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Recent content by mutthunaveen

  1. M

    Contact less water level sensors

    Dear Board Im making a water level controller project for which i need your help. so far what i ve done. - the water im dealing with is salty water, too much scaling - i ve built a water level sensing circuit with normal probes. due to scaling they stopped working - i used stainless steel...
  2. M

    Solenoid coil across Hall effect sensor

    Hmm.. battery is 100V and rated current is 100Ah. and i need to design this in as small package as i can. (so i need to keep almost all components closer). the solenoid to isolate battery operates with 12V and it consumes 1.5A. This 12V and 1.5A should in solenoid coil will create some flux to...
  3. M

    touch switch design ideas needed

    hmm.. interesting. any particular proven ICs?? if you know.. please google will work but someone whos knowledge if share it will be quick and proven. thank you. - - - Updated - - - hmm.. interesting. any particular proven ICs?? if you know.. please google will work but someone whos...
  4. M

    touch switch design ideas needed

    Dears I need design idea in designing a touch switch.. Few days back I saw a touch switch where a copper foil is pasted back side of acrylic and in front side (on acrylic) surface if I touch with finger the light turns ON and OFF. This I saw in YouTube. I could not identify what is the analog...
  5. M

    Solenoid coil across Hall effect sensor

    thanks for options.. :) this is HV battery around 100V (few cells in series) and solenoid coils operate in 12V ... and both + and - terminals solenoid contactors are placed. i have placed them very near due to packaging constraints. to make the package small.. i cannot go with shunt due to...
  6. M

    Solenoid coil across Hall effect sensor

    Hello. My Application is DC solenoid coil isolating batttery -ve terminal from charging circuit. im disconnecting battery after charging or after some operation using a solenoid valve. im worried if the hall sensor pics up solenoid continious flux when solenioud coil is engaged. solenoid coil...
  7. M

    Solenoid coil across Hall effect sensor

    Hmm.. thanks, i think coil is not shielded... and is there any way i can make hall effect sensor work in noisy invironments without any error in current measurement?? or is hall sensor shielding possible?? how can i get out of it?? any suggestion.
  8. M

    Solenoid coil across Hall effect sensor

    Dear Board i have a coil based hall sensor which will measure currents from 100mA to 600A. this is placed just beside a HV switching coil (12V 1A coil). this coil will on off the power from a power source and the hall sensor measures HV current flowing towards load. Im worried if hall sensor...
  9. M

    SIM900 HTT POST any one succeeded??

    Dear Forum i ve done a lot of googling and still failed to get a working example for SIM900 HTTP post request here is my code after internet connection successful AT+HTTPPARA="CID",1 AT+HTTPPARA="URL","http://blawebsite.comli.com/log_tempt.php" AT+HTTPDATA=7,10000 --> the module requests with...
  10. M

    [Moved] CANalyzer and VB6 or higher

    Dear Board i ve Canalyzer with me and i know basic CAPL scripting. with CAPL i can do some test cases successfully for easy working. But i need to implement image processing but i dont know how to do it with CAPL. so, i plan to take canalyzer COM server to VB6.0 and send some message from...
  11. M

    millivolt measuring readymade IC

    Thanks for ur reply,.... i used a SMPS powersupply unit which will give +12V & +5V as output voltage with 2A max current... but multimeter shows stable voltage when measured..... and the PIC is connected to same supply... with 2200uF & 0.1uf as supply filter (+5V only used) and at...
  12. M

    millivolt measuring readymade IC

    hello Board im trying to make a milli Volt alarm (a band (55mV - 350 mV) where beep comes and outband buzzer will not blow) for my application. i have made ADC based voltage measurement using 16F877A PIC. when i measure at test points of my circuit the Multimeter reading shows 68mV exactly...
  13. M

    problem with K-type thermocouple

    Thanks a lot mrcube_ns. i understood now, this is a great help for me to at least attain the better accuracy.... but 1 quest i can't place the AD595 near the furnace around 900'C because the soldering and wires get melt (i am not sure) and AD595 operating temp is also less than what it...
  14. M

    problem with K-type thermocouple

    Hi FvM can u explain me plz in detail how can i compenciate this 1. should i hold the K-type fused point in AD595 for some time 2. or should i have to add some electronic circuit in order to get good results please reply me
  15. M

    problem with K-type thermocouple

    i have designed a small project which monitors the temperature i went for K-type thermocouple due to its wide range of temp measuring i used AD595 as the conditioning ckt for my project K-type thermocouple to AD595 and form AD595 to PIC 16F877A ADC. this is how my project build... i initially...
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