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Offline Homefire
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« Reply #10 on: January 01, 2010, 06:45:14 pm »
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What E-176?


There is a E-1761

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Offline alimanTopic starter
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« Reply #11 on: January 01, 2010, 07:23:01 pm »
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I think the 1 at the end of E-176 1 is refering to the quantity of that transistor, correct me if I'm wrong.
 
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« Reply #12 on: January 01, 2010, 08:01:25 pm »
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One the Schematic its listed as E176....

On the Parts list its listed as E1761

I'm looking for the complement of the 2n3918 that would work.

Jim

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Offline carlosdaniel
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« Reply #13 on: January 02, 2010, 08:00:23 am »
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E176 is a fet channel P.You can replace with these fet channel P : 2N5460,62,63,64,65, 2N3820

Carlosdaniel
this FET  P works as a variable resistor in the integrated 555 and acts as a variable frequency oscillator according to the voltage

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« Reply #14 on: January 02, 2010, 08:48:57 am »
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Thankz Carlos!    Looks like I went Dyslexic on my last post.

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« Reply #15 on: January 02, 2010, 12:30:24 pm »
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Thanks for the part subs, Carlos, you to Homefire.
 


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« Reply #16 on: January 03, 2010, 05:08:40 pm »
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Al . Tomorrow I will post a complete Sandbanks PI detector to you . No use building the thing since I had one laying around . You should receive it in about one week  ( it is up to the postal service ! ) . Read the letters I enclosed and be careful with your power hook-up .It is better to use some heavier batteries  ( instead of the regular 9v batteries ) . The only thing you have to do is make the coil . That coil is  one with a diameter of 200 mm  , the cu enamelled wire to use is  0.4 mm  (26 s.w.g. )  , the amount of windings are 20 .   you can start making this coil so you are ready when you receive my package .    Cornelius

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« Reply #17 on: January 03, 2010, 05:55:31 pm »
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Build the coil as Cornelius states.

Once you get it up and runing I will show you how to make it Hot on gold and speed things up.

This is all in the write Up but between lines.







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« Reply #18 on: January 03, 2010, 06:14:33 pm »
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Thanks Homefire for helping Al out  . I am sometimes too bussy . Explain to him that he can make a coil of lesser diameter but that he has to increase the amount of windings  ( to get the right resistance as with the regular coin ) . Of course he can reach deeper targets by using this smaller diameter coil. Thanks again   Cornelius

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« Reply #19 on: January 03, 2010, 06:47:31 pm »
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The original write up was lacking on the coil.

I think I used 20 swg 2oo MM and 2o windings. It worked quite well.  That is what was supplied in the kit I used and the one I just sold.

Let him get it working first.

Es No Problem.    Es Nada!




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« Last Edit: January 03, 2010, 06:49:52 pm by homefire »
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