Will using a resistor in series with a LED to control its voltage increase the total energy expenditure?
24335
How can I efficiently drive an LED?
28444
Are two (or N) resistors in series more precise than one big resistor?
122522
Interfacing switch and LED
107999
Can I safely use a 9w LED bulb in place of a 40w incandescent?
108217
Why put a resistor in series with signal line?
5227
When would I use a voltage regulator vs voltage divider?
40711
Getting higher power output by using more resistors
33827
Basic circuit voltage question - Using a driver to control a stepper motor
117910
How to drive multiple LEDs from a Li-ion battery (with varying voltage)?
16242
How do two-leaded color changing LEDs work?
130958
What resistor is needed to regulate the current through 2 3V LEDs in series with a 9V battery?
2774
Stepping up 3V to 5V
72226
LED conversion efficiency exceed 100%
152501
Why do we need resistors in led
30292
How do I calculate the resistor value for a simple LED circuit?
105102
Is it necessary to consume energy to perform computation?
23505
Usage of a transistor configured as diode