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2 Electronic starters
In principle the electronic starter or ignitor is working in the same
manner as the glow-switch starter. But now the switching does not
come from bi-metallic electrodes, but from a triac.
The electronic circuit in the starter gives a well-defined preheat time
(1.7 sec) for the lamp electrodes and, after the preheat,a well-defined
peak voltage, which ensures optimum lamp ignition.The heart of the
electronic starter is a customized integrated circuit, containing the
intelligence of the product.It makes the starter switch off after seven
unsuccessful ignition attempts, so it is called ‘flicker free’.
The electronic starter also contains an over-heating detection by
means of a PTC resistor, to switch off in case the starter becomes
too hot (e.g. with a short-circuited ballast).This second stop function
resets after approx. 4 minutes.
The electronic starter extends the lamp lifetime up to 25 per cent on
account of the well-defined preheat time.The exact digital timing makes
the electronic starter independent of mains voltage fluctuations.
In the Philips programme there are two types of electronic starters:
one in the canister of the glow-switch starters (two-pin types S2-E and
S10-E Perform version), and one in a plastic housing (four-pin type ES08).
Lifetime
The lifetime of fluorescent lamp starters is expressed in the number
of switches.
At present the glow-switch starters have a lifetime of 10 000 switches
or more, while the electronic starters have a lifetime of 100 000 switches
or more.
Components
A customer primarily needs a solution to his lighting requirements.
Basically,he needs two things to obtain an installation which completely
fulfils his specifications: a design and components.To make sure that
the installation works properly under all circumstances,the right
components must be chosen and selected in combination with each
other.
In principle the following components are required in a lighting
installation:
- lamps,
- lampholders,
- luminaires,
- gear (ballasts, starters),
- compensating capacitors,
- cabling,
- fusing and switching devices,
- filter coils (if necessary),
- dimming equipment (if possible and required).
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SYSTEMS
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2.2 Starter types