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ESR meter upgrades

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    Re: ESR meter upgrades

    post pics of both sides of the pcb that are good enough to see all the tracks clearly.
    i'll work it out for you.

    Comment


      Re: ESR meter upgrades

      Originally posted by stj View Post
      post pics of both sides of the pcb that are good enough to see all the tracks clearly.
      i'll work it out for you.
      stj if you mean mine i will post some asap as light here at the minute is too bad too take any good ones, so bear with me thanks.

      Comment


        Re: ESR meter upgrades

        i almost finished the pcb stuffing list,

        verify something for me.
        x2 110 ohm
        x1 5.6k

        are you sure about those - specially the 110ohm - is it actually 1k?

        Comment


          Re: ESR meter upgrades

          x1 5.6k measures 0.56 on 20k scale
          x2 110 ohm measure 1k my mistake sorry
          x1 2.2k is 2.2k (im not sure if i wrote this as 2.2ohm)

          Comment


            Re: ESR meter upgrades

            wouldnt .56 be 560ohms?

            Comment


              Re: ESR meter upgrades

              Resistor colour GREEN BLUE BLACK BLACK BROWN cheers for your help stj just checked using hobby -hour calculator 560 ohms
              Last edited by vinceroger69; 06-18-2016, 11:15 AM.

              Comment


                Re: ESR meter upgrades

                thought so.
                in that case - go build it!
                ----------------------------------------
                r1 - 680r sensing circuit
                r2 - 470k sensing circuit
                r3 - 680r sensing circuit
                r4 - 470k sensing circuit
                r5 - 680r sensing circuit
                r6 - 470k sensing circuit
                r7 - 10k reset pullup
                r8 - 33k power control
                r9 - 3k3 power control
                r10 - 27k
                r11 - 100k (says r1 but is next to r10)
                r12 - 10k voltage divider for battery sense
                r13 - 3k3 voltage divider for battery sense
                r14 - 560r display related - led current limit
                r15 - 27k
                r16 - 0r jumper for AVCC
                r17 - 2k2 from tl431 to vcc
                r18 - 1k rotary encoder current limit
                r19 - 1k rotary encoder current limit
                r20 - 10k rotary encoder pullup
                r21 - 10k rotary encoder pullup
                r22 - 470r frequency input dropper
                r23 - 10k frequency input voltage divider
                r24 - 10k frequency input voltage divider

                rv1 - 10k preset frequency input voltage divider

                u3 = tl431

                q1 - 4673 (bc557c)
                q2 - c945 (bc547)
                q3 - c945 (bc547)

                c1 - 22pf for crystal
                c2 - 22pf for crystal
                c3 - 100nf
                c4 - 10nf
                c5 - 10uf 16v
                c6 - 10uf 16v
                c7 - 100nf
                c8 - 100nf
                c9 - 100n frequency input DC blocker
                ----------------------------------------

                Comment


                  Re: ESR meter upgrades

                  Originally posted by stj View Post
                  thought so.
                  in that case - go build it!
                  ----------------------------------------
                  r1 - 680r sensing circuit
                  r2 - 470k sensing circuit
                  r3 - 680r sensing circuit
                  r4 - 470k sensing circuit
                  r5 - 680r sensing circuit
                  r6 - 470k sensing circuit
                  r7 - 10k reset pullup
                  r8 - 33k power control
                  r9 - 3k3 power control
                  r10 - 27k
                  r11 - 100k (says r1 but is next to r10)
                  r12 - 10k voltage divider for battery sense
                  r13 - 3k3 voltage divider for battery sense
                  r14 - 560r display related - led current limit
                  r15 - 27k
                  r16 - 0r jumper for AVCC
                  r17 - 2k2 from tl431 to vcc
                  r18 - 1k rotary encoder current limit
                  r19 - 1k rotary encoder current limit
                  r20 - 10k rotary encoder pullup
                  r21 - 10k rotary encoder pullup
                  r22 - 470r frequency input dropper
                  r23 - 10k frequency input voltage divider
                  r24 - 10k frequency input voltage divider

                  rv1 - 10k preset frequency input voltage divider

                  u3 = tl431

                  q1 - 4673 (bc557c)
                  q2 - c945 (bc547)
                  q3 - c945 (bc547)

                  c1 - 22pf for crystal
                  c2 - 22pf for crystal
                  c3 - 100nf
                  c4 - 10nf
                  c5 - 10uf 16v
                  c6 - 10uf 16v
                  c7 - 100nf
                  c8 - 100nf
                  c9 - 100n frequency input DC blocker
                  ----------------------------------------
                  Big thanks for your help stj i wont be able too get back too this project untill early next week as going down the coast to visit dad (fathers day) suprise etc if weathers nice may spend a few extra days but will update this thread when built.

                  Comment


                    Re: ESR meter upgrades

                    Originally posted by vinceroger69 View Post
                    Big thanks for your help stj i wont be able too get back too this project untill early next week as going down the coast to visit dad (fathers day) suprise etc if weathers nice may spend a few extra days but will update this thread when built.
                    sorry i forgot too post this yesterday
                    c5 and c6 are 100uf 25 volts in the kit
                    then i have x4 104j
                    x1 103j

                    cheers again stj for your help

                    Comment


                      Re: ESR meter upgrades

                      16v was a minimum figure,

                      104 = 100nf
                      103 = 10nf

                      Comment


                        Re: ESR meter upgrades

                        Originally posted by stj View Post
                        16v was a minimum figure,

                        104 = 100nf
                        103 = 10nf
                        cheers stj it wasnt really the voltage i was worried as you said 10 uf these are 100uf will that be ok?

                        Comment


                          Re: ESR meter upgrades

                          fine, they are only power-smoothing

                          Comment


                            Re: ESR meter upgrades

                            cheers stj i will have ago tomorrow at building this kit and post the results.

                            Comment


                              Last edited by stj; 06-19-2016, 05:27 PM.

                              Comment


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