Led
20,000 hrs 4*6000 hrs 4x of CFL,
12W EVEREADY BULB 6500K,
Highest lumens mean higher bright light
Total amount of light coming from a source measured in lumens (lm)
Light source efficiency measured amount lumens generated for consuming of watts
LM/watts,
Higher LM/w more efficient light source,
1200 lumens – 100lm/w
Inbuilt cc driver ensures constant light output,
Wide operating voltage 130_280v,
A 12watts led saves 40% more energy than 20w CFL,
I have noticed less lumens in 20w CFL and less brighter than 12w led,
Mercury free,
20,000 hours 15 years life,
But CFL gives 1-year warranty, long last as up to 5 years,
Types of led lights
Cool day
Pearl white
Gold yellow,
Cost of led light 6500k 599INR $10 approximately,
Warning& caution
- Not to use with dimmers
- Not for use in totally enclosed fixtures,
- For indoor use only (-15to 40c)
- Only operates with Ac power supply,
- Turn off light before changing the lamp.
- Do not touch when lamp is on
- Electro \magnetic ballast consumes 16 watts or more per hour.
- electronic ballast consumers up to watts / hour.
T8 vs T12 vs T5 bulb comparison & difference CFL
Measure | T12 | T8 | T5 |
Watts/hours (power consumption) | 40 | 36 | 25 |
Lumens (light output)/watt | 75 | 90 | 100 |
Temperature Kelvin K | |||
CRI (Color Rendering Index) | 62 | 80 | 80 |
Price | 40 | 50 | 150 |
lifetime hours | 10k | 10K | 15K |
- Special ballast need for t5 lamp 500INR for 10k hours.
- stand 300, 150 INR ballast 50K hrs, 20INR 500hrs
50 volts x 2 amps = 100 watts
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