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Step 2Designing the schematic diagram
After I had chosen the components, I had to draw the schematic diagram of this circuit. For this purpose I used the Splan 5 that is not freeware but it is a very cheap schematic diagram software.
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Dec 24, 2007. 12:44 PMZak
says:
Would it be an idea to change the input stage a bit? I would suggest a non-inverting input. Seen from the input side, in series: a resistor (overvoltage protction) connected to the positive input of the op-amp. Diodes from the positive input to the pisitive supply and negative supply, to take any current resulting from over-voltage. If AC input is required, put the capacitor in series with the actual input and add a resistor to ground, then the protective resistor and the rest. This allows connecting the input in AC mode to a 200 volt line and seeing some noise there.
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