series. Series vs Parallel Ballasts and Wiring When a series ballast rapid start operates multiple lamps and one lamp fails, the circuit is opened and the other lamps will not light.

Series ballasts can only be wired in series according to the diagram on the ballast. Parallel ballasts can only be wired in parallel according to the diagram on the ballast. Changing the wiring on a fluorescent light fixture from series to parallel, involves changing the ballast from a series to a compatible parallel ballast. Wired in series. Wired in parallel. Grounding a Ballast Grounding a ballast is very important.Free Wiring Diagram. Variety of fluorescent ballast wiring schematic.

A wiring diagram is a streamlined standard pictorial representation of an electrical circuit. It reveals the elements of the circuit as streamlined shapes, and the power and also signal links in between the devices.

A wiring diagram typically offers info regarding the relative position as well as setup of gadgets and terminals on the tools, to assist in building or servicing the gadget. A pictorial layout would certainly show much more detail of the physical look, whereas a wiring diagram makes use of a more symbolic notation to highlight interconnections over physical look. A wiring diagram is usually utilized to repair troubles as well as making sure that all the connections have actually been made and that every little thing is existing.

Assortment of fluorescent ballast wiring schematic. Click on the image to enlarge, and then save it to your computer by right clicking on the image. A wiring diagram is a type of schematic which makes use of abstract pictorial signs to show all the interconnections of elements in a system. Circuitry diagrams are composed of two things: signs that stand for the elements in the circuit, and lines that stand for the connections between them.

From electrical wiring diagrams, you understand the relative area of the elements and just how they are connected. Wiring diagrams generally shows the physical position of elements and links in the developed circuit, yet not always in logic order.

To read a wiring diagram, first you need to know what basic elements are included in a wiring diagram, and also which pictorial icons are used to represent them. The typical components in a wiring diagram are ground, power supply, cord and also link, result devices, buttons, resistors, reasoning gate, lights, and so on.

A line represents a cable. Cables are made use of to attach the elements with each other. There ought to be a legend on the wiring diagram to inform you just what each color means.

Generally circuits with more than 2 parts have 2 standard kinds of connections: collection and also parallel. A collection circuit is a circuit in which components are attached along a solitary course, so the present flows via one part to obtain to the next one. In a series circuit, voltages accumulate for all components linked in the circuit, and also currents are the very same with all parts. In an identical circuit, each tool is straight attached to the power resource, so each gadget receives the exact same voltage.

The present in an identical circuit flows along each parallel branch and also re-combines when the branches reunite.


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