amplifying microprocessor

Discussion in 'Embedded Systems and Microcontrollers' started by fireintheit, Aug 23, 2014.

  1. fireintheit

    Thread Starter New Member

    Jun 14, 2014
    16
    0
    I was wondering if any one new of any good ways to amplify a signal from a microprocessor?
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,392
    497
    Use amplifier?
     
  3. Papabravo

    Expert

    Feb 24, 2006
    10,144
    1,791
    I can think of half a dozen or so ways. Can you be more specific?
     
  4. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    I probably know some bad ways too.

    When I say, use 2x red LEDs for PIC32 3.3v, many people say that's pretty bad. Backscatter of 80 MHz + harmonics are induced over the LED capacitance, so it actually conducts backwards, and then the EMI from the main switching regulator travels forwards over the standing wave, and you get a problem, you need to wind a collecting wire over the cables to the PIC32, and ground it.

    Yes there are many bad ways to accomplish amplification but I wont tell you.
     
  5. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,392
    497
    Not even for educational purposes?
     
  6. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    You could try to build a MAGAMP just with a collection wire wound over a transmission cable. A small change in the DC bias will cause a large change on the transmission cable, if you get the dimensions right.

    It's bad because they are out of fashion so it wont be all that obvious.
     
  7. fireintheit

    Thread Starter New Member

    Jun 14, 2014
    16
    0
    does any one know of any good amplifiers with a lot of supporting documentation that can be used with a microprocessor?
     
  8. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,800
    1,104
    A single-transistor level-shifter perhaps?
     
  9. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,392
    497
    Your criteria is too broad.

    Provide description of the input signal. Provide the description of desired output signal. Then we will be able to provide you with some meaningful assistance.
     
  10. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,388
    1,605
    What is the input to this amplifier?

    What is the output of this amplifier driving?

    Once you answer these two questions then we can sensibly talk about the piece in the middle.
     
Loading...