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Ultra low power flashing LED Circuit – lasts 2+ days after 30 minutes of direct sunlight 13
Ultra low power flashing LED Circuit – lasts 2+ days after 30 minutes of direct sunlight
Ultra low power flashing LED Circuit – lasts 2+ days after 30 minutes of direct sunlight from electronics
This circuit uses a small solar cell to charge two 3.3F 2.7v supercapacitors in parallel. Thanks to the fact that the circuit uses a crude capacitive boost converter (not sure if that’s the right term) it can drive LEDS/components with forward voltages up to about 4.5 volts at a modest current even when the capacitors are down to about 2.2 volts. This means any color of LED should be useable.
You should do a free-formed circuit like this one: https://old.reddit.com/r/electronics/comments/r98e9f/first_attempt_at_a_freeformed_circuit_using_0603/
and then cast it in clear epoxy.
What software is that simulation in your video?
Cool project! What is your use case for this device?
Neat circuit. It seems similar in concept to the LM3909.
Very cool.
What’s the app name you used to sim it?
What software do you use? Never seen this one before
Very nice!
Reminds me of an IC LM3909 that is now deprecated. It powers an LED even from 1V and it’s main purpose was to blink LEDs from a single battery as long as possible.
The data sheet shows the internals, at hackaday there is a project that build the equivalent of an LM3909 from discrete components: https://hackaday.com/2018/01/04/there-once-was-an-ic-dedicated-to-blinking-an-led/
Very nice! What simulation software do you use?
What software are you using ?
Could you post a complete schematic: solar cell, charging parts, overcharging prevention parts, Zener voltage limiter parts, etc. along with some part designations? I would like to build something like this but am not talented enough to build it from the schematic I can see in the video.
What software are you simulating on? I’m curious
This is truly incredible.