Fluorescent long time and become part of our lives, and now become the most popular, since electricity is constantly going up and the use of conventional incandescent lamps is becoming quite expensive.And energy-saving compact fluorescent lamps not everyone can afford, and modern chandeliers require a large number of them, which casts doubt on savings.That is why in modern apartments set more fluorescent lamps.
- device fluorescent lamps
- The principle of fluorescent lamps
- How to connect the fluorescent lamp?
- How to check fluorescent lamp?
device fluorescent lamps
To understand how a fluorescent lamp, you should study it a bit device.The lamp consists of a thin cylindrical glass flask, which may have a different diameter and shape.
lamps can be:
- compact (with E14 and E27).
Though they differ in appearance, one thing unites them: they are all inside the electrodes, fluorescent coating and up
The principle of fluorescent lamps
terminals gathered on the circuit voltage is 220 V, which passes through the throttle to the first spiral lamp, then goes to the starterwhich picks up and passes a current to the second coil connected to the network terminal.This is clearly seen in the diagram below:
Often, the input terminals of a condenser, which plays the role of a network filter.It was his work part of the reactive power generated by the throttle, is extinguished and lamp consumes less power.
How to connect fluorescent lamp?
Wiring of fluorescent lamps, the above is simple and is designed to ignite a lamp.To connect the two fluorescent lamps, it is necessary to slightly change the circuit, acting on the same principle as the series connection of all the elements, as shown below:
In this case, a two starters, one for each lamp.When you connect two lamps to one throttle to consider its nominal power, which is indicated on its body.For example, if it has a power of 40 W, then it is possible to connect two identical lamp having a load of not more than 20 watts.
There are also wiring diagram fluorescent lamps without starters.Thanks to the electronic ballast lamp ignition devices instantly, without the characteristic "blinking" with starter control circuit.
Connect a lamp to such devices is very simple: their body painted and detailed information is shown schematically, which contacts the lamp must be connected to the respective terminals.But that was not clear how to connect fluorescent lamps to the electronic ballast, need to look at a simple scheme:
advantage of this connection is the lack of additional elements necessary for starter control schemes lamps.In addition, with the simplification of circuits increases reliability of the lamp, as eliminates the additional wiring with starters that are also rather unreliable devices.
Below is the wiring diagram for the two electronic ballast fluorescent lamps.
As a rule, complete with electronic ballast device already has all the necessary wires to the circuit assembly, so there is no need to think of something, and to bear the additional costs for the purchase of the missing elements.
How to test fluorescent lamp?
If the lamp is no longer light up, the likely cause of a malfunction can be broken tungsten filament, which heats the gas, causing the phosphor to glow.In operation, the tungsten evaporates slowly, settling on the walls of the lamp.At the same time on the edges of the glass bulb appears dark patina, a warning that the lamp may soon fail.
How to check the integrity of the tungsten filament?Very simply, you must take an ordinary tester that can measure the resistance of the conductor and touch the lamp lead end probes.
instrument displays a resistance of 9.9 ohms, which eloquently tells us that the thread is intact.
checking a second pair of electrodes, the tester shows the complete zero, this party has an open bulb filament, and therefore does not want to light up.
Open spiral comes from the fact that over time the thread becomes thinner and gradually increases the voltage passing through it.By increasing the voltage fails starter - it can be seen from the characteristic "flicker" bulbs.After replacing burned-out bulbs and starter circuit should operate without adjustment.
If the inclusion of fluorescent lamps is accompanied by sound or smell of smoke, immediately disconnect the lamp and test the functionality of all its elements.There is a likelihood that the terminal connections slack formed and heated wiring.In addition, the throttle if poorly made, may be coiled-circuit winding and, consequently, the failure of fluorescent light.