Recent content by Alfredo722
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8 small 3-volt hobby motor/generator harvesting
I haven't really checked out too many of them to be sure. My focus has been to at least keep the lights on through the night. In that regard something is better than nothing. As stated before apartment dwellers have little recourse when it comes to charging small devices.- Alfredo722
- Post #23
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
Thanks for the video. In my humble opinion a vertical type wind generator is best suited for a boat, maybe using an old ceiling fan as an alternator type base. My thing is charging batteries so sticking to D.C. Is best for me.- Alfredo722
- Post #20
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
The current prototype shaft is supported at both ends. Using the mag coupling would make it cantilevered, correct? Sorry but your link is not showing.- Alfredo722
- Post #17
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
Before I began I set up certain milestones and rules, one of which was that the first generation had to be made with off the shelf items. Hence the small 3 volt hobby motors off the shelf charge controllers and sweat. Small solar panel etc. I have many neodymium magnets and the hematoma to...- Alfredo722
- Post #15
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
Yes it is.- Alfredo722
- Post #13
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
Have I "measured the energy loss from your ratio up-gearing"?. I guess you mean, have I taken into consideration the back emf, weight of drive components such as turbine, drive plate, moment of inertia, angular momentum etc. yes. The drive plate is imperfect and unbalanced. So my first run...- Alfredo722
- Post #11
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
My goal is to be able to charge 4 AA 1.2 volt 2500mAh rechargeable batteries; through out the day in order to use the batteries for up to 4 to 5 hours a night. I'm looking to see if i can satisfy the bare minimum requirements for charging small devices and or powering enough LED's to light a...- Alfredo722
- Post #9
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
Thanks for the link. I was hoping to combine the solar and motor/generator output through a solar charge controller, the link indicates there's a problem with that, most likely i will need 2 separate controllers. thanks again- Alfredo722
- Post #7
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
Sorry for the vague question. I would like to charge 4 AA batteries using the wind to turn a turbine that rotates a large plate that then rotates the 8 separate 3v motor/generator. I've built a prototype and am not sure how to insure that each output from each motor can be stored and utilized...- Alfredo722
- Post #5
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
can you direct me to an example?- Alfredo722
- Post #3
- Forum: Electrical Engineering
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8 small 3-volt hobby motor/generator harvesting
How difficult would it be to harvest the electrical out put of 8 small 3 volt motor/generator?- Alfredo722
- Thread
- Generator Harvesting
- Replies: 23
- Forum: Electrical Engineering
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Piezo and solar charge controller
Can I coax a solar charge controller to accept output from 16 piezo transducers, (20mm buzzer type disk piezo elements). The charge controller has an LCD display with readouts for voltage and amps.- Alfredo722
- Thread
- Charge Controller Energy harvesting Piezo Solar
- Replies: 1
- Forum: Electrical Engineering