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  1. KUMARA SHP

    Need Help to find suitable magnetic sensor

    Hi I need magnetic sensor, that produce analog voltage proportional to magnetic field. I found linear hall effect sensors. http://www.analog.com/media/en/technical-documentation/data-sheets/AD22151.pdf https://www.diodes.com/assets/Datasheets/AH8502.pdf But I need ominipolar 1D sensor with...
  2. KUMARA SHP

    12V to 33V Converter

    Hi I am looking for 33V boost converter. Min output current = 300 mA I found this design, but not sure about it. Please help me. I also like to use different circuit. Please suggest me a chip or circuit. Thanks
  3. KUMARA SHP

    LT1440, battery protector need to use with 11.4 V battery

    Hi I designed circuit to protect battery from over discharging. But I can find those protector chips upto 11V. But my battery is 11.1 V nominal voltage. It max voltage can be go upto 12.4 V, so can I use below design? I added 3 resistors to compensate 2.1V so that IC will not burn. will it...
  4. KUMARA SHP

    Design Power Bank -Need help to select IC

    Hi I need to design Li-polymer battery power bank that charge from solar input and output 5V/1A. I selected this chip and attached image is what they have given as schematic. I have few questions. 1). is my selection is good? http://www.ti.com/product/BQ24195/datasheet Next questions are...
  5. KUMARA SHP

    Problem on WTV020SD-16P music module

    I am doing small project, I will explain what my product is. It has 2 sounds in a memory and I need 2 buttons for each sound and one button to pause and play. so I choose this as cheap chip for do it. http://letsmakerobots.com/files/WTV020_manual_V1.3.pdf But I do not know how to get the keys...
  6. KUMARA SHP

    Frequency Response of split core current transformer

    I brought split core current transformer . I want to find it's datasheet or I want to get general idea about it's frequency response. because I am going to measure current of switching mode charger , since it contains high frequency componetes I should make sure that my readings are correct . I...
  7. KUMARA SHP

    pnp switch problem

    here is my design. it is use to power up 12v common anode display. It takes 300mA when fully lit. I need to confirm that this design is good for that. what do you recommend? this one or another circuit?
  8. KUMