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Electronics => Projects, Designs, and Technical Stuff => Topic started by: Lucky-Luka on June 01, 2021, 09:06:46 am

Title: Solar powered 2 pin RGB LED
Post by: Lucky-Luka on June 01, 2021, 09:06:46 am

Hi all
I have an RGB LED led that needs more or less 3 volts to perform correctly its light routine.
Can I use for my project a 3.3V zener diode?
Only using the rectifier diode and the cap as a buffer the voltage would be a rather constant 4.8V.
Cheers

Title: Re: Solar powered 2 pin RGB LED
Post by: tszaboo on June 01, 2021, 10:14:47 am

There are constant current diodes, that do this. They pass 20mA or 40mA or whatever its setting. On semi makes them for example.

Title: Re: Solar powered 2 pin RGB LED
Post by: Lucky-Luka on June 01, 2021, 11:43:24 am

I think this is not a proper solution for my problem.

Title: Re: Solar powered 2 pin RGB LED
Post by: NiHaoMike on June 01, 2021, 01:04:34 pm

Just increase the capacitance and inductance. Try at least 470uF for the capacitor.

Title: Re: Solar powered 2 pin RGB LED
Post by: tunk on June 01, 2021, 02:29:18 pm

Are these any help:
https://youtu.be/FsA79XdV1wk
https://youtu.be/wHje7_suqE0