This is my first post as electronics are not my main focus. I know from reading many posts that LEDs are a main question for multiple users. Hopefully, I did not overlook the answer to my question on a previous post.
Here are a few things I am looking at or considering:
1. I am looking to run a 470nm LED (blue/blue-green wavelength) off a capacitor for an extended period of time. I want to use a capacitor since there will be an extended period of time in between uses (could be months) and batteries can get a memory if not stored correctly.
2. I am also looking at the aspect of speed of charging which, if I did my research correctly, can be achieved with capacitors.
3. Also, this will be in a sealed system so I will not be able to change batteries.
4. I was thinking a 1-1.5F capacitor for supply to a single LED but unlike most uses I want to dim the output of the LED (not sure how to calculate lumens) and am hoping this will extend the burn time. Could a thrysistor/ joule thief help the run time?
5. Size is a big factor but can be adjusted for off the shelf components to keep the cost down.
6. This is a project I am wanting to market if possible depending on cost as this is only part of the entire project.
I have approached several firms on designing this for me but the responses I get are less than I was hoping for (either too simple to waste their time or WAY too expensive for me to afford). If this is not the appropriate forum then I apologize but let me know either way as I am trying to figure this out a.s.a.p.
Or, if possible, direct me in the right direction to get this accomplished in a less expensive manner
Thanks in advance!
Here are a few things I am looking at or considering:
1. I am looking to run a 470nm LED (blue/blue-green wavelength) off a capacitor for an extended period of time. I want to use a capacitor since there will be an extended period of time in between uses (could be months) and batteries can get a memory if not stored correctly.
2. I am also looking at the aspect of speed of charging which, if I did my research correctly, can be achieved with capacitors.
3. Also, this will be in a sealed system so I will not be able to change batteries.
4. I was thinking a 1-1.5F capacitor for supply to a single LED but unlike most uses I want to dim the output of the LED (not sure how to calculate lumens) and am hoping this will extend the burn time. Could a thrysistor/ joule thief help the run time?
5. Size is a big factor but can be adjusted for off the shelf components to keep the cost down.
6. This is a project I am wanting to market if possible depending on cost as this is only part of the entire project.
I have approached several firms on designing this for me but the responses I get are less than I was hoping for (either too simple to waste their time or WAY too expensive for me to afford). If this is not the appropriate forum then I apologize but let me know either way as I am trying to figure this out a.s.a.p.
Or, if possible, direct me in the right direction to get this accomplished in a less expensive manner
Thanks in advance!