Project: Experiment in small signal circuit design.

Reply to Thread

Discussion in 'The Projects Forum' started by hobbyist, Jul 12, 2009.

Reply to Thread
  1. Jul 12, 2009 #1
    hobbyist

    Thread Starter Distinguished Member

    Aug 10, 2008
    789
    73
    Here is a experimental circuit to sense current flowing through a wire by putting a electric cord near the top of a miniature power transformer that acts like a sensor and then turning on the appliance and that small signal gets amplified to the point where it can be rectified and then amplified in DC to turn on a LED, at the output.

    No connections to the AC cord just magnetic flux cutting through the transformer windings and amplifying the signal to a usable output voltage..

    This was fun to design...

    current sensor 5.jpg
     
    Last edited by a moderator: Dec 27, 2011
    #1 Reply
  2. Jul 13, 2009 #2
    millwood

    Guest

    would it have been simpler with an opamp?
     
    #2 Reply
  3. Jul 13, 2009 #3
    Wendy

    Moderator

    Mar 24, 2008
    20,993
    2,731
    Probably, but sometimes the fun is using a specific design approach, sorta like audiophiles building amps with tube circuits.
     
    #3 Reply
Loading...
Related Forum Posts:
  1. ADCapacitor

    small signal circuit

    Posted by ADCapacitor in forum: Homework Help
    Replies:
    21
    Views:
    1,380
  2. RedX

    Small Signal equivalent circuit

    Posted by RedX in forum: Homework Help
    Replies:
    1
    Views:
    1,229
  3. mau80

    Small signal equivalent circuit

    Posted by mau80 in forum: Homework Help
    Replies:
    1
    Views:
    2,067
  4. veerendra

    small signal circuit analysis

    Posted by veerendra in forum: Homework Help
    Replies:
    12
    Views:
    2,695
  5. miraynur

    small signal equivalent circuit

    Posted by miraynur in forum: Homework Help
    Replies:
    1
    Views:
    1,526
  6. ethan007

    Design signal in Matlab

    Posted by ethan007 in forum: Programmer's Corner
    Replies:
    2
    Views:
    6,211
You May Also Like:

  1. Cambridge's New Hyper-Efficient Transistors Are a Perfect Match for the IoT

  2. Build a Solar Battery Charger For Ni-MH Batteries

  3. Low-Power Accelerometer Moving IoT Forward


Load More