Safety and Handling Instructions for our Inverters
Please read the following instructions to be sure using our inverters as specified and without a risk.
- Cold cathode fluorescent lamps (CCFLs) and electrodeless fluorescent lamps (EFLs) require an electronic driver circuit, called inverter. This inverter must be able to generate the necessary start-up voltage in dependence of length of a certain CCFL or EFL. As soon as a CCFL or EFL got its gas ignited inside to a plasma, voltage decreases to its working voltage.
- Start-up voltage is about 2-3 times above working voltage. E.g. a CCFL with the dimensions of 300mm length and 4.1 mm diameter requires a working voltage of about 600 Volt AC.
- The supply voltage of an inverter of e.g. 12 volt DC should be kept and not be exceeded for more or less than 10%. Malfunction or an overheating could be the consquence if not obeyed.
- For EFL and CCFL the application of sinusoidal AC waves of about 40 - 100 kHz is recommended for an optimum of lifetime and luminance. Other waveforms (triangular, square, etc.) may lead to a considerable decrease of lifetime.
- Inverters should never be driven without load. Otherwise you are in danger to provoce an electric arc light between the 2 output electrodes with all its consequences. If your inverter has ouputs for 2 lamps both must be loaded, too.
- Inverters with multiple ouputs should be driven with symetric loads, means with lamps of the same dimensions and specifications.
- The wires between lamps and inverters should be able to resist both, the high start-up voltages and the AC current of 40 - 100 kHz, e.g. by use of silicon cables.
- Wires between inverters and lamps should never be bundled because of a capacitive coupling and loss of energy between the cables. The same applies to cables of different inverters and lamps. Recommended min. distance of cables is about 10 mm.
- The cablelength between inverter and lamps should not exceed 1m, its better to stay below. Its recommend to shorten the cables to ist optimal length and to avoid crossings, loops and coils.
- Unsealed inverters are for indoor application, only! Avoid using using the inverter under high humidity or in an environment in which dust, dirt or any corrosive gas (salt, acid, base, etc.) is present. Do not allow the formation of dew condensation!
- Take care that nobody is able to touch the output electrodes of a working inverter!
Besides the danger of an electrical hazard there is the danger of burning your skin by a sudden electric arc light.
- In an environment that is sensitive to EM radiation you should take care for a certain absorbtion of the inverters EM wave production, e.g. a grounded housing of metal. Exempted are the piezo inverters which have a extremly low EM radiation.
- Be aware of the problem of short-circuiting the inverter, when guiding the cables to close through metal housings. The combination of high voltage and highfrequent, alternate current always looks for its shortest way to escape!
- Inverters may heat-up to around 50°C depending on load. In applications which are sensitive to temperature (e.g. wood, plastics, etc.) a proper heatsink may be required.
- Our unsealed inverters are not designed for application in a radioactive environment of alpha-, beta-, gamma-, or even strong UV-C radiation.
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