Connect with us

Test Results of the Basic NPN LED flasher.

Discussion in 'Electronic Design' started by Jamie, Oct 16, 2011.

Scroll to continue with content
  1. Jamie

    Jamie Guest

    A While ago I posted a circuit, something like this.

    12V+ -|___|-+--+----------+
    | |
    | |
    | |
    | |
    | |
    | | NPN
    | <|
    | |-
    | /|
    --- |
    400UF --- |
    | .-.
    | | |
    === | | 120
    GND '-'
    V -> LED
    (created by AACircuit v1.28.6 beta 04/19/05

    And asked about its longevity of the NPN transistor used this way?

    Of course, it turned into a three ring circus, so for the last week or
    so, I have been operating one using a bench supply and it seems to work
    just fine.

    I didn't do a beta test on the transistor to see if it lost anything
    but I really don't care because this is going to be a permanent use of a
    transistors life.

    Also, with experimentation I was able to come up with various
    configurations that was stable across a wide range of voltages starting
    at 11 Volts and up. These make for cheap throw away things.

Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day