Power bank is one of the most important tools for now. This becomes a problem in itself when the smartphone features more sophisticated. Power bank is one solution offered to handle the problem. With the power bank we like to have more backup batteries and very helpful at all when traveling.
Maybe for you fans of the electronics world, see the power bank will certainly be curious. Actually like what is the inside of the power bank circuit? Or how the hell do I create a power bank circuit? Can we make our own power bank? Well, the answer I will explain in this post.
Power bank consists of several main parts, namely as follows:
- Battery
- Battery Charging Circuit
- Charging Gadget Circuit
Battery, is a temporary power storage medium. Battery on the power bank must be a battery that can be charging or recharging. Not disposable batteries such as ABC batteries or Alkaline batteries. Although the battery can actually be used, but can not be re-charging. Batteries used in power banks are usually Ni-MH batteries.
Battery charging circuit, is a series of electronics that serves to manage the charing process on batteries. Ni-MH batteries have special provisions for the charging process. Should not be in-charging. Arusa and voltage during charging process must be in accordance with battery specification. If the charging process is not correct, then the battery will be more quickly damaged. Or usually called baterei has leaked. Well, this battery charging circuit function to keep the current and voltage used to mencharging in accordance with battery specifications. So the batteries become more durable.
Charging Gadget Circuit, is part of the power bank circuit that serves to manage the voltage and current that will be used to mencharging gadgets. To charge the smartphone battery, it should not directly use the output of the battery power bank. Due to battery voltage and power flow of the bank does not match the battery that will be in charging smartphone. Therefore it is necessary gadgets charging circuit to adjust the voltage and output power of the bank.
To make the power bank circuit itself basically only needed 3 main component that I have mentioned above. May need additional switches and led lights as a flame indicator of the power bank. For batteries, you can use batteries used laptop.
For battery charging circuit and gadgets charging circuit you can buy the module in electronic component store. To make this circuit a bit more complicated because the range is quite complex. Therefore I recommend to buy it, because the price is also not expensive. Once the above components are complete, you can start to assemble your own power bank.
Picture scheme of power bank circuit below:
You only need to connect the cables according to the above sequence. And if so, please test to do charging to your smartphone. Make sure your circuit is correct before trying it!