4 Watt LED with 50 Watt equivalent light output 400 Lumens
Style is flame or round tip
Comes in gold or silver base
Dimmable
Life span is 12 years at 6.8hrs/day or 30,000 hours.
80% more efficient then incandescent
Soft, warm white light (2700 k)
Hidden heat sink
Return on Investment:
5 watt x 6 hours per day usage x 365 days = 10.95 kWh.
At 12 cents per kWh it will cost $1.32 a year to operate.
Subtract that from the $10.50 cost to run a 40 watt bulb saves you $9 per yr.
I have 16 bulbs so I will save $144 per year.
The current cost for 16 bulbs is ~$416 so I would get 100% ROI in 2.8 years.
Photo Gallery
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Sexy LED for review and teardown
One Sexy LED full on
One Sexy LED dimmed to lowest setting
Marking on packaging
Current test
1 minute trend on current shows 74 mA
Zoom in on current trend to see small ripple.
Current average was 74 mA
120V x 0.074A give 8.76 watts. Higher than advertised 5 watts!
K type temperature probe on metal heat sync to read operating temperature.
Used in my hall for 3 months. Look very nice!
Probing operating temperature.
operating temperature trend started
operating temperature trend finished.
K type temperature probe set to read operating temperature of glass bulb
operating temperature of glass bulb is 51.6C
Close up of the six LEDs once glass is removed.
Setup to read operating temperature of LED substrate
operating temperature of LED substrate was 71.5C after 10 minutes.
operating temperature of LED substrate trend plot.
Thermal conductive pad between LED substrate metal and metal heat sync.
Removing the electronics package
Some kind of SMPS circuit
power circuit
power circuit with large cap and transistor removed
power circuit
power circuit
power circuit
Large Cap
Transformer
LEDs See datasheet for LEMWH51W80MZ30_5152
LEDs See datasheet for LEMWH51W80MZ30_5152
LED substrate
LED substrate
LED top view
Testing just LEDs using bench power supply
Testing just LEDs using bench power supply. Ran at 18A 300 mA but normal light output was 15V 40 mA