Price: $12 at discount retailers Recommended: not recommended Also available: multicolor sets, sets with diffusers
Philips is a major figure in the lighting industry, so I had high expectations when I picked up two sets of their Christmas lights to review. Let me get right to the point of this reviewI dont recommend this product. Read on to discover why not.
The packaging certainly looks nice.
Immediately from the information on the package you can make some intelligent guesses about how this system is electrically connected. 60 LEDs, 115VAC, and 40 mA seems to add up to two series strings of LEDs. In our previous article about driving LEDs from AC , We discussed the idea that rectifying the AC would double the effective brightness.
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I have not had time to verify it on my bench, but there appears now to be a rectifier included, which I have not had time to verify it on my read? Overcoming one of my biggest complaints about the set. Stay tuned for further updates.
But the approach this set takes is to use two strings of 30 series LEDs connected in opposite polarity across the AC source, so that only 30 of the 60 LEDs are lit at any given time. Theres a certain elegance to the minimalism of that, but It produces a perceptible flicker in the lights.
The advantages of LEDs.
Lets take a step back and look at the products basic features. This is a string of LED holiday lights. The package proclaims the LED advantage
Advanced LED technology Bulbs are fade, chip, peel, and break resistant Cool to the touch when lit Ultra low power usage (4.8 Watts) Up to 76% power savings compared to super bright mini sets 25,000 hour average bulb life Connects end-to- End Bulb locking feature
The package was such that the LEDs have a fairly narrow view angle, so when viewed off-axis they are substantially Some variations are available where plastic diffusers in holiday shapes (snowflakes, icicles, and amusingly, C9 bulbs) are fitted to the LEDs. These sometimes would show less variation in brightness with a changing view angle.
The narrow view angle leads to a lot of variation in brightness.
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