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Recent content by z_mx

  1. Z

    Time Delay Controller

    Hi everyone!!!! Does anybody know device or circuit for Time Delay (except LM555 and ADM1087)? for example: Once i open the SW, the circuit will shut down after 10 sec. V+=24[V], I=40[mA] thanks very much))
  2. Z

    spice mode forl ADM1087

    Hi I need a spice model for ADM1087, If someone can help me i will be very thankful. Thanx.
  3. Z

    [SOLVED] constant current circuit (4A) with unstable Load

    hi my friends! i agree! but don't forget that this circuit will work 20ms. i don't need constant current source for the long time (this will be one puls). thanks))
  4. Z

    [SOLVED] constant current circuit (4A) with unstable Load

    hi! thanks for everyone for the replies i solved this problem! here is a circuit: Vzener=4.7V here is a simulation: as you can see: current on R3 from 3.94A to 4.1A. tolerance less than 10%.
  5. Z

    [SOLVED] constant current circuit (4A) with unstable Load

    hi everyone i need to develop constant current circuit (4A +-10%) in temperature range (-45 to 85 C). i mean constant current in temperature range, circuit will work 1 sec. supply voltage 28 V. main problem that my load can be from 1 to 7 ohm (random). i don't know if anybody here had experience...
  6. Z

    [SOLVED] unstable load resistor

    hi everyone first of all i want to say thanks for the replies my problem is: i have unstable load resistor (range from 1 to 7 Omh) in next circuit: i need, that drain current will be constant 4A. what kind of feedback i will must put to the gate from Rload? thanx
  7. Z

    [SOLVED] voltage insensitive to temperature

    thanks you very much for the reply)))
  8. Z

    [SOLVED] voltage insensitive to temperature

    Hello,,, I just hope i am not going against the rules of this site. I am young engineer after college. I don't know if anybody here had experience this problem and should please guide me through.. I need to stabilize voltage between points A and B in temperature range from -45 to +85. Haw can...
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