Electronic Mini Projects Circuit Knowledge Base
Electronic Circuits with IC 723, IC 741 or IC 555...? I am a First Year Diploma in Electronics and Communication Engineering student. I am studying in Second Semester. I have to do a mini-project for the subject called Electronic Components and Applications. The electronic circuit has to be the PCB containing max. 15 components with at least one IC from IC 723, IC 741, IC 555. I have to find out 3 electronic circuits each meeting the requirements and one having IC 723 the other with IC 741 and the third one with IC 555. Among them I will make a PCB on one of them. My questions: 1) Where can I get electronic circuits for making pcb on internet according to my requirements? 2) Can u suggest me a book? 3) Can u suggest me a good CAD software for designing PCB? ... Currently I have ExpressPCB 5.6.0 4) Where can I get PCB artwork rules in internet or any good book? Thanks for ur help........
I want to lap the surfaces of an OEM passive CPU heatsink and possibly the CPU itself; what materials? What materials are used for such a project? I understand the idea that regardless of quality manufacture, an OEM CPU heat-sink (in this case on an Intel BOXD945GCLF2 Atom 330 Intel 945GC Mini ITX Motherboard/CPU Combo) will not be a perfect flat surface. So the need to lap its surface is obvious to me. However, would there be a reason to not lap the surface of a CPU? I have no idea. I have never lapped computer components and I do know that doing something that may seem innocent could destroy an electronic component (such as a static electricity discharge that cannot even be felt can damage an integrated circuit). I feel that I will have to stick with the OEM CPU heat-sink as I have not found an aftermarket heat-sink for the Atom 330 processor. Given that the processor runs on such low power, it probably does not need much more than the OEM heat-sink. On the other hand, the Northbridge is equipped with a heat-sink and fan from the factory. At the very least, I plan to lap that heat-sink and replace the fan with one of high quality and possibly a lower sound level. So, am I making any big mistakes? And, of course, what is a proper method for lapping surfaces in this application? Coldsomewildpaddle: Thank you for clarifying the situation. What you say does make sense, especially as I do intend to run this bugger at stock speed and load. I just enjoy being a perfectionist. However, what will others say? We shall see.
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