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Offline Cornelius
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« Reply #40 on: January 11, 2010, 04:51:09 pm »
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Yes , you have to use 12v batteries .  Lower current can be used but the detector will not work as good .  Cornelius

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« Reply #41 on: January 11, 2010, 04:53:21 pm »
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Is this one set up for two batteries or the original set up?

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« Reply #42 on: January 11, 2010, 05:02:36 pm »
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Because the transformer cannot be found anymore , this transformer has been replace by the second battery . This does not deminish the operation the slightest bit . The transformer created the second source of current  . Now you are using a second battery instead .  You may try using  two 9V batteries but they do not last long . For testing they are OK though .  Cornelius

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« Reply #43 on: January 11, 2010, 05:55:42 pm »
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sorry I sound a little confused, but your saying that I can't use the Two 7.2v battery packs in series for a total of 14.4 v.
 


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« Reply #44 on: January 11, 2010, 06:04:09 pm »
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Al . Do you see the two leads coming out of the detector  ?  Both of them need a battery . So.... you need two batteries  . To try the detector out use two  9V batteries . Later on in the field you can use  TWO 12 V batteries  . If the batteries are too heavy use a belt around your middle to cary them . Good luck . Cornelius

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« Reply #45 on: January 11, 2010, 06:20:58 pm »
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sorry Cornelius, but I'm still a little confused. What is the minumum voltage for the metal detector to run, is it 12 v ?


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« Reply #46 on: January 11, 2010, 06:31:25 pm »
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I'm thinking the battery being used in Lu of the transformer need not be a big one.

The voltage pump that the transformer made up only supplied like 100ma.

It was only used to supply the Op amps and things.

 Wise
The original supply was 10.5 Volt.

The one rail supplied 12v. derived via a voltage pump.



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« Reply #47 on: January 11, 2010, 06:32:04 pm »
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Yes Ali , the minimum voltage for operation in the field is  ( 2 times ) 12 V  . For temperary use you may use  two regular  9v batteries .  So , buy yourself two  9 V batteries  ( the regular little square ones  ) , click them into the two leads and start operating .  Turn sensitivity down till you barely hear it . Now your detector is set for operations . Only ...... the coils is using a lot of power  so the two little 9v batteries do not last long . If you hook up other power sources  be sure to hook them up right .    (  +   -+   -  ) . I hope you got it now !   Cornelius

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« Reply #48 on: January 11, 2010, 06:47:48 pm »
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sorry for sounding retarded, but when you said " 2 Times 12v " do you mean 24 volts in series or two 12v batteries in parallel , still confused. Do you mean it needs 12 volts to operate. ?

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« Reply #49 on: January 11, 2010, 06:57:51 pm »
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No Ali . We are not talking parallel or series . We are talking about two seperate batteries . That is why there are two leads .  So do as I told you . Just connect two 9V batteries to the two leads coming out of the detector and start working . ( later on change the two batteries  for two 12 V batteries  ) . I cannot be any more clear than this .     Cornelius

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