Questions tagged [supercapacitor]
Very high energy-density capacitors, typically measured in farads.
374 questions
-2 votes
2 answers
116 views
Looking for Reference Circuits that Use Supercapacitors
I’m looking for schematic references or design examples to understand how supercapacitors are typically integrated into electronic circuits. I want to use Supercapacitors as a power backup for ...
2 votes
1 answer
157 views
Power an IoT device with super capacitor
I want to make a device which works on DC, it consumes 2 W. It continues working mode. With the help of a solar cell and a lithium ion battery we can operate it. If I want to replace the battery with ...
0 votes
0 answers
66 views
ESP32 charging circuit from RPI with supercapacitors
I’m working on a small project and would love a sanity check on my schematic (will attach below) — especially from anyone experienced with ESP32 power design and supercapacitor setups. Goal: I want an ...
1 vote
2 answers
153 views
How to upgrade solar charger circuit in order to prevent night discharge?
At the moment I have a solar charger circuit (shunt regulator for overcharge protection) that charges battery (LIC) from PV and it works nice. But there is a problem with night discharge. I measured ...
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2 votes
4 answers
272 views
How to make supercapacitor charger with overcharge protection?
Solar Panel 6V (https://aliexpress.ru/item/1005006020071511.html?sku_id=12000042919843716) LIC capacitors 4V 200F (https://item.szlcsc.com/3567431.html?lcsc_vid=...
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3 votes
1 answer
94 views
Supercapacitor test scenarios
I have got 2 supercapacitors and both of them are 2.7 V 3000 F. I need to create two test scenarios for these two capacitors. Voltage Regulation Test: Scenario: Absorption of voltage fluctuations in ...
- 31
2 votes
0 answers
102 views
Low Charging Current Requirement for Supercapacitor Array
I'm having trouble understanding how high ESR affects the charging current of supercapacitors. I also need some equations to help clarify this. I’m using a supercapacitor array: 7 capacitors in ...
- 649
1 vote
5 answers
179 views
how to get 9V 1.5A to drive a solenoid?
I want to drive a mini solenoid that pulls a springloaded lever. I've tested the solenoid in this setup with a benchtop power supply and it works correctly when using 9V 1,5A. This power burst only ...
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1 vote
1 answer
88 views
Raspberry Pi Pico + solar power : Pico won't power up even though VSYS rises above 3V
I have a Raspberry Pi Pico powered by solar panels and super capacitor. Experiment 1: Power Pico using solar. VSYS rises to 5.09V after some minutes and onboard green LED comes on as the voltage rises ...
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1 vote
3 answers
320 views
How does this solar-powered blinking LED circuit with BPW34 PIN diodes work?
I have an image of a blinking LED circuit powered by sunlight, using an array of BPW34 PIN diodes to charge what I think is a supercapacitor. It appears to be an energy harvesting project. I’d like ...
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3 votes
2 answers
992 views
How Much Current Can a Supercapacitor Reliably Supply for a Few Seconds?
I am using a motor that requires 20 Amps at 75 Volts. The motor may consume up to 45 Amps for short periods of time, also at 75 Volts. Assuming I already have a battery pack that can supply 20 Amps at ...
- 111
0 votes
0 answers
106 views
Buck-Boost (LT8390) Charging a Supercapacitor
I am using the LT8390 as a supercapacitor charger for a 5S10P configuration of 20F capacitors. Based on the datasheet, this chip supports supercapacitor charging. I understand that the capacitors need ...
- 649
0 votes
2 answers
170 views
Replacment for supercapacitor
I have a design that uses a Elna super capacitor to backup a real time clock (RTC). The supercap is being discontinued and I can't find a suitable replacement. It seems this entire market is shutting ...
- 109
2 votes
1 answer
139 views
Trying to design a circuit to power an MCU that demands high current pulses
I'm trying to model an MCU powered on batteries. The MCU will be sending data over BLE, so it will pull a large amount of current; more than the maximum discharge current of the battery. To solve this ...
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1 vote
1 answer
321 views
Supercapacitor Balancer Circuit
I’m working on a balancer circuit that’s part of a supercapacitor charging system, but I’m having trouble understanding how it works. Specifically, I’m confused by how the values of V1-VA and VE-SCAP ...
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