All Questions
Tagged with supercapacitor solar-cell
15
questions
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2
answers
136
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Test circuit for a solar panel used to power a supercapacitor
I was hoping to power a device with a supercapacitor that would provide power when there isn't light available, so essentially I just need the solar cell to charge the supercap as fast as it would ...
- 11
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votes
1
answer
138
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Boost converting 0.5V PV output to charge a super capacitor
I want to charge three 2.5V 700F super capacitors in series (7.5V total) to a precise 6V so that I avoid overcharging a single capacitor in the string. (Conservative 80% voltage to avoid having to ...
- 253
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68
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Component protection and charge optimisation for Solar + Supercapacitors
What are the best protective practices for solar cells and supercapacitors when they are used for small outdoor projects? Moreover, are there any way of widening the useable voltage output range of a ...
- 506
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140
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Simple through-hole voltage supervisor
I'm trying to power a microcontroller (ESP8266) from a solar cell and a supercapacitor. It might or might not make sense, but it's a hobby project.
The thing is - ESP8266 doesn't boot if the voltage ...
- 291
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answer
72
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Solar -> Supercapacitor efficiency considerations
So, basically, using high voltage series solar-solar panel arrangements and a buck-converter to step down to 2.7V for a supercap array.
Vs
Using a parallel solarpanel arra with a voltage close to a ...
- 196
1
vote
3
answers
775
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Schottky diodes in series to reduce maximum voltage at supercapacitor solar charging circuit
I use the following circuit to store solar energy harvested by photodiodes into a supercapacitor. The cap is rated at maximum 2.8V. The zener diode is rated at 3V, but depending on the harvested solar ...
- 13
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votes
1
answer
1k
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How much capacitance/joule/watt is needed on average household' energy storage system with supercapacitor?
I am on the process of making assumption how much capacitance/joule/watt is required on average supercapacitor as household' energy storage system. I plan the design for energy hub to be charged by ...
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33
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How to do high switched current from small solar
I am working on a small, solar-powered application that makes use of RF and a few higher-power sensors. Those will only be on for a fraction of the time, but might consume 1A-2A at 3.3V.
The ...
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2
votes
2
answers
3k
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Solar charging with a super capacitor buffer
I have a 20W 5V solar panel (real output more like 10W in bright sun). Would like to harvest as much solar power as possible to a power bank to power a bluetooth speaker (< 5W consumption). Bright ...
- 123
1
vote
1
answer
189
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How should I sense the presence of current in Solar-Supercapacitor circuit?
I am trying to measure the presence of sunlight through current sensor circuit. I don't want to use LDR as it may give a false alarm if something occludes the small LDR window. Will using the board ...
- 75
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answer
441
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What will be the output/discharge current of a capacitor? [duplicate]
I am planning on doing an experiment where I want to connect a 2V 500mA solar panel to a 25F 2.7V super capacitor and then I will connect it to a 5V output boost converter. I know the capacitor output ...
- 23
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3
answers
2k
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Using Super Capacitors with solar cells and batteries to help save my dogs
I am looking to make a dog feeding mechanism that will operate regardless of power outages. The main point of this query initially is to figure out how to work with the materials I have (or can get) ...
- 53
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2
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11k
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what size supercapacitor do i need to replace 4 3.7v 2400mah batteries?
I have a 5v 2amp external usb battery pack that dis/charges 4 18650 vape style batteries. Each is 3.7v 2500mah.
My Question is, what size supercapacitor would replace the batteries, preferably more ...
- 19
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1
answer
2k
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How can I modify the charging circuit of the solar powered system using super-capacitor with or without battery (diagram is attached)?
I 'm working on a device which according to the below diagram, has a solar panel witch gives at most 10v voltage and 30mA current (average 9v and 20mA) and also it has a 6v lead acid dry battery with ...
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votes
3
answers
2k
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Solar cell powered supercapacitor charger with strange output voltage regulator problem
I have a strange problem in a low power circuit design. I designed a buck-boost converter as a maximum power point tracking circuit (control the output of solar cell within a small voltage range ...
