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  1. R

    Small solar power constant charge to charge a big capacitor.

    Although just about the whole world uses technical slang by saying a capacitor "charges" and "discharges", that is not correct. A capacitor contains the same charge at any working voltage. For any charge a voltage inserts onto one capacitor plate, the same charge leaves the opposite plate for...
  2. R

    Small solar power constant charge to charge a big capacitor.

    The west triangle is correct for energy dissipation of a resistor, but wrong for energy storage of a capacitor. The correct formula for capacitor energy storage is . The reason a capacitor is different is because, unlike a resistor, a capacitor cannot change voltage instantaneously...
  3. R

    Hi, center tap transformer, how to calculate?

    I still don't have a definitive two points from where you want the impedance. I will guess that it is the two red dots on your schematic. That makes it two parallel branches, one of which contains L1 and C2 in series and the other just C1 by itself. The calculation of the impedance is shown...
  4. R

    Hi, center tap transformer, how to calculate?

    Calculte (sic) what result? You have describe what you want to calculate. The impedance between what two points? What component is 10.7 Megs? What imedance (sic) are we referring to now? What is "other"? Ratch
  5. R

    simple resistance calculation exercise

    That will work, but it is the hard way to do it. A easier and quicker way is to use node analysis to find the voltages at the R1-R3 node and the R3-R5 node. Two equations and two unknowns. Once those two voltages are known, then anything else can be easily calculated. Ratch
  6. R

    simple resistance calculation exercise

    Do what? I see no definitive statement from you about what you want to do. Is it "A", "B", "C", "D", or all the above? Why not submit the image in landscape format instead of portrait format so we can view the problem without lying down and avoid the truncation of "A" ? Ratch
  7. R

    WheatStone bridge

    I did specify calculated current in my remark above. Anyway, the calculated mesh current will always give the "real" current direction according to the mathematical convention to which all ammeters are marked. If a negative current is encountered in the calculations, it means that the assumed...
  8. R

    WheatStone bridge

    I aver that calculated mesh current does represent the real current that is present in a particular mesh. Ratch
  9. R

    WheatStone bridge

    Because that is the direction defined by I1. The total current is I3 - I1 . Since I3 is greater than I1, the total current direction will be from point D to point A. Same type of answer as above. You have to consider the total current, which includes I3. Yes, higher voltage to lower...
  10. R

    How to learn pointer in easy steps

    A pointer is simply an address. It does not have a problem statement. Using pointers is only limited by your imagination For instance, you can declare a table of pointers and index into the table for a specific data word that the pointer addresses. Ratch
  11. R

    How to learn pointer in easy steps

    A pointer is the same in any language. I don't understand your problem or question. You first define correctly what a pointer is, and then give an example of how to implement it in the C language. That is like an experienced taxi driver asking what the brake and gas pedals of a car do. What...
  12. R

    I have created a Mathematical Construct that will change the way we do maths !

    What will replace or represent the values expressed by negative, irrational, and duplex (imaginary) numbers? Ratch
  13. R

    Understanding N channel and P Channel FETs

    The JFET reduces current by pinch-off. A depletion-mode FET reduces current by channel degradation. They are two different phenomena. Ratch
  14. R

    Understanding N channel and P Channel FETs

    If you made a enhancement JFET, it would not be a JFET any more would it? Ratch
  15. R

    Understanding N channel and P Channel FETs

    Correct. Ratch
  16. R

    Understanding N channel and P Channel FETs

    Wrong, wrong, and wrong. Ratch
  17. R

    Understanding N channel and P Channel FETs

    You have a right to be confused. There is a lot of confusing information about transistors everywhere. Let's start with the enhancement type MOSFET, also known as the insulated gate FET or IGFET. Below is a picture of the structure of a N-channel enhancement MOSFET. A P-channel enhancement...
  18. R

    Is the following a universal gate?

    Look at the link given in post #30 of this thread. At the very top is the title "Basic Gates and Functions". Ratch
  19. R

    Is the following a universal gate?

    Even though a NAND gate can be thought of as an AND gate with an NOT attached to the output, it is defined to be a single basic gate. Regardless of its inversion ability, that property in baked into the definition and the NAND is considered to be a single entity, even though mathematically, it...
  20. R

    Is the following a universal gate?

    True, but it is based on the observation that creating a complex gate out of two or more basic gates, and calling it a new single gate, is cheating a bit on the definition of a single gate. Ratch
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