Hello! I've been doing experiments with supercapacitor. I'm trying to integrate it to help prolong battery runtime.
I tried some scenarios like connecting the Supercap directly in parallel with the battery with no added components/circuit. The thing is it didn't help the battery at all rather it degrades it even more. After reading some articles i've found out that the in-rush current may have been the cause of my problem.
Now, im planning to add some components that would somehow limit the current draw from the battery using only simple components like resistor/transistor/mosfet/etc.. and at the same time charge the supercap fast. Ive seen some chips for supercap chargers but my budget is limited so I opt to use simple components if its possible.
From my experiments, (correct me if im wrong) i have noticed that the higher the current supplied to the supercap the faster it charges. So im planning to use darlington pair so that i can input small amount of current(therefore preserving the battery) and provide an ampified current at the output(thus, charge the Supercap fast).
Is my idea somehow effective or im not making any sense at all? I do appreciate any suggestions you want to share. This is my first time handling supercap and i dont have that much experience with electronics either.
Im using two AA rechargeable batteries(1.2V, 2100mAH) and 1 SuperCap (2.5V, 33F). My Load will take about 200mA-500mA. Im also planning to replace the SUperCAp with smaller value (0.1F, 2.5V) because it's taking too much time to charge this 33F supercap.
Thank you in advance!
I tried some scenarios like connecting the Supercap directly in parallel with the battery with no added components/circuit. The thing is it didn't help the battery at all rather it degrades it even more. After reading some articles i've found out that the in-rush current may have been the cause of my problem.
Now, im planning to add some components that would somehow limit the current draw from the battery using only simple components like resistor/transistor/mosfet/etc.. and at the same time charge the supercap fast. Ive seen some chips for supercap chargers but my budget is limited so I opt to use simple components if its possible.
From my experiments, (correct me if im wrong) i have noticed that the higher the current supplied to the supercap the faster it charges. So im planning to use darlington pair so that i can input small amount of current(therefore preserving the battery) and provide an ampified current at the output(thus, charge the Supercap fast).
Is my idea somehow effective or im not making any sense at all? I do appreciate any suggestions you want to share. This is my first time handling supercap and i dont have that much experience with electronics either.
Im using two AA rechargeable batteries(1.2V, 2100mAH) and 1 SuperCap (2.5V, 33F). My Load will take about 200mA-500mA. Im also planning to replace the SUperCAp with smaller value (0.1F, 2.5V) because it's taking too much time to charge this 33F supercap.
Thank you in advance!