Search results

  1. K

    diodes

    They always conduct. No matter what. These two circuits are different. Resistors don't clamp a voltage. The voltages halve, halve, and halve again until Vp.
  2. K

    Simple voltage regulator

    It is versatile.
  3. K

    computer power supply

    I've got a computer with an external DC power supply. Does this affect the serialcom connection?
  4. K

    0v-30v power supply

    Here is a good 3A 0v-30v power supply.
  5. K

    1-25 volt power supply

    This might be an easier to use power supply than the other one.
  6. K

    electromechanical circuits

    Oh, wrong project.
  7. K

    28volt power supply

    I changed the opamp load resistor from 100K to 200K. But of course the voltage regulation is no where near as good as the 30V Stabilized Power Supply.
  8. K

    1-18volt variable power supply

    Modified. The 1-25volt variable power supply is the preliminary design.
  9. K

    1-25volt variable power supply

    This is a preliminary design of a variable power supply I might develop. All ideas and comments are welcome.
  10. K

    Inverter oscillator

    I'm designing a simple inverter oscillator. There are one or two designs depending on if the logic is bipolar transistor or fet. Is it the bipolar transistor logic which requires a 0v sink current? Does the fet logic only require nothing to output high?
  11. K

    field effect transistors

    Can field effect transistors be used at a very low current in a common drain amplifier?The source resistance is very low and a high reverse VGS is used.
  12. K

    voltage regulators

    Why are zener diodes used in some voltage regulators? Gain dependant on voltage circuitry can deliver any regulated voltage as long as the AC power supply, rectifier, and filter produce the same result. Standard voltage regulators have been use throughout the industry and are in integrated...
  13. K

    field effect transistors

    http://www.colorado.edu/physics/phys3330/phys3330_fa05/pdfdocs/AN101FETintro.pdf This is a good article I came across describing the developments in field effect transistors. A must see for electronics enthusiates interested in physics. MODERATOR EDIT: Link fixed.
  14. K

    analog ammeters

    Are analog ammeters worth purchasing? I'd like to buy a few low current ones. I've never seen them used in low current circuits.
  15. K

    IC compatability

    Many analog IC's require very large external design to be compatible with a system. Aren't there more variations to IC's that are more useful and less accurate? The whole of the circuit design is very limited. Not knowing much about the availability, are there more manufacturers with better...
  16. K

    voltage amplifiers

    Integrated amplifers have become synonymous with circuit development. Their gain or their function is excellent as is shown by specification. But most designs are very large and dependent. Do you guess on which IC might be the right one?
  17. K

    magnetic motors

    What advantages do permanent magnet motors have over electormagnetic motors? In low power applications, a permanent magnet can be used, but for what purpose? They are always reliable by their design. Does it make them power efficient?
  18. K

    RF coupling transformers

    Do RF coupling transformers ever step up or step down voltage? I have only seen them used in a few applications. Are they inefficient signal coupling devices?
  19. K

    varactor diodes

    Does a varactor diode release any stored energy when the voltge is removed, like a capacitor or inductor does?
  20. K

    Pulse transistion time

    A circuit based on a 1KHz clock has a longer pulse transistion time than a 10Khz clock. But couldn't it have the same transistion time? Is there a circuit to reduce pulse transistion time and make a low frequency digital circuit perform better?
Top