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    Analog circuit design steps

    You need to know what is outside the box before you can design what goes inside the box. Texas Instruments has an Application Report (SPRA946 - August 2003) that may inspire some ideas...
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    Energy Lost Due To Friction

    It is not a question of "why", it is a question of "whether" your method is intuitive. It is not.
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    Energy Lost Due To Friction

    But your method is not intuitive, so how can it be the conceptually simpler approach?
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    Energy Lost Due To Friction

    You would need to ask @marah (post #30) whether the kinetic energy method cited by @duke37 (post #31) or the retardation force method (post #32) is the conceptually simpler one. I know I've already made my choice.
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    Energy Lost Due To Friction

    Yes, that is certainly true. But there is a conceptually simpler approach. It's somewhat like arguing whether Newtonian or Lagrangian mechanics is the better method.
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    Energy Lost Due To Friction

    There is a less complicated approach. All that is really needed are the three equations of motion in a single linear dimension for a body under constant acceleration starting at rest, relating the acceleration(a), velocity(v), distance(s), and time(t): 1) v = a⋅t 2) s = ½a⋅t² 3) v²= 2a⋅s...
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    Spring constant versus electric repulsion

    That's the answer I calculated.
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    Spring constant versus electric repulsion

    So the spring does not exert any force until the length of the spring exceeds 20 cm. Is that what your equation for the spring force indicates? (the second equation is y = 120x.)
  9. L

    Spring constant versus electric repulsion

    So was the question, "How far does the spring stretch?" or "How far apart are the charges in equilibrium?"
  10. L

    Spring constant versus electric repulsion

    How do you account for the fact that when the charges are 20 cm apart the force in the spring is zero?
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    What will be the output signal of op-amp?

    Texas Instruments has an application note (sboa092b.pdf) that covers operational amplifiers with balanced output.
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    Finite state machine

    The state table will track individual bits, i.e. the bits that encode each state and the input bits that control the transition to the next state. Each of those bits must be given a name that will then become the column headings in the state table. So each line in the state table will document...
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    Comb. circuit

    It would be recommended to use a spreadsheet to construct the truth table, but don't try to use the Boolean logic functions of the spreadsheet to represent the entire circuit at once. There are 4 logic variables (A,B,C,D) as input and one output (Z) so the truth table will have 16 lines. Also...
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    Basic electrical Circuit

    Consulting the dictionary for the meaning of "continuous" yields the following possibilities: without a break, having continuity, uninterrupted, connected. So ask yourself- What would break the continuity of a circuit? Then don't put any of those in your circuit diagram.
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    Ic=C x dv/dt

    FYI: Ratch's schtick is semantics.
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    Voltage Regulation Using Diodes Problem

    See if you can sketch your answer on this as a background.
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    Ic=C x dv/dt

    You seem to misunderstand the situation here. I am trying to help YOU understand how we do circuit analysis with capacitors.
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    Ic=C x dv/dt

    And that would be wrong. One needs to think of this in terms of a complete circuit. The current being measured is the 'I' circulating in the loop. Maxwell provided a correction to Ampere's Law in order to explain why this is so; but that is more complicated than is necessary to understand how a...
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    Ic=C x dv/dt

    Didn't I sufficiently explain what I meant? Perhaps a diagram will provide clarification. The current 'I' in the equation I=C⋅dV/dt is measured as the current flowing through the capacitor. Would there be any other possible way to measure 'I'? What do you think?
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    Ic=C x dv/dt

    Nevertheless, for dQ/dt = I the "I" would be physically measured as current flowing through the capacitor.
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