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Super Capacitor Charge Controller Kit

5.83
Exclusive to Kitronik
Teaching Notes
Key Stage 3/4
Use this kit as a rechargeable power source for your Electronic projects. Connect the kit to a USB port to charge the 1F Super Capacitor in roughly one minute!

Availability: In Stock.

Code1+ 5+ 50+
2137£5.83
(£6.996 incl VAT)
£4.55
(£5.46 incl VAT)
£4.05
(£4.86 incl VAT)
OR

This board provides a rechargeable power source that can be used to power a project. It works by charging up a 1F super capacitor when it is connected to a USB port. Two LEDs are used to show when the capacitor is charged (this takes about 1 minute).

Once charged the USB lead can be removed and the board used as a power source. The power connection is by two solder connections. When switched on the board provides power until the capacitor is empty. The length of time this takes will depend upon your application circuit (from a few seconds to ten minutes or more).

Features:

  • Super Capacitor Charge Controller Kit.
  • Use this kit as a rechargeable power source for your Electronic projects.
  • Two LEDs are used to show when the capacitor is charged.
  • Once charged the USB lead can be removed and the board used as a power source.
  • When switched on the board provides power until the capacitor is empty.

Contents:

Dimensions:

  • PCB Length: 53.5mm.
  • PCB Width: 43mm.

Requires:

Resources:

Note:

  • This kit requires soldering.
  • This board was originally developed for use on our STEM racer kit. The build instruction reflect this, but the board can be used to drive motors in other applications or to power different types of loads (not just motors).

Buy British:

 This kit is designed and manufactured in the UK by Kitronik.

Questions:

Posted by Robert, Friday, 14 October 2016 on product Super Capacitor Charge Controller Kit

Question:

How long would the capacitor last when powering a speaker, for example the stereo amplifier circuit you stock? Also, if i swapped out the 1F capacitor for say a 10F capacitor, how long would it roughly last then when powering the speaker?

Answers:

  • Posted by Rob Haywood on Friday, 14 October 2016

    Hi Robert,

    The kit as is would only power the amplifier for a second and the 10F for around 5 seconds.

Posted by Dave, Tuesday, 9 February 2016 on product Super Capacitor Charge Controller Kit

Question:

Could this board be used with a 10F or greater capacitor?

Answers:

  • Posted by Michael Lockhart on Tuesday, 9 February 2016

    There wouldn’t be any problem with swapping the capacitor to a larger one, however you would need to take into account the charging time would also increase. So the 1F capacitor takes around 1 minute to charge, so a 10F capacitor would take around 10 minutes to charge.

Posted by Luke Sawyer, Wednesday, 16 December 2015 on product Super Capacitor Charge Controller Kit

Question:

Would this power a high torque motor used in conjunction with a gearbox, 2508?

Answers:

  • Posted by Michael Lockhart on Wednesday, 16 December 2015

    Unfortunately the kit wouldn’t be able to power the high torque motor, if you were wanting to use a motor with this kit then we use a low solar motor with the STEM racer kit, https://www.kitronik.co.uk/4501-stem-racer.html

Posted by Frank , Friday, 13 February 2015 on product Super Capacitor Charge Controller Kit

Question:

I've been trying to understand your circuit schematic, because I think it's quite clever, however there is one thing I don't quite get. The resistor you're using to limit the current drawn from the usb port seems to be a regular 1/4W rated resistor - how can this be? If i would want to limit the current to 500mA at 5V R=U/I gives me (5V/0.5A) 10Ohms which seems correct. However when calculting power: P=I*U=0.5A*5V=2.5W, so I would think you would at least need a resistor rated for 2.5W (usually 3W) which is much bigger. Could you please explain why you can get away with using a regular 1/4W resistor?

Answers:

  • Posted by Michael Lockhart on Friday, 13 February 2015

    The percentage of the voltage drop across the resistor would increase but the current would decrease proportionally  so the power consumed by the circuit as a whole would drop and the power consumed by the resistor would remain the same, though it would be a larger percentage of the total power consumption of the circuit. In fact no value of resistor would generate more heat in that circuit.  A 1 Ohm resistor would let 10 times more current through but the voltage drop would be 10 times smaller so the power dissipated would be the same. A 100 Ohm resistor would have 10 times more voltage drop across it but let 10 times less current through. Same power. The capacitor however would charge more slowly with less current allowed through so it would receive less power and the overall power of the circuit would decrease.

    The key point here is that the voltage drop across the resistor is very small and the voltage drop across the capacitor is very large.   P= IV

     

    For resistor P = 500mA x a very small voltage.

    For capacitor P = 500mA x almost 5V

     If you add both those powers together you get 2.5W.

Posted by Tom, Friday, 9 January 2015 on product Super Capacitor Charge Controller Kit

Question:

i just bought the Super Capacitor Charge Controller Kit and i just want to try it with super capacitor bank ,to increase the voltage any feedback thanks

Answers:

  • Posted by Aaron Sturman on Friday, 9 January 2015

    The Super Capcitor Charge Controller Kit measures the voltage across the super capacitor and cuts off charging once it reaches the peak voltage of one super capacitor. If you want to charge a bank of super capacitors you'd need a different circuit. Charging whole banks of super capacitors can be more difficult than just applying a voltage across all of them, I'd recommend researching the topic before attempting it or you may explode some capacitors.

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