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hi homebuilder detectorists
i'm posting this simple metal detector project that i found at a french electronic site hoping will test it here with some help of you i m on my way to build it but i didn't found the pcb image in it
and im missing the taa 141 too so its stoping me to staring it
as i read it can detect a metal at the 80cm distance but really can't tell anything about the volume of the metal detected large or small lets try to see .
not enought informations in the doc too
so if thers a nice pcb drawer us a nice one
CI 7400 1
CI 7440 1
CI TAA 141 TAA 141 1
Résistance 220 ΩR1 – R2 – R3 – R4 4
Résistance 4,7 kΩR5 1
Résistance 22 kΩR7 1
Résistance 10 kΩR8 1
Résistance 8,2 kΩR9 1
Potentiomètre 4,7kΩP1 1
Potentiomètre 22kΩP2 1
Condensateur 22 nF C1 – C2 2
Condensateur 68 pF C3 – C4 2
Condensateur 3,9 nF C5 1
Condensateur 47 μF – 4V C6 1
Haut-parleur speaker 150ΩH.P. 1
i'm posting this simple metal detector project that i found at a french electronic site hoping will test it here with some help of you i m on my way to build it but i didn't found the pcb image in it
and im missing the taa 141 too so its stoping me to staring it
as i read it can detect a metal at the 80cm distance but really can't tell anything about the volume of the metal detected large or small lets try to see .
not enought informations in the doc too
so if thers a nice pcb drawer us a nice one
[IMG]file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtmlclip1\01 \clip_image002.gif[/IMG] Coil diamètre 17 cm, 35 turns q form « o » , 0.4 mm
Diode germanium D1
CI 7440 1
CI TAA 141 TAA 141 1
Résistance 220 ΩR1 – R2 – R3 – R4 4
Résistance 4,7 kΩR5 1
Résistance 22 kΩR7 1
Résistance 10 kΩR8 1
Résistance 8,2 kΩR9 1
Potentiomètre 4,7kΩP1 1
Potentiomètre 22kΩP2 1
Condensateur 22 nF C1 – C2 2
Condensateur 68 pF C3 – C4 2
Condensateur 3,9 nF C5 1
Condensateur 47 μF – 4V C6 1
Haut-parleur speaker 150ΩH.P. 1
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