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Recent content by s.b.v.seshagiri

  1. S

    Datasheet terms -- where to find definitions of them?

    Hi , in google search , type thsese words like how to read op amp data sheet, how to read mosfet data sheet AN-D15, understanding semiconductor data sheets or else i will send weblinks Best Regards
  2. S

    De-rating and MTBF Calculation tool

    for derating and MTBF calculation go through the MIL-217F book for manual calculation , regarding free tool i do not know.
  3. S

    PWM to 0-10V converter

    That concept okay, with this concept are you getting any problem let me where you getting the problem i will rectify the problem
  4. S

    what adc i have to use?

    Your input is slow varying or fast varying or is it process parameter, if process parameter please mention like temperature, pressure e.t.c
  5. S

    A research neuroscientist needs your help making an isolated V to I converter

    Can You send full schematic with details where you really facing problem, i can solve it and i can reply on monday only . Not an issue problem can be easily solved. okay.
  6. S

    A research neuroscientist needs your help making an isolated V to I converter

    Linear Isolation can be done in so many ways but if you send clear inputs to me i can solve it . but any how i am providing the weblinks go through the links you can easily develop your own signal conditioning circuit. weblinks https://www.ti.com/lit/ds/symlink/iso120.pdf **broken link...
  7. S

    How to attach IR Receiver to PIC12F683 ?

    you can use any int0 or int1 like any interrupt pin is the best for IR Receiver interfacing.
  8. S

    need voltage regulator 60V to 12V DC

    yah you can use the LM2575HVT-12 regulator and see the weblink **broken link removed** input voltage range: 4 to 60V unregulated DC supply output voltage : 12V try it you will get easily in local market ---------- Post added at 12:52 ---------- Previous post was at 12:48 ---------- check...
  9. S

    How to attach IR Receiver to PIC12F683 ?

    IR Receiver can be interfaced with normal GPO, but better approach is interfaced to any interrupt pin( are you understand the interrupt pin means it is a hardware interrupt whenever external event (High or Low) the interrupt will be detected by the MCU) and this interrupt will not disturbed the...
  10. S

    analog circuit design jobs for freshers in india

    lot of companies are working in analog circuit design like freescale, cypress, nxp, microchip etc.
  11. S

    Connecting a PT100 2-wire thin film sensor to a PIC16F877A

    for better results use instrumentation amplifier like AD620 or else you can use normal op amp like OP07. or else you can use any op amp not an issue.
  12. S

    Connecting a PT100 2-wire thin film sensor to a PIC16F877A

    for PT100 sensor you need a constant current source say 200uA and sensor resistance at zero degree centigrade is 100ohms then the voltage is 200uA x 100ohms=20000uV= 20mV .ok now the PT100 temperature coefficient 0.0385ohm/degree centigrade then means it almost 0.04ohm/degree centigrade then for...
  13. S

    How much important is quiescent current while selecting Regulators?

    quiescent is nothing but regulator operating current, means regulator itself consumes more current , even when load in off condition power consumption will increase without the utilization of the load. especially it is important in battery operated applications only, at the same time cost of the...
  14. S

    [SOLVED] Problem with ADC when protection diodes added

    yah circuit wise there is no issue, so please try to use BAT54S schottky diode pair and series resistor is not an issue. so test with BAT54S schottky diode pair and verify it and try to put series resistor 10ohms only . May be ADC input impedance problem is occurring with 1Kohm resistor. because...
  15. S

    voltage signal conditioning

    Hi please go through the attachment . it was tested and is working fine

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