So it’s lockdown here and I’m making do with what I have in trying to experiment.
My goal is to understand how long a 5.3v 1000mah power bank would light up two leds. Leds have a forward voltage of 2.7v. I only have 100 ohm resistors.The circuit is parallel. Two leds each with a 100ohm resistor attached to positive and negative on the power bank. When I first plug them in the brightness is good and the light on the powerbank lights up. After a few seconds the light in the powerbank turns off and the leds go dim. Happens same each time I replug in. I’m wondering if I need to consider the other cables inside the USB cord - there are 5 in total, and I’m only using two, wondering if it’s a data connection that needs to be made for it to stay fully on? Or is it a current or ohms issue?
My goal is to understand how long a 5.3v 1000mah power bank would light up two leds. Leds have a forward voltage of 2.7v. I only have 100 ohm resistors.The circuit is parallel. Two leds each with a 100ohm resistor attached to positive and negative on the power bank. When I first plug them in the brightness is good and the light on the powerbank lights up. After a few seconds the light in the powerbank turns off and the leds go dim. Happens same each time I replug in. I’m wondering if I need to consider the other cables inside the USB cord - there are 5 in total, and I’m only using two, wondering if it’s a data connection that needs to be made for it to stay fully on? Or is it a current or ohms issue?