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  • PartNo Replacement Repl. Mfr Type Additional
    LM308National Semiconductor ยท Operational Amplifiers OP77 Analog Devices
    OP02 Analog Devices
    OPA237SINGLE-SUPPLY OPERATIONAL AMPLIFIERS MicroAmplifier Series Burr-Brown
    Legend: Pin-to-Pin Replacement
    Compatible Equivalent
    Functional Equivalent
    Possible Analogue


    http://www.allxref.com/nsc/lm308.htm


    OP77
    Last edited by paku; 07-27-2013, 08:13 AM. Reason: update

    Comment


    • Originally posted by liekwang View Post
      What is the best replacement for LM308 ic please I do not get the lm308 ic in my country
      this OP07DP I can replace the lm308.
      the thing is, you can not find the lm308 in OP07DP will be able to find it?
      the NTE 938 best seems

      Comment


      • ?Spikes can I find TL081 does equal the LM308

        Comment


        • fmnotes

          ?I just can do same TL081 do you think

          Comment


          • Originally posted by liekwang View Post
            ?I just can do same TL081 do you think
            Try Believe that temporarily will work, but can in some problems. but yet it can not create a problem..

            Comment


            • ?I just need to find a replacement for lm308 I have currently TLa081 and ic TL082

              Comment


              • Originally posted by liekwang View Post
                ?I just need to find a replacement for lm308 I have currently TLa081 and ic TL082
                Try it yourself. Evil will not do in the system.

                Comment


                • Hi Liekwang
                  The TLO81 will replace LM308 and work fine.
                  On some but not all of the TGSL builds we found the LM308 to be a shade more stable when using the machine out in the field but apart from that they work just fine.
                  Regards

                  Comment


                  • ?satdaveuk now I have a problem 22omh resistor near burning me confused 7808 what could cause burning I use mpsa 13 with 0, 8omh 5watt speakers

                    Comment


                    • i need street help
                      i have make following TGSL coil Making and i just get detection 15cm in deep coin size is 23mm in my picture

                      this my coin size http://imageupload.co.uk/files/u8e12b6x610fk19pnrq3.jpg

                      what is my problem or i need use LCR meter to Test The Coil

                      im very tired about make the coil need true help about make the coil
                      i have make 15 set DD coil but Stil can not get 30cm distance scan why why why why

                      what tools i need what is
                      i have buy DD cover bulgarian housing and insert coil to the bulgarian cover still same

                      just detect 15cm full-length

                      Comment


                      • hi Qiaozhi & other friends
                        i have a question ;
                        i don't now what is best?
                        http://www.geotech1.com/forums/showt...mplete-Details
                        or
                        ivconic schematic in page 209
                        please help me

                        Comment


                        • Originally posted by alonejax View Post
                          hi Qiaozhi & other friends
                          i have a question ;
                          i don't now what is best?
                          http://www.geotech1.com/forums/showt...mplete-Details
                          or
                          ivconic schematic in page 209
                          please help me
                          Everything is in the link. That's why it's called "TGSL Complete Details".

                          Comment


                          • Okey
                            Thank you bro

                            Comment


                            • hello
                              please help me.
                              i made this tgsl and work well all metal but disk mode not work. -5v on schematic is -6.2v!
                              what can i do to improve that?

                              Comment


                              • qiazhi

                                ?Where can I find the Board pcb layout top and bottom-side file type JPG TGSL I built the first Board on page 1 and 4 not working always burnt resistor 22omh

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