All Questions
Tagged with supercapacitor capacitor
96
questions
0
votes
1
answer
68
views
Cyclic Voltammetry for a Capacitor - Positive Current, Potential is decreasing?
In the boxed red region, why is the potential decreasing when the current is still positive? To my understanding, when the current is still positive (i.e. not changing direction), the capacitor will ...
0
votes
1
answer
58
views
Wide input voltage capacitor charging control
I'm working on a project in which we are using a bank of inexpensive 100 μF caps (up to 20 of them) to keep a microcontroller powered up long enough to do housekeeping for shutdown when the main power ...
0
votes
1
answer
102
views
Wire size for 16 V, 83 F capacitor [closed]
I have a capacitor bank circuit (16 V, 83 F). I got it from AliExpress. I am planning to install it in my car parallel to my car battery (car battery capacity: 12 V, 50 Ah). Could you please suggest ...
0
votes
2
answers
136
views
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 ...
0
votes
2
answers
73
views
Replacing Li-ion battery in a game controller with a supercapacitor
My game controller's Li-ion pouch battery is swollen and has died. I was thinking if it was possible to replace the internal battery with capacitor/supercapacitor. I don't need the wireless ...
0
votes
0
answers
50
views
Charging a super cap with a Li-po battery while maintaining charge
I have a 3 V 100 F capacitor and 400 mAh 35 C battery, the battery is to be charging the super capacitor and maintaining charge until a button is pressed to discharge the super cap. I am stuck with ...
1
vote
0
answers
178
views
Super capacitor causing overcurrent protection
I'm making a power-supply circuit for some MCUs using a battery charging-discharging protect module MH-CD42 (both input and output is 5 V).
The module's datasheet says it has a 0.3 seconds switch time ...
0
votes
0
answers
251
views
How can I simulate a super capacitor in LTspice?
I am trying to simulate a super capacitor in LTspice but it is not giving me the correct discharge time as it should be theoretically.
Has anyone also faced this issue? Please let me know how to ...
0
votes
0
answers
155
views
Super capacitor discharge protection
We are developing an active RF timing tag which uses a 3 V 20 F super capacitor as a power source. We will charge the tag at the time of registering a participant. The charge time should be as short ...
0
votes
0
answers
129
views
What can cause a capacitor/supercapacitor to not charge up to source?
I'm doing a project that involves charging an experimental supercapacitor with a 9 volt battery and then turning a red LED on with it.
Now, I've asked around what determines to what voltage a ...
5
votes
1
answer
290
views
Any thoughts on a supercapacitor battery project?
Just some insight: I am fifteen and have been researching capacitors for a while now.
I have come up with the idea of building a supercapacitor power supply unit solely to power some small electronics ...
1
vote
2
answers
385
views
Powering ESP32 and two MG90S using supercapacitor
I'm working on a drone-dart project.
Dart is controlled by an ESP32CAM and two MG90S servo motors. It is raised to the sky by a drone and then released. The dart falls while attempting to aim itself ...
1
vote
1
answer
432
views
Help with supercapacitor charging circuit
I need to design a circuit to charge a capacitor from 0 to 2V. The circuit should not be that complicated and no matter the type of capacitor, it should never exceed 2.7 V when charging. The capacitor ...
1
vote
2
answers
49
views
Inverse temporal power-law increase of DC voltage under the application of constant DC current
Is there any material in which the DC voltage follows an inverse temporal power-law increase, under the action of a constant DC current? This implies a situation in which a constant current, I, is the ...
0
votes
1
answer
86
views
How to spec a power supply for capacitor charging given the simulation and large requirements?
I am using the LT3751 as a capacitor charger for a large capacitor (30mF) and am trying to get an idea of the kind of power supply I would require in order to come close to the simulation charge time. ...