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  1. (*steve*)

    Partialy Discharging Capacitor

    Without a circuit diagram that tells us nothing we don't already know.
  2. (*steve*)

    Partialy Discharging Capacitor

    Flash units which use this method typically do it in order to make a longer duration flash so as to allow for a shutter speed faster than the sync speed for the camera (we're talking final plane shutters). Perversely this longer duration flash results in a fraction of the power being available...
  3. (*steve*)

    Partialy Discharging Capacitor

    Yes. You cause the SCR to fire a short time after you trigger the flash tube. The remainder of the charge goes through the SCR rather than the flash tube. This causes a shorter flash with less total power. Be careful that your SCR can handle a very short, but very high current pulse. Also...
  4. (*steve*)

    100MHz Schmitt Oscillator

    Yep. It's not particularly cheap, but it should deliver a stable and relatively accurate frequency.
  5. (*steve*)

    HP 54510A Power Supply Smelling

    Ok that's great. It means the fault is with the protection circuit. All we need to do is figure out why.
  6. (*steve*)

    Working of a JK Flip-Flop. Help needed with the circuit.

    Oh ok, I see what you mean. What flip flop do you have? Give us the full part number. There are important differences between logic families which will trip you up if you're not aware. Also the type of flip flop will decide what we can simply do with it.
  7. (*steve*)

    development of framework for microcontroller?

    Does that compiler produce code for the 8051? You write code that will run on the microcontroller, not on the PC (unless you are writing the development environment (aka framework)) Have you ever written any code for a microcontroller? Is there any reason you want to write code for the 8051?
  8. (*steve*)

    Calculating resistance of winding in coil conductor?

    Well, you can start by calculating the length of the wire used to wind the coil
  9. (*steve*)

    Dynamo Motor Sparks Inside

    That fear you feel is your body's natural response to playing with things that can kill you in an irreversibly dead manner.
  10. (*steve*)

    Terahertz scanner: does it work?

    Your body emits THz radiation. If it was harmful on this scale we would never have children.
  11. (*steve*)

    development of framework for microcontroller?

    I don't understand. I would think both of these are part of the framework. The framework is all the stuff you need. If you need it, it is part of the framework (by this definition). The framework also includes stuff that makes it easier to use (that would be the stuff they say was written in...
  12. (*steve*)

    development of framework for microcontroller?

    I would have read on to the next sentence:
  13. (*steve*)

    Autotransformers

    Please provide a schematic as requested above. If you're doing what I great you might be, the DC output will not be stable, it will vary with load. However, if the aim is to vary the ac voltage input to the rectifier/filter so as to maintain a reasonable overhead to a linear regulator, then it...
  14. (*steve*)

    Working of a JK Flip-Flop. Help needed with the circuit.

    I just googled for "jk flip flop schematic" and it gave me one (actually two).
  15. (*steve*)

    JK Flip-Flop + D-Type Flip_flop

    Flip flops have all manner of uses. Another one is to act as a latch, holding the value of an input at the time the flip flop was clocked. They can also be used to debounce switches. Google may be your best friend here. It will probably give you the thousands of answers we can't be bothered...
  16. (*steve*)

    100MHz Schmitt Oscillator

    At very high frequencies the output is current limited and the edge case has the output swinging between the input hysteresis values. The output also looks a lot like a sine wave. Depending on whether the rise/fall times or the propagation delay dominates, the actual output will tend to look...
  17. (*steve*)

    100MHz Schmitt Oscillator

    Oh, another thing you need to remember is that propagation delay is for each transition. You will have one delay for high to low and another for low to high. However, you might find this of interest.
  18. (*steve*)

    100MHz Schmitt Oscillator

    I would suggest that it is possible. The propagation delay quoted is for an output capacitance significantly greater than the input capacitance of the gate. Not so long ago I managed to get 84MHz out of a much lower spec device. Having said that, there is a difference between getting it to...
  19. (*steve*)

    Need help understanding data sheets

    Apart from that, the most important specs will depend on what role the component is playing. For a resistor, it might be tolerance, tempco, voltage, current or power (along with resistance!). Oh, or inductance, or any of the other specs. None of the specs are useless -- they will be important...
  20. (*steve*)

    Reverse Polarity Protection (some questions)

    Oh hang on, I see. Once the connection to the non-ground side of the battery is broken by the fuse blowing, current will stop flowing. Current will not flow unless there is a path to both sides of the battery.
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