Some information on what current and resistors to use. The LEDs are all in parallel and need about 3 Volts, current limited with a resistor. https://www.facebook.com/reel/909951727389682?mibextid=9drbnH&s=yWDuG2&fs=e
Archive for the ‘Lighting’ Category:
2024-04-06 The Flexible LED Filament
This YouTube short demos a flexible LED filament and shows how to configure it for 5VDC.
2024-02-28 Smart Plugs, Power Strip
This is IoT internet of things. You can turn something on or off from anywhere. You can schedule it to turn on or off at certain times. Says, “…made my life 1000 times easier.” https://www.huffpost.com/entry/kasa-smartplugs-sale_l_65dcb876e4b0e4346d533b5d/amp
2023-11-13 Dolivo-Dobrovolski, A Contemporary Of N. Tesla, Invents 3-phase Generation In Germany.
Kathy tells about Dolivo-Dobrovolski, a contemporary of N. Tesla, invents 3-phase generation in Germany. History Of 3-Phase Electricity And It’s Distribution
2023-10-16 Newsom Signs Powering Up Californians Act Into Law
Helping electrify California by reducing time. Sounds like it’s supposed to smooth over the bureaucratic red tape. Powering Up Californians Act Is Signed into Law
2022-04-20 Philips Ultra Efficient LED Light
Big Clive tears down and reverse engineers a Philips ultra efficient light bulb. It’s 60 watts equivalent but draws only 4 watts. It has a color rendering index of only 80, and costs about ten Pounds UK or about $13 US. This uses 8 filament strings of LEDs and the filament string drops about 200
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2022-04-01 Residential Energy Survey
There are still a lot of CFL and incandescent light bulbs being used. https://cleantechnica.com/2022/03/31/47-of-u-s-households-use-led-bulbs-for-all-or-most-indoor-lighting/
2022-03-20 LED Lights May Not Last As Long As Incandescent Lights
The lifetime of incandescent and LED lights is extremely dependent on the temperature at which they run – for incandescents, GE says it’s the inverse of the 7th power of the voltage – the voltage increases and the lifetime decreases. In the case of LEDs the problem is most designs sacrifice thermal management to get
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2022-01-22 LED Xmas Light String Repair
A string of LED xmas lights had been fritzing on and off, then it finally failed. I had to pull out 4 lights before I found two that were dead. I had to file off the ridge around the base to get them to fit properly into the base. So it’s back working again. It
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2021-08-25 LED Streetlights Are Killing Moths In England
LED streetlights are decimating moths in England. The LEDs have blue light which insects use to see. The moths are pollinators like bees plus they’re food for many animals. There are a number of solutions for mitigating the problem. The blue light can be filtered out, among other things. My thinking is that the streetlights
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