/diy/ - Do It Yourself

>>1405065

if you follow that line, it leads to ground.

>>1405089

side-emitting fiber-optic wire seems like a much better choice.
https://www.youtube.com/watch?v=eOEykSKhh6U
(Glow Laser Wire VS LED and Electroluminescent )

>>1405279

dunno where people get the idea that voltage dividers are suitable for powering gadgets; must be some new high school thing. no one uses that in the real world coz it's stupid.

anyway, theoretically speaking, the reason you use 2 resistors instead of just one is that it gives you a FIXED division ratio. if you use just one, then the voltage output will vary with the current consumed by the device. so imagine a radio, that as you turn the volume up, the power supply drops, and so the volume drops instead.