Model Boat Mayhem - Forum

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: Led wiring  (Read 1101 times)

Captain fizz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 280
  • Model Boat Mayhem is Great!
  • Location: Oakham Rutland
Led wiring
« on: April 22, 2016, 07:53:42 AM »

when wiring led circuits, is it necessary to use a resister for each led or can they be wired in pairs with only one resister?


Simon
Logged

g6swj

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 313
  • Short Wave Jammer! -.-
  • Location: Northamptonshire, UK
Re: Led wiring
« Reply #1 on: April 22, 2016, 08:33:29 AM »

Logged

Captain fizz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 280
  • Model Boat Mayhem is Great!
  • Location: Oakham Rutland
Re: Led wiring
« Reply #2 on: April 22, 2016, 08:43:16 AM »

Thanks Jonathon, individual resistors it is.


Simon
Logged

Stan

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,302
  • Location: Leeds
Re: Led wiring
« Reply #3 on: April 22, 2016, 09:30:49 AM »

P/M sent also.

Stan
Logged

Brian60

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 3,315
  • Location: Hull,UK-but currently residing in Los Martinez, Spain.
Re: Led wiring
« Reply #4 on: April 22, 2016, 01:01:29 PM »

However that only addresses led's in parallel. It is perfectly acceptable to link them in series with only one resistor

Umi_Ryuzuki

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,118
  • Location: PDX, OR USA
    • Models and Miniatures
Re: Led wiring
« Reply #5 on: April 22, 2016, 06:33:25 PM »

You can use one resistor for a matched pair of LED, but at some point you will have to
increase the wattage of the resistor. If there is too much amp draw, say for a 1/8 watt resistor it will burn out.
Resistors are available in several watt ratings.  So it would depend on the "maths".

 ok2

Most of the time I have a resistor at each LED.

I know others that will run them in series and add up the voltages to match the power.
But like Christmas lights if one goes bad you lose the string. A voltage spike can do that.
Pages: [1]   Go Up