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Offline ChristianTopic starter
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« on: February 08, 2009, 04:37:22 pm »
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Sandbanks PI Metal Detector



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« Last Edit: September 04, 2009, 02:28:52 pm by Christian » 		Logged
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Offline Homefire
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« Reply #1 on: September 04, 2009, 01:41:42 pm »
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Here You Go!

The only issue with this circuit is the Toko transformer seems to be elusive.

The schematic states one number and the Kits I had and have issued another.

You can wind your own.

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Offline Cornelius
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« Reply #2 on: September 04, 2009, 01:57:55 pm »
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You don't need the TOKO transformer . Just substitute with a second  9V  battery .    Cornelius

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« Reply #3 on: September 04, 2009, 02:01:57 pm »
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I know but someone wanted to keep it as close as posible to the original.

I never  did find another Transformer. For You!

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« Reply #4 on: September 04, 2009, 02:21:34 pm »
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The transformer cannot be found anymore . So you may stick to the original schematic ( and have an original Detector that cannot be made )  or ..... you want a PI detector that works for you .  Cornelius

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« Reply #5 on: September 04, 2009, 07:41:46 pm »
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Thank-You Homefire and Cornelius . Eventually the Unsolved Mystery will be solved !! But the PI circuit can be built without the TOKO Transformer  .

HH........Regards......Eugene

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« Reply #6 on: September 04, 2009, 08:10:57 pm »
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I lost track of were we posted all the other info.

If I remember right any of the TOKO Yellow IF transformers would work.


It's just a Voltage Pump.  Nothing Critical. 

If you have the TOKO Transformer, I provided a link to rewind them.

Anything with a 1:3 Ratio should work.

Runing a second battery is always a option but the transformer is not lost in space.

I have a Hand Written letter from William Lahr.

He was the one that got me started on the thing.

Most Cool Man!

I bought a kit and copied it.   The coil was handy back then.

I still have the original kit. Great

If some was to offer enough, I may be perswaded to sell it.



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Offline JanotaKing
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« Reply #7 on: August 02, 2010, 02:47:16 pm »
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Nice im building one right now! Smiley

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« Reply #8 on: August 02, 2010, 03:58:53 pm »
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Let us know how it turns out!   Tongue

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Offline JanotaKing
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« Reply #9 on: August 02, 2010, 04:04:48 pm »
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Ok I will, I need some more work on it, and I need to find some components that I dont have yet. xD

See ya

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