Philips Electromagnetic Lamp manual 144

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3.17 Stroboscopic effect and striations

Fig. 138. The 20 msec frame integration time of a CCD colour camera with the automatic shutter switched off, compared with the 100 Hz fluorescent light ripple.

100Hz fluorescent light ripple

20ms

normal shutter time

Fig. 139. Using the automatic shutter and with the camera locked to mains frequency, it is possible to shoot stable and white pictures.

frame is shot during the non-saturated excitation of the fluorescent light, see Fig. 139.

It can be said, that the light at this point in time is not white and the light output is less. If the phase of the camera shutter remains constant with respect to the mains phase, the automatic light control and the white balance circuits in the camera will compensate for these effects and stable pictures are produced.This situation is obtained by locking the camera frame synchronisation to the mains (mains lock). When there is no fixed phase relation between the scanning frequency of the camera (free running) and the mains frequency, the camera will take a snap-shot of the scene at varying phases of the fluorescent lamp light output.This causes a colour fading to become visible.The extent of colour fading is depending on the lighting design of the area.

In applications where the scene is illuminated with just one fluoresecent lamp or other gas-discharge lamp, stabilised by conventional gear, the colour fading risk is at its maximum. It is recommended that cameras be locked to mains frequency and the phase of the camera synchronisation be adjusted such that the camera signal output is maximum. If mains lock is not possible in such an application, the lens iris should be closed to the point where the colour fading just disappears. Now the shutter speed is less (full frame integration) and the additional benefit is that the sensor smear effect is less.This solution cannot be used in applications that need short shutter speeds to suppress movement blurr.

In all other cases (combination of inductive and capacitive circuits, three-phase installation of high-frequency stabilised) this phenomenon will not occur.

light integration

short shutter time

mains lock fase

20 ms

3.The movement of the arc on the electrode(s) (flicker) has no fixed frequency and will only become noticeable in exceptional cases. It

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Contents Ignition and re-ignition Main ballast functionsStabilisation 107Ignition and re-ignition Types of ballasts108 Resistor ballastsCapacitor ballasts 109Types of ballasts Inductive ballasts or chokesBallast specification and marking 110111 Maximum coil temperature tw and ΔTBallast specification and marking Watt losses 112Starter types Glow-switch startersMain starter function 113114 Starter types115 LifetimeComponents Electronic startersComponents Capacitors116 Discharge tube Starter Capacitor Ballast Thermal protector117 IEC Filter coilsCapacitors Filter coils Power factor correction119 Power factor correction 120Lamp factor = lamp wattage / lamp voltage . lamp current Sin121 122 Placed in series with one of the ballastsSeries connection of lamps 123Series connection of lamps Neutral interruption and resonance124 Good neutral is essential125 Neutral interruption and resonance126 Electrical diagramsPL-TSC 4-pins PL-S, PL-C starter incorporated Electrical diagrams127 ‘TL’D, PL-L128 Mains voltage interruptions and short-circuitingHarmonic distortion Mains voltage interruptions and short-circuiting129 Harmonic distortion130 Ninth harmonicReinforce each other Electromagnetic interference131 132 Electromagnetic interferenceMinimum temperatures Lamps Ambient and operating temperaturesAmbient and operating temperatures 133Gear Maximum temperatures Lamps134 LuminairesStarters 135Ballasts Effects of mains voltage fluctuations 136Electrical wiring 137See IEC 598, section Electrical wiring138 Hum 139Dimming Dimming140 141 Coil in series and by a thyristorStroboscopic effect and striations Stroboscopic effect and striations142 For this subject, see also section Lamps143 144 Standard conditions Circuit breakers, fusing and earth leakage145 According to CEE-19-2ndedition L, U and K 146Main circuit breakers work on two principles Short-circuiting of the lamp 147Non-standard conditions Short-circuiting of the ballastShort-circuiting of the parallel compensating capacitor 148Short-circuiting of the ignitor Short-circuiting of the series capacitor149 Fault findingCircuit breakers, fusing and earth leakage 1AVisual inspection of lamps150 Electrical tests Fault finding Fault IV lamp flickers151 Fault finding 152Type ballast should be used Installation aspects153 154 MaintenanceNon-standard supply voltages Non-standard supply voltages

Electromagnetic Lamp specifications

The Philips Electromagnetic Lamp is a transformative lighting solution that enhances both indoor and outdoor spaces. Designed to integrate cutting-edge technology with energy efficiency, this lamp offers a range of features tailored for diverse applications, from residential to commercial use.

One of the primary features of the Philips Electromagnetic Lamp is its powerful electromagnetic technology. This technology allows for efficient energy conversion, resulting in superior light output while consuming minimal electricity. The lamp is engineered to provide a high lumen per watt ratio, making it an environmentally friendly choice for those looking to reduce their carbon footprint without compromising on brightness.

The durability of the Philips Electromagnetic Lamp is another significant characteristic. Built with robust materials, it is designed to withstand various environmental conditions. Whether exposed to heat, moisture, or dust, this lamp guarantees longevity and reliable performance. Additionally, its resistance to temperature fluctuations makes it ideal for a range of settings, including industrial environments where resilience is essential.

In terms of versatility, the Philips Electromagnetic Lamp shines brightly. It is available in multiple wattages and color temperatures, enabling users to select the perfect lighting for different spaces. From warm white shades ideal for cozy home environments to cooler, brighter options suited for workspaces, this lamp adapts to individual needs and preferences.

Moreover, the lamp incorporates advanced light distribution technology. This ensures an even spread of light without dark spots or harsh glares, enhancing visibility and comfort. It is particularly beneficial for large areas needing uniform illumination, such as warehouses, parking lots, and public areas.

Another key feature is its compatibility with smart lighting systems. Many models of the Philips Electromagnetic Lamp can connect to smart home platforms, allowing for remote control, scheduling, and automation. This modern integration enhances user convenience and promotes energy savings by enabling users to optimize their lighting usage according to their routines.

In conclusion, the Philips Electromagnetic Lamp is a perfect blend of efficiency, durability, and advanced technology. Its electromagnetic capabilities, long-lasting construction, diverse options, and smart compatibility make it an outstanding choice for anyone seeking a sustainable lighting solution without compromising on performance.
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