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Hello, I made a tx coil for the TGSL circuit and I did a continuity test on this one, I have discontinuous beeps!! should you have a continuous beep?
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Probably you are just making bad contact with the meter. -
when I made the coil. I had to cut copper wire and resolder other piece of copper wire because I didn't have the recommended value for TX . Do you think this is the cause of the non-continuous beep? I specify that the continuity test was done without the coil being soldered on the board, should we have a continuous beep on the continuity test when the coil is faultless.Comment
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Yes, you should have a continuous continuity beep. At some resistance level the meter won't beep anymore so make sure you are not right at the threshold with your coil resistance.Comment
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Carl,
I attach the graph of the two coils,
that I tested on the bredeboard with the oscillator
for now I would call them A and B (coils)
the shape of the signal is substantially the same for the two coils.
Does the shape of the signal seem reasonable to you?
the test was done with a small DSO 138 (gadjet)
the inductors have the wrong value! but I wanted to see the shape of the signal.
See Attachment .Comment
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I would expect a cleaner waveform.Comment
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Carl I did the breadboard test again
and by touching the cables of the breaboard, the signal seems to me
correct this time. the circuit is supplied with 8V.
So I'm going to redo the circuit for good on pcb,
hoping that this time if I will be able to succeed in making this detector, I have never succeeded so far!
I will try with the values of these coils to know.
Coil A 5.84mH
Coil B 6.95mH
correct this time.Comment
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