i just wanna start by saying i appreciate any help at all and am grateful for this forum! Also, the only electrical knowledge i have are that of self experimentation, no education except reading online.
So i have always been curious to how xmas lights were able to go so far, while providing the right amount of voltage and current to each light bulb.
I am trying to build something similar, using lithium ion 3.7-4.2v batteries. I am building a dettachable solar system, so each globe has about 5-12 standard LEDs (around 3v each) inside them, a lithium ion battery, and a TP4056 charger.
Problem is, sending 5V through the wires, only the first globe would receive the full 5v,,, the next few would not receive enough voltage to the tp4056 charger.
I thought about sending 12v across and using a step down module at each globe, but that just seems so bulky. Which is why i ask the question, how does the xmas lights do it... Or other appliances, you don't see a bulky piece before each light, so it's not a step down module.
I thought about using resistors, but that's different for each globe as the voltage goes lower and lower throughout the main wire leads.
How do other appliances seem to handle the voltage regulation precisely without using a bulky voltage regulator? Could someone point me in the right direction?
(more information about my appliance) i'm making each globe dettachable so they can be used and charged individually and portable. When brought all together and re-attaching back to the main wire leads, they will all be used long term stationary with continuous charge.