• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

LED- Varying Luminescence from Single Power Source

Status
Not open for further replies.

Robo222

New Member
How is it possible to create a string of LEDs of varying brightness from one power source? I need to create 4 or 5 different intensities if possible??
 

Brian218

New Member
The simplest way would be to use resistors of different values.

Using a 555 timer circuit to turn the LEDs on/off at different rates would be another way.
 

PhillDubya

New Member
And the voltage divider rule will help in deciding which resistors to use:

Vout = R2 / (R1 + R2) * Vin
 
Last edited:

audioguru

Well-Known Member
Most Helpful Member
And the voltage divider rule will help in deciding which resistors to use:

Vout = R2 / (R1 + R2) * Vin
You don't use a voltage divider to drive LEDs. Instead you simply limit the current with a series resistor or with a series regulated current source.
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top