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| Before I go and put these designs to P.C.B. thought I would ask if somebody if they can look over these designs check them for me Please. I have put them as attachments. Try to use Print Screen and Paint but the paste was grayed out could not use it. anticpation of you Help Thank You | |
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| Attachment 17638 Quote:
The original design used one IC 556 I tryed to convert by using two IC 555 the reason I tryed to convert it is could not understand the design. I will put the disign into the program I use and convert it. Thank you for your help. Last edited by peter5355; 27th February 2008 at 08:35 AM. | ||
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Have went back to the drawing board tryed to use the ic 556 which is on the previous post please please help me with this project Peter | ||
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Have included Schematic Diagram for the Chip 556 Timer any help you can give me on this matter would be much appriciated. Peter | ||
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Your reply to my comment about the ground plane being floating was a non sequitur. You need to connect everything that goes to your negative battery terminal to the ground plane. You won't need to connect this node on the bottom side of the board if you do that. You can use thermal reliefs at each connection. | ||
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I am still trying to get to grips with the CAD program PCB Wizard 3 as you already know I have not set it up properly that is because I don't know how to if you can help me with setting up CAD program PCB Wizard 3 that would be great I will try and do it myself today. I need to set up the thermal reliefs on the Pads and different colours for the + rails - rails is there anything else that I need to set up in CAD Program Thank you for all your help so far Peter | ||
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| So what is this supposed to be? Your schematic has two 555s in it, but you have one 14 pin IC in your layout. If you're going to provide a schematic, it needs to match your layout. You seem to have confused the + and - terminals of your battery. What kind of transistor is that? Different types have different pinouts. There is a questionable connection in your schematic (see below). Is it connected, or not? | |
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