help copying a Circuit

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  • predator0357
    Senior Member
    • Jul 2014
    • 159
    • Israel

    #1

    help copying a Circuit

    Hi all.

    I need your help from all the experts around here, i have a that i need to copy and i need some help please to make Schema of it, so if u can help i will be extremely happy.

    The electrolytic capacitor are:
    C1+C2- 100uF 35V
    C3-2.2uF 63V

    there is there like tiny blue thing that i didnt really know i think its 0.1uF 100nF 50V 104 (104 what printed on it) Multilayer Monolithic Ceramic Capacitor and there is round thing that i think its Ceramic Disc Capacitor 50V 103 0.01uF (103 what printed on it).
    there is a blue Square thing that i dont know how its called.
    Attached Files
  • predator0357
    Senior Member
    • Jul 2014
    • 159
    • Israel

    #2
    Re: help copying a Circuit

    the chip is 555

    Comment

    • predator0357
      Senior Member
      • Jul 2014
      • 159
      • Israel

      #3
      Re: help copying a Circuit

      I want copying it on a DIY Prototype PCB

      Comment

      • predator0357
        Senior Member
        • Jul 2014
        • 159
        • Israel

        #4
        Re: help copying a Circuit

        Help some1 pls

        Comment

        • SteveNielsen
          Retired Tech
          • Jun 2012
          • 2327
          • USA

          #5
          Re: help copying a Circuit

          You must be patient. People will help if they can, just got to give them time. What is the purpose of the circuit?

          The blue object is a trimmer pot. Can't tell what value. The circuit appears to be a 555 timer circuit. The trimmer adjusts the timing.

          Comment

          • predator0357
            Senior Member
            • Jul 2014
            • 159
            • Israel

            #6
            Re: help copying a Circuit

            Its for big billboard on the roads. and its controls the timing of the board that have 3 Advertising's.
            like the one on the pics.

            and on the trim pot i think printed 2046B cuz the "4" looks like U

            P.S
            Sorry that i am impatient cuz its related to my new work (i am responsible of maintaining these billboards).

            and tnx u very much 4 the help
            Attached Files

            Comment

            • paulstef
              Badcaps Veteran
              • Dec 2013
              • 724
              • Canada

              #7
              Re: help copying a Circuit

              Like Steve said if you tell us what the purpose of the circuit is we can help you better.
              Look here for basic 555 configs: http://en.wikipedia.org/wiki/555_timer_IC

              If you take two pictures exactly from the top and bottom (not taking the photo at an angle like you did) one can easily overlay the two pictures and draw the schematic.

              The circuit is very simple...

              Comment

              • mariushm
                Badcaps Legend
                • May 2011
                • 3799

                #8
                Re: help copying a Circuit

                So what do you expect from us?

                Use a flashlight or some bright light, put the pcb over the light and you should see the traces through the board.
                Take a sheet of paper and draw the traces.

                The 555 chip is ancient and very well documented and easy to understand, if you'd bother to open the datasheet for it and read it, and if you'd search for tutorials/lesson about it , just type 555 in Google.
                Even the datasheets have example circuits which may even be similar to the one you have.

                Basically, the chip outputs a series of ON and OFF signals, some voltage and no voltage, the blue thing (a potentiometer) simply adjusts how much time the output stays on and how little it stays off.

                Comment

                • keeney123
                  Lauren
                  • Sep 2014
                  • 2536
                  • United States

                  #9
                  Re: help copying a Circuit

                  Originally posted by predator0357
                  Help some1 pls
                  I listed the top of the board schematic the best I could. Coloring on resistor was hard to tell. Best to take picture of boards with no flash and in natural light. If you had a way of printing this picture on some transparent paper then print out the bottom of the board on solid paper one could trace out the rest of the circuit. Anyway it is best I could do with the paint program.
                  Attached Files

                  Comment

                  • predator0357
                    Senior Member
                    • Jul 2014
                    • 159
                    • Israel

                    #10
                    Re: help copying a Circuit

                    i expect from someone to help me copying that, cuz i am a beginner with building Schema from a circuit.
                    and the circuit isn't near me so i cant just put some light under it, i wish i had one that why i am asking from any one here that can help me and experience .
                    And by the way about the tiny capacitors am i right?

                    and again thanks for the help and understanding.

                    Comment

                    • predator0357
                      Senior Member
                      • Jul 2014
                      • 159
                      • Israel

                      #11
                      Re: help copying a Circuit

                      Originally posted by keeney123
                      I listed the top of the board schematic the best I could. Coloring on resistor was hard to tell. Best to take picture of boards with no flash and in natural light. If you had a way of printing this picture on some transparent paper then print out the bottom of the board on solid paper one could trace out the rest of the circuit. Anyway it is best I could do with the paint program.
                      thanks for the help but i need diagram of this circuit to build new one on a prototype PCB.

