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  1. R

    Vacation

    To All, I have returned. My wife and I had a great time. Ate too much. Nobody found or used my house. Ratch
  2. R

    Vacation

    I will be absent from this forum starting Nov 4 for 2 or 3 weeks due to vacation. Ratch
  3. R

    series parallel RC circuit help

    Why, it stores energy within its magnetic field. I heard of a duality principle for light, but not for electronics. If there is any current present in an inductor, it would not be wrong to say it is energized. Whenever it forms a magnetic field, energy is being stored. Ratch
  4. R

    series parallel RC circuit help

    What's wrong about that? They were needed and used. Quoting Shakespeare are you? Correct understanding is important Please articulate how "simple" got violated. New ways of perceiving something does not necessarily mean complication. A fully energized capacitor not being equivalent to...
  5. R

    series parallel RC circuit help

    Beginners should first learn that the jargon or slang does not usually describe what is really happening. Professionals should not use jargon to communicate with laypersons. The purpose of a capacitor is to store energy. Accumulated voltage and charge imbalance are useful side effects. Why...
  6. R

    series parallel RC circuit help

    Fully energized means the caps are energized as much as is practical for that application. Ratch
  7. R

    series parallel RC circuit help

    Slang is like a foreign language, or communicating with grunts and gestures. It usually is not descriptive to the layperson who is not knowledgeable about a subject. Those in the know can blow smoke rings at each other to communicate, but slang can be confusing or impede learning for...
  8. R

    series parallel RC circuit help

    Not good. Physics is the foundation science of electronics, and cannot be ignored. So will lots of other books. No one book covers everything. Ratch
  9. R

    series parallel RC circuit help

    That is a slang definition. A capacitor is a energy storage device, so its status should be defined with respect to the amount of energy it contains. That's "fully logical". You could say a capacitor is charged with energy, but then you may as well say it is "energized". Protons and...
  10. R

    series parallel RC circuit help

    Everyone can understand physics if it is kept simple enough. Analogs are good for illustrating a point, but not for describing how something works. When that happens, the explanation usually has to be unlearned and a correct explanation assimilated. Ratch
  11. R

    series parallel RC circuit help

    If you said "fully charged" to me, I would ask you what the caps are charged with. The slang and idiomatic expressions are more confusing than the correct description. It is not a matter of knowing the physics. Describing something correctly avoids confusion. Ratch
  12. R

    series parallel RC circuit help

    The following points can be made. 1 Capacitors are not ever "charged" (with what?). They are "energized" to a certain energy level (joules or voltage). Saying capacitors are charged is using technical slang that does not literally describe what is happening. 2), A capacitor does not block...
  13. R

    Differential amplifier

    I agree that if all the resistors are equal, then Vo = - V1+V2. Ratch
  14. R

    Differential amplifier

    Doesn't R2 and R4 have anything to say about what the voltage will be? I think you should reconsider what the voltage formula is. Ratch
  15. R

    Another transistor discussion

    Makes no difference as far as their integration into other circuits. Just like a capacitor, resistor, or inductor. By themselves, they are just components. But combined properly into a circuit, they are part of a useful development. Knowing the physics of a BJT tells you why the Vbe is...
  16. R

    Another transistor discussion

    Hi. Go ahead, I hope we can answer it. Definitely You know how to connect up an op-amp to be an amplifier. Why are you not asking how two external resistors are setting the gain of the op-amp? You are forgiven and forgotten. Why are you not asking what can an op-amp do without outside...
  17. R

    Another transistor discussion

    I stand by what I said. No matter what configuration you set up, you are adding external components to the transistor. This means that you are no longer working with just a device. You are instead working with a transistor circuit. I aver that the transistor within the circuit will still act...
  18. R

    Another transistor discussion

    To summarize what happens in a BJT biased to be in the active region. 1) The base current Ib is leakage or waste current that does not contribute to the amplification function of the BJT. It is current from the base-emitter diode that does not get sent across the base collector diode. Careful...
  19. R

    DC current help

    Most authors have two names, a first one and a last one. Which is "Mills"? No the charge carriers (electrons in this case) are driven by an electric field which is a function of the voltage. There are no positive charge carriers in this circuit. There is no second current. It is all one...
  20. R

    Electronic help

    Who should view this? What is its significance? In any case, the image is about the size of a postage stamp and can hardly be read. Ratch
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