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I am providing you the complete list of 49 free electronics software which are used for the schematic and more electronics purposes..... http://www.efytimes.com/e1/132694/Free-Software-On-Electronics And on 50th tool which I have used, is Logisim. This tool provides the basic digital component to make any electronics circuit even microprocessor. This is ...


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The preamp-circuit was from here: http://www.4qdtec.com/preamp.html A few biasing resistors were all that was missing and it works after adding them in proper places.


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You probably have a serious mistake: If GND_PHY1 is the analog ground, why the termination coupling capacitors (c9-c12) are not connected to it? (in the schematic you shown they are connected to the ground marked by a "earthing" symbol) also, tied together pins 10, SHA1 and SHA2 of U8 could be connected to the chassis ground, if any. pin VCC at u8 should ...


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I think that you can safely assume that the inductor symbols are indeed ferrite beads. I base that on the filled rectangular block used for inductor L2. R18 is an adjustable resistor (potentiometer). The arrow indicates the clockwise direction. That is: the wiper moves Down as the shaft is turned clockwise. Note that this could be a front-panel ...


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I have been continuing my work on the libraries and it appears that it does NOT update automatically. Perhaps there is some configuration somewhere, but it looks like the default requires you to remove the old footprint and re-add the updated one.


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1) The best way to reduce heat, assuming you insist on a linear regulator, is to use separate secondary windings to produce the raw voltages on your regulators. 20 VAC is OK for 25 volts, but 12 - 15 VAC for the 12 volt supply and 6-8 VAC for the 5 volt supply is much better. Of course, then you need separate rectifiers and raw DC capacitors, too. 2) If you ...


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A proper variable power supply will employ multiple taps from the transformer. As you reduce your output voltage below each tap's threshold it will switch to the next lowest tap to keep the power dissipation at a minimum. The more taps you can afford on your transformer the more efficient it will be. Using linear voltage regulators to reduce a large ...


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If you want a reliable power-up reset, a simple RC is not the way to do it. The capacitor you suggest (plus a diode across R1 to discharge the capacitor when power is removed) will sort-of work most of the time, and some crappy products actually use something like that. Instead it would be better to use a supervisory circuit such as an ADM803 (open drain ...


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-For the error 1630, try this -> http://community.cadence.com/cadence_technology_forums/f/27/t/12775 -1601 error is most likely due to duplicate of that part in another library with the same name. Press P, select all libraries and search for that part. If you can find the second one, delete it, or give another name.


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Solution found: to see errors in the Compile Errors tab the following steps should be done: Compile project Open View-->Workspace Panels-->System-->Messages tab Here you can see all warnings and errors, double clicking on an item will show the speific error in the Compile Errors tab


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Red, green, and the smaller blue all serve as decoupling for the supply lines. They act as a low-pass filter in order to remove fast transients from the supply and to prevent transients the circuit generates from affecting other circuits on the same supply. The larger blue acts as a bulk capacitor in order to maintain the voltage in the subcircuit during a ...


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It stands for "Do Not Equip". It indicates that pads will be created for the device but that the device will not be populated during manufacturing. Instead they will be available for end user use to tweak or configure the device as appropriate.


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No, your "charge pump" circuit doesn't make any sense and won't work. If you look at the equivalent circuit in the datasheet (figure 51 on page 21), and then read the functional description on page 8, you'll see that it's much more complicated than that. The charge pump monitors the output of the input comparator, and on every transition, it charges or ...



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