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  1. Z

    Temperature Sensor help

    i am stuck with the circuit because i don't know how to connect the temperature sensor because it has 3 pins, and i don't know which one is going to the human body i will be very grateful if anyone can redraw the circuit for me and i don't know whether the circuit will work or not. and this what...
  2. Z

    Temperature Sensor help

    hi duke 37 is that what you meant?
  3. Z

    Temperature Sensor help

    thanks what changes do i need to make to get sensible number and which pin of the amplifier goes to and which one goes to sensors. can you help me and sketch that for me please
  4. Z

    Temperature Sensor help

    hi do you think the final diagram will be like this but i don't know how to connect the differential amplifier to the cercuit
  5. Z

    Temperature Sensor help

    hi i would be very grateful if you could sketch the final diagram for the circuit please
  6. Z

    Temperature Sensor help

    hi this diagram shows how the reading will be. when you connect one sensor it will read eight negative or positive when you connect both it will be in the middle is there is no difference in the temperature between those two points i need to have amplifier in order to sense the small difference...
  7. Z

    Temperature Sensor help

    Hi duke 37 thanks for reply How would th he circuit would be then after considerable amplification zaid
  8. Z

    Temperature Sensor help

    I just wanted to know where to put the differential amplifier in the cercuit. any help
  9. Z

    Temperature Sensor help

    Hi Dave thanks alot for your reply I am using 2 sensors because I would like to measure the difference in temperature between 2 points therefore it was nessesaty to use 2 sensors. i just would like to knowhow to cariblate the sensors
  10. Z

    Temperature Sensor help

    i am looking for a circuit to measure difference in temperature (+ or -) on the human body. the distance is between two thermal sensors is about 5 cm, and the reading range is between 0 -50 Celsius. i have a circuit but i need to make it more sensible. i was thinking of adding differential...
  11. Z

    What value of resistors do I need and a sanity check

    hi thanks alot Kris i would like to ask if i would like to increase the current upto 10 mA to use it between the hand and the feet via normal electrodes what amendment i have to do in the circuit in order to have that output?
  12. Z

    What value of resistors do I need and a sanity check

    hi thanks Kris for all your valuable advices
  13. Z

    What value of resistors do I need and a sanity check

    hi Kris many thanks for your suggestions Kris I have simulated the circuit in multisim and it worked perfectly but i have 2 problems 1- the load i use is 6k ohm and it doesn't give me the right output current values unless i use 600 ohm as a load (I have measured the resistance between the two...
  14. Z

    What value of resistors do I need and a sanity check

    current limiter hi Kris thanks for your reply i would like to know if there is something called current limiter (not regulator) by using transistor and feedback from the output? what do you think of the attached circuit? How can i make the current limited to 5mA? or the other one? many...
  15. Z

    What value of resistors do I need and a sanity check

    Thanks Kris thanks a lot Kris for your circuit your submitted i used LM334Z chip to build the circuit and it worked with me. but i faced problem which is i can't control the output current by changing the resistor value, and i overcome this problem by adding a potentiometer in series with the...
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