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Superscan PI
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Hello, I use bc640 and bc639.Originally posted by Altra View PostOne thing that can mess this project up is the transistors. Eric's detector designs, in many cases used transistors with ECB pin configurations. Where as most common transistors use EBC. This fact gets lost in the redraws and various pcb remakes
So in one pcb image in post #151 I see BC214(EBC) and BC184(ECB) with labels in red BC640(ECB) and BC639(ECB). This pcb uses ECB transistors. BC214, 2N3906 and 2N3904 will fail on this pcb
In your pcb image post #176 you have these labeld 2N3906 and 2N3904 and appears to wired correctly. This pcb uses EBC transistors. BC640(ECB), BC639(ECB) and BC184(ECB) will not work on this board
Which transistors are you using in your circuit?
This section of the circuit generates your +5 volts, if not working correctly, nothing works
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I guess, the person who draw the diagram did not understand the difference in how to draw wire bridges and inductor symbols in the first place.
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Is this the redrawn schematic of what you have built? Why are there no component labels (R1, R2, C1, C2, etc)? Why is ground shown as +24V? Why are there 10mH inductors all over the place?Originally posted by ZOUjiarui View PostThank you
I know there is a modified version of superscan pi called rospy deep scan in the forum, but there is no schematic.I like the original super scan pi better than the modified version.I've already made it, and it would be a shame if I couldn't.
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One thing that can mess this project up is the transistors. Eric's detector designs, in many cases used transistors with ECB pin configurations. Where as most common transistors use EBC. This fact gets lost in the redraws and various pcb remakes
So in one pcb image in post #151 I see BC214(EBC) and BC184(ECB) with labels in red BC640(ECB) and BC639(ECB). This pcb uses ECB transistors. BC214, 2N3906 and 2N3904 will fail on this pcb
In your pcb image post #176 you have these labeld 2N3906 and 2N3904 and appears to wired correctly. This pcb uses EBC transistors. BC640(ECB), BC639(ECB) and BC184(ECB) will not work on this board
Which transistors are you using in your circuit?
This section of the circuit generates your +5 volts, if not working correctly, nothing works
Leave a comment:
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I think the hand-drawn drawing is correct. It has the same power supply as the gold scan2 sketch that Eric posted on the forumOriginally posted by GeoMax View PostHi ZOUJiarui,
this circuit is also a mess... One look at it and I saw already 4..5 errors. Based on the ciruit diagram sema.pdf, the detector can not work propper.
GeoMax
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Hi ZOUJiarui,
this circuit is also a mess... One look at it and I saw already 4..5 errors. Based on the ciruit diagram sema.pdf, the detector can not work propper.
GeoMax
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Thank you
I know there is a modified version of superscan pi called rospy deep scan in the forum, but there is no schematic.I like the original super scan pi better than the modified version.I've already made it, and it would be a shame if I couldn't.Attached Files
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