                      Comment

                      • budm
                        Badcaps Legend
                        • Feb 2010
                        • 40746
                        • USA

                        #12
                        Re: help copying a Circuit

                        I need STRAIGHT SHOT pictures of the board, top and side and bottom side so I can make virtual PCB to trace out the circuit.

                        Isn't this the same circuit you were asking for help but did not follow through and abandon the thread?
                        https://www.badcaps.net/forum/showthread.php?t=39368
                        Last edited by budm; 05-29-2015, 12:15 PM.
                        Never stop learning
                        Basic LCD TV and Monitor troubleshooting guides.
                        http://www.badcaps.net/forum/showthr...956#post305956

                        Voltage Regulator (LDO) testing:
                        http://www.badcaps.net/forum/showthr...999#post300999

                        Inverter testing using old CFL:
                        http://www.badcaps.net/forum/showthr...er+testing+cfl

                        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                        http://s807.photobucket.com/user/budm/library/

                        TV Factory reset codes listing:
                        http://www.badcaps.net/forum/showthread.php?t=24809

                        Comment

                        • predator0357
                          Senior Member
                          • Jul 2014
                          • 159
                          • Israel

                          #13
                          Re: help copying a Circuit

                          yes its kind of the same circuit
                          but this one is more detailed.

                          Comment

                          • budm
                            Badcaps Legend
                            • Feb 2010
                            • 40746
                            • USA

                            #14
                            Re: help copying a Circuit

                            Originally posted by predator0357
                            yes its kind of the same circuit
                            but this one is more detailed.
                            Well, then give me the good clear straight shot pictures as I requested then.
                            Never stop learning
                            Basic LCD TV and Monitor troubleshooting guides.
                            http://www.badcaps.net/forum/showthr...956#post305956

                            Voltage Regulator (LDO) testing:
                            http://www.badcaps.net/forum/showthr...999#post300999

                            Inverter testing using old CFL:
                            http://www.badcaps.net/forum/showthr...er+testing+cfl

                            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                            http://s807.photobucket.com/user/budm/library/

                            TV Factory reset codes listing:
                            http://www.badcaps.net/forum/showthread.php?t=24809

                            Comment

                            • paulstef
                              Badcaps Veteran
                              • Dec 2013
                              • 724
                              • Canada

                              #15
                              Re: help copying a Circuit

                              Originally posted by budm
                              Well, then give me the good clear straight shot pictures as I requested then.
                              I don't know if they'll do it, there is too much glare on them... better he takes other pics maybe...
                              Attached Files

                              Comment

                              • keeney123
                                Lauren
                                • Sep 2014
                                • 2536
                                • United States

                                #16
                                Re: help copying a Circuit

                                Originally posted by paulstef
                                I don't know if they'll do it, there is too much glare on them... better he takes other pics maybe...
                                Last one is a transparency it is just a matter of following the lines and putting in the symbols.

                                Comment

                                • keeney123
                                  Lauren
                                  • Sep 2014
                                  • 2536
                                  • United States

                                  #17
                                  Re: help copying a Circuit

                                  predatoro357 I think if you focus straight down on the electrolytic caps making sure they are perpendicular to the board and turn camera so it goes in landscape direction instead of portrait. Try an do it with flash off without power on board so that LEDs are off. If using a flash make sure bright spot is in area where circuits are not.

                                  Comment

                                  • budm
                                    Badcaps Legend
                                    • Feb 2010
                                    • 40746
                                    • USA

                                    #18
                                    Re: help copying a Circuit

                                    BTW, what is the board dimension?
                                    Never stop learning
                                    Basic LCD TV and Monitor troubleshooting guides.
                                    http://www.badcaps.net/forum/showthr...956#post305956

                                    Voltage Regulator (LDO) testing:
                                    http://www.badcaps.net/forum/showthr...999#post300999

                                    Inverter testing using old CFL:
                                    http://www.badcaps.net/forum/showthr...er+testing+cfl

                                    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                                    http://s807.photobucket.com/user/budm/library/

                                    TV Factory reset codes listing:
                                    http://www.badcaps.net/forum/showthread.php?t=24809

                                    Comment

                                    • predator0357
                                      Senior Member
                                      • Jul 2014
                                      • 159
                                      • Israel

                                      #19
                                      Re: help copying a Circuit

                                      Originally posted by budm
                                      btw, what is the board dimension?
                                      6.4cm x 4.2cm

                                      Comment

                                      • predator0357
                                        Senior Member
                                        • Jul 2014
                                        • 159
                                        • Israel

                                        #20
                                        Re: help copying a Circuit

                                        Originally posted by paulstef
                                        I don't know if they'll do it, there is too much glare on them... better he takes other pics maybe...
                                        thanks a lot m8

                                        Comment

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