I am wondering can I charge and discharge a supercapacitor at the same time like a battery.
I have 1.3V going into a 10F 2.7V capacitor in series with a 0.5 ohm resistor. I calculated it will take about 30 seconds to charge to "full". And I will have a 2.6A peak current.
The minimum voltage I need is 0.9 when I discharge the capacitor. I have a 500mA current load (1700mW) that I need for startup for 1 second.
I calculated that it takes 8 seconds to discharge to 0.9V (which is more than enough time). I then need a constant 0.085mAs after the 1 second power surge.
- Can I charge and discharge at the same time?
- Will I be able to charge the capacitor fast enough to keep the voltage above 0.7V after the power surge?
- Will I be able to keep my load running after the power surge when my load only requires 0.085mAs?
- I see that every 1 second my voltage from the capacitor drops 0.05V, so when I get to 1 second I have 2500mW of power left. If my load needs 1700mW, do I subtract that and I'm left with 800mW of power to deliver to my system while I charge my cap?
I am trying to figure out if a capcitor can supply a consistent wattage even when not completely full.