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  1. V

    Not Gate

    Thanks a lot for all.......
  2. V

    A project, help

    Ok..... But if my set signal stays for 3sec or still longer, then what type should I use. Another thing the input signal is of +3V.
  3. V

    A project, help

    Tell me which type of Flip Flop should I use to serve the purpose. SR F/f with 7400 and 4011 was unsuccessful.
  4. V

    A project, help

    What is the difference between TTL & CMOS in working (as digital gate ics)? Is CMOS superior to TTL?
  5. V

    A project, help

    How if I use 7400 (used as SR type F/f)? for this?
  6. V

    A project, help

    Can you please give me the design of this "flip flop"? regards, vivekanand
  7. V

    A project, help

    Hi all, Now I have a project. Let me tell like this : 1. There is a chip which emits a +5v signal (of very sort span) when one condition is satisfied. Like a blink. 2. I want to take that "one blink type signal" and switch on an LED. 3. If I use, NPN and give that signal to base, then the...
  8. V

    Not Gate

    Is this the only way to create? If not, then is there any other way so that battery power is saved? (When this switched is closed, the 3.3k will consume some little current) Is this model called a "digital inverter"
  9. V

    Not Gate

    Hi, Ofcourse, there is nothing in the dotted square. It is to show the point of question only. I know about push to break switches and relays to do this. But basically I need such transistor topology to adapt in my various projects. I will be grateful if one tells me how to use transistors...
  10. V

    Not Gate

    Hi, I am attaching the schematic design of this. It is not so complicated design. Rather very simple. Details : Source = 3V DC, Always the path AB is closed (NC). If I press the switch, then the closed path of AB should be cut off as long as the switch is closed. I hope it is clear. regards, v
  11. V

    Not Gate

    The thing is: There is one circuit which is "normally closed" so that one LED is on. If one particular signal comes, I want, that the "normally closed" circuit should be open, till that signal lasts. This I can do it by a relay. But I wish to know what is the transistor equivalent for this...
  12. V

    Not Gate

    Hi all, I want to construct a simple transistor based NC (Normally Closed) type of switch; which should be open when there is a signal. Please guide. Vivekanand.
  13. V

    Not Gate

    Yes. I want to make a transistor based digital inverter circuit. Please guide me. Vivek
  14. V

    Not Gate

    Dears, Which transistor/s should be used (how?) for creating a "not-gate"? And what should be the arrangement in order to cut-off the circuit if there is a specific signal? (using not-gate) Vivek v
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