What ionistor is able to support 5 volts 1A for 2-3 seconds?

Question

Electronics

Good afternoon! The essence of the issue is that it is necessary to maintain the voltage and current in the network until the relay trips. I'm thinking of using a supercapacitive capacitor connected in parallel with the load. But I don't know which one to use for my purpose. Reasons for choosing an ionistor over a lithium battery: durability and fast charging. Tell the manufacturer and where to buy such an ionistor (5v, 1 A). Thank you!

Answer 1

If you stupidly count the capacitance, it turns out C \u003d 1A * 3s / 5V \u003d 0.6F. But!
1) The ionistor is not a battery; when discharging, the voltage across it drops exponentially. Full capacity corresponds to discharging from 5V to zero. If you need to maintain a voltage, say, not lower than 4.5V, then you will have to take an ionistor ten times larger in capacity.
Or (which is better) put a step-up converter after it. The ionistor will be discharged from 5 to 2 volts, and the output of the converter will be stable 5V. The required capacitance of the ionistor (taking into account the efficiency of the converter) is 1.5F
2) A conventional 5.5V 1.5F ionistor has an internal resistance of tens of ohms, so it will not be possible to draw a current of 1A from it. It is necessary to take ionistors with low internal resistance. For example, Panasonic EECHL0E405 or EECHL0E755 should fit
Datasheet: https://industrial.panasonic.com/cdbs/www-data/pdf...
They are 2.7V, so you need to connect the two in series and double the capacitance.

Answer 2

Thank you all guys. I connected an ionistor in parallel with the load, - I achieved the result. With your help.