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However, according to post 688, your circuit does not have a bipolar TX so you cannot use this. You will need to use something like this:
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However, according to post 688, your circuit does not have a bipolar TX so you cannot use this. You will need to use something like this:
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I adjusted this timing, all sample width is 20us.Originally posted by Carl-NC View Post
However, according to post 688, your circuit does not have a bipolar TX so you cannot use this. You will need to use something like this:
Ch1 = Tp5
Ch2 = Tp6
video1 : testing foil
video 2 : testing Iron hammer
I am using a small coil, a rectangle coil 10 * 5 cm.
If i put hammer very closely to coil, i hear a two fast beep, this happen only for iron, not foil.
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Is node "A" now behaving properly?Comment
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GB is working, i tested it with Concrete brick, clay brick.Originally posted by Carl-NC View Post
About Audio, i put iron Pliers and Hammer very closely to coil, i have two fast beep ( The horn sounds like two screams).
My coil is very small, only for my testing, 10*4 cm ( a rectangle).
Do you think this bad Audio disc can be for the small coil ( better use big coil)?Comment
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Today, i measured my +5 and -5V.Originally posted by Carl-NC View Post
My +5 is +4.1V!
It is because of 7662, it can not generate Sufficient current for my schematic.
Do you think this can be my problem?Comment
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Audio problem is unlikely due to the small coil. Also unlikely due to the 7662, although you should fix this.
Show a video of TP5 & TP6 with the clay brick.Comment
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Sorry for low quality video, i was not in my work room.Originally posted by Carl-NC View Post
See the video with brick, i can remove the brick with increasing GB pot.
CH1: TP5
CH2: TP6
Again, i tested with foil and iron hammer
both was the same,
Foil :
Hammer:
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Show me what the foil looks likeComment
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I still don't see the problem. The foil should have a very strong signal at TP5 and almost no signal at TP6. The hammer should be very strong on both TP5 and TP6. What I'm seeing looks like almost the same signal, always.Comment
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What is strange is that Mr. Ivconic had a problem exactly like mine with his Bipolar.Originally posted by Carl-NC View Post
It seems there is a common thing between us.
What is clear is that my Demod is working, But Disc audio has a problem.
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No, it's not clear your demods are working correctly. Look more closely at your demod timing, I suspect there is something wrong.Comment
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I again measured my timing on scope, this is my timing diagram.Originally posted by Carl-NC View Post
I am using micro and my level +5V is as follow:
As i told, my +5 is 4.1V. Can this lower voltage make this problem?
Can you tell me which of TGT,GB,TGT-EFE and GB-EFE play key role on correct timing for Demod?
I want to play with it.
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HelloOriginally posted by Carl-NC View Post
Dear Carl
I have a request, please see the posts #585 and #586.
If you remember, it is output of my DISC Demod (channel) and Blanking audio via 2n3904.
My Blanking is working but its speed is very fast. I am interested to do this like GPX blanking.
If you see, GPX blanking is slow and soft.
For example, After blanking, audio will back slowly and soft but my model is very fast and sharp.
Do you have any suggestion for editing my blanking part (2n3904)?
ThanksComment
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Show me your schematic.Comment
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