Announcement

Collapse
No announcement yet.

Delta Pulse

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Originally posted by nelson View Post
    Anyone has experiment with 1X1 meter coil for delta pulse?
    What are the results and what are the coil´s values.
    I need it to make one.
    Thanks
    Nelson

    Original DP has a coil of 1.1 x 1.1 m with 16 turns. If you will make it 1x1m then wind 17 turns. Use wire with 1mm diameter. If the DC resistance is lower than 2.5 Ohm then connect a resistance in series, so to measure at the connector a dc resistance of 3.5 ohm (3 ... to 4 ohm is ok).
    Regards

    Comment


    • Hi Geo and thanks for reply.
      Ok i got the picture. By the way, if i use a F meter, where i should connect it?
      Thanks
      Nelson

      Originally posted by Geo View Post
      Hi Nelson
      if you have Oscilloscope, connect the probe at the gate of IRF740 and measure the time between two pulses ( when they rise). Then frequency is F=1/time. Frequency counters are not accurary. I have 3 fr counters and only one (hand made) shows the real frequency. The other two reads duble frequency....
      Regards

      Comment


      • Ok Geo, what about if i ise 1.5 mm wire? or may be 0.85mm wuth a resistance in series to get around 3.5 or more?
        Regards
        Nelson

        Originally posted by Geo View Post
        Original DP has a coil of 1.1 x 1.1 m with 16 turns. If you will make it 1x1m then wind 17 turns. Use wire with 1mm diameter. If the DC resistance is lower than 2.5 Ohm then connect a resistance in series, so to measure at the connector a dc resistance of 3.5 ohm (3 ... to 4 ohm is ok).
        Regards

        Comment


        • Originally posted by nelson View Post
          Hi Geo and thanks for reply.
          Ok i got the picture. By the way, if i use a F meter, where i should connect it?
          Thanks
          Nelson
          Pin 5 or pin 9 of LM556

          Comment


          • Originally posted by nelson View Post
            Ok Geo, what about if i ise 1.5 mm wire? or may be 0.85mm wuth a resistance in series to get around 3.5 or more?
            Regards
            Nelson
            With 0.85 maybe to work. I know many people that made the coil with 1.5mm with very good results.
            Here at Greece, we use the PI detectors only with Big coils (1x1 or 2x2 m)

            Comment


            • Excellent Geo. I ll try 1.5 mm electrical wire and for the frequency i ll try first to connect my meter to the pins you said.
              Take care
              Nelson


              Originally posted by Geo View Post
              With 0.85 maybe to work. I know many people that made the coil with 1.5mm with very good results.
              Here at Greece, we use the PI detectors only with Big coils (1x1 or 2x2 m)

              Comment


              • povezao sam pogresno polove na akomulatoru i delta pulse je crko
                Zamenjeno : tl062 , irf840 , 1n4001 , 1n4148 , bc546 , lm556 i dalje ne radi
                sta bi moglo da bude i gde i sta treba da merim unimerom radi provere

                Comment


                • Originally posted by labtec1 View Post
                  povezao sam pogresno polove na akomulatoru i delta pulse je crko
                  Zamenjeno : tl062 , irf840 , 1n4001 , 1n4148 , bc546 , lm556 i dalje ne radi
                  sta bi moglo da bude i gde i sta treba da merim unimerom radi provere

                  " I accidentally reversed battery poles at DP. Something blowed. Already replaced : tl062 , irf840 , 1n4001 , 1n4148 , bc546 , lm556 and still not working. What else should i check and replace? "

                  Comment


                  • Originally posted by ivconic View Post
                    " I accidentally reversed battery poles at DP. Something blowed. Already replaced : tl062 , irf840 , 1n4001 , 1n4148 , bc546 , lm556 and still not working. What else should i check and replace? "

                    Hahahaha ..... where are you Ivica???
                    How are you and your family?????
                    Long time to read about you. What about the beautiful Servia????
                    Maybe after 3 weeks to go again to Beograd, so i will phone you again.
                    Se xereto Geo

                    Comment


                    • Giasou Geo!
                      Not only to phone me, but visit me! Looking forward!

                      This guy obviously need help refering blowed DP. Reversed batt. poles and busted it. I never had simillar case. Also i estranged latelly from this subject. First thing came to my mind was TL062 and virtual gnd. But he replaced it already. Also D8 and D9 need to be replaced....what else?

                      Comment


                      • merhaba aziz abi

                        aziz abi delta puls'ta şöyle bir sorunum var power açınca fet aşırı ısınıyor. lm556 (ne556, ka556) yerilerine icm7556 takınca normal çalışıyor. sence ne yapmam gerekiyor icm7556 hem pahalı hemde zor bulunuyor. birde ben pulsdetektor.de sitesindeki miner'in çıkış katını nasıl uygularım ne yapmam gerekir. ben birebir miner2 nin çıkış katını uygulaya çalıştım ama hcpl3120 tetikleyemedim nasıl bir modifiye yapabiliriz yardımlarınızı bekliyorum..
                        thank you all's forum..

                        Comment


                        • Merhaba arkadas,

                          Originally posted by aziz abi bunu oku View Post
                          aziz abi delta puls'ta şöyle bir sorunum var power açınca fet aşırı ısınıyor. lm556 (ne556, ka556) yerilerine icm7556 takınca normal çalışıyor. sence ne yapmam gerekiyor icm7556 hem pahalı hemde zor bulunuyor. birde ben pulsdetektor.de sitesindeki miner'in çıkış katını nasıl uygularım ne yapmam gerekir. ben birebir miner2 nin çıkış katını uygulaya çalıştım ama hcpl3120 tetikleyemedim nasıl bir modifiye yapabiliriz yardımlarınızı bekliyorum..
                          thank you all's forum..
                          Delta pulse'nan hic ilgilenmedim simdiye kadar. Ama altindaki gösterdigim deneyi yap. FET'in isinmasini biraz indirir belki.

                          Miner'nen hic ilgilenmedim. Su anda kendi yaptigim deneylernen cok ilgeleniyorum.
                          Bol selamlar,
                          Aziz
                          Attached Files

                          Comment


                          • Hi. Do you replace the D7 (1N4001)???
                            It is the first that destroying with reverse power. Also D8... D9 from big current. Normaly nothing else is destroying...
                            I dont read all the articles, so sorry if you have made same reply.

                            Ivica, i will not stay long time. I will return from Budapest and i will go to Sofia via Beograd. We will stay at Beograd only some Hours. I will try to phone you
                            Regards

                            Comment


                            • hi Aziz. what do the diode and the resistor give that you added?

                              tia

                              Comment


                              • Originally posted by kt315 View Post
                                hi Aziz. what do the diode and the resistor give that you added?

                                tia
                                Hello KT315. Sorry, I'm not Aziz. I once asked Aziz the same question about the diode so maybe you won't mind if I answer. The diode becomes reverse biased during flyback and therefore acts as a capacitor in series with FET capacitance. Series capacitance is reduced, by the formula CT=(C1XC2/(C1+C2)). This reduces flyback time and allows using a higher value damping resistor.
                                The resistor? I think that is a 10k pulldown resistor. The LM556 already has a fast trailing edge in this circuit - but if you use one of the CMOS versions having reduced output drive (ICM7556, GLC556, etc.) a pulldown would be beneficial.

                                edit: Any increase in speed to the flyback pulse should equate to more energy transmitted. Adding the diode should definately result in noticably higher coil current for a given transmit pulse. So, the transmit pulse could be shortened if you don't want more coil current. If you do shorten the transmit pulse you should see an increase in battery life because of increased efficiency.

                                Comment

                                Working...
                                X