Please Explain this Circuit!

Discussion in 'General Electronics Chat' started by ELECTRONERD, May 31, 2009.

  1. ELECTRONERD

    Thread Starter Senior Member

    May 26, 2009
    1,146
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    Can someone please explain this circuit? I know that the transistor creates an AC signal and adds more amplification to the output but what does the transformer do?

    Thanks!
     
  2. studiot

    AAC Fanatic!

    Nov 9, 2007
    5,005
    513
    Man that's a cheap circuit. No components.

    :D:D
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Our OP may have tried to attach a file that's too large, like I've tried to do about a kajillion times. :rolleyes: ;)

    Electronerd, try doing a screen print of the image, and pasting it into MS Paint. Then crop and save it as a .png file; then upload that image.
     
  4. ELECTRONERD

    Thread Starter Senior Member

    May 26, 2009
    1,146
    16
    Ha ha, sorry guys! Yeah, I have this stupid design software that wont let me paste it on here! ARRRGH! So could you guys recommend a good software that's really easy?

    Thanks~
     
  5. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    I simply press the (shift) Print Scrn key then paste the screen's image into Microsoft Paint program, crop it and save it as a PNG file. Then I post it here.
     
  6. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    OK, we didn't explain the rest of the process.

    From the beginning:
    1) View your schematic.
    2) Press Ctrl+PrintScreen to capture the image in the paste buffer.
    3) Start MS Paint.
    4) Press Ctrl+V to paste the image into MS Paint.
    5) Crop to suit.
    6) Save image as a .PNG file.

    7) Open your browser to the forum and/or thread where you want to post your images.

    8) Below the "Quick Reply" text box, there's a button labeled "Go Advanced". Click it.
    9) In the new screen that comes up, under "Additional Options", click "Manage Attachments". A window will pop up. If it doesn't, then turn off your pop-up blocker.
    10) Click the first "Choose file" button on the pop-up window. Navigate to where you've saved your image, and click on it to select it; then click the "Open" button.
    11) Repeat step 10, if necessary, up to two more times.
    12) Click the "Upload" button.
    13) Close the window.
    14) Click "Submit Reply".

    Once you have some practice with attaching files, we'll show you how to display them right in the thread. However, you need to keep the image narrow enough to fit on a typical viewer's screen, or we'll be scrolling all over the place trying to read the thread.
     
  7. ELECTRONERD

    Thread Starter Senior Member

    May 26, 2009
    1,146
    16
    Okay guys, here is the schematic. What does the transformer do?
     
  8. ELECTRONERD

    Thread Starter Senior Member

    May 26, 2009
    1,146
    16
    Shoot! Didn't go through! I'm using the Eagle schematic designer...
     
  9. Wendy

    Moderator

    Mar 24, 2008
    20,764
    2,534
    Use screenshots instead. Know how to do this?
     
  10. ELECTRONERD

    Thread Starter Senior Member

    May 26, 2009
    1,146
    16
    Nope, teach me how.

    Thanks!
     
  11. Wendy

    Moderator

    Mar 24, 2008
    20,764
    2,534
    There is a key on your keyboard labeled "Print Screen". When you press it it copies the entire screen, which you can paste on the graphics program of your choice (I use M/S Paint). Use the .png (prefered) or .gif format to save it, and you now have a file, which you can crop and resize at your whim.

    It is a variation of the cut/paste function.

    It's what Wookie was trying to describe in post #6.
     
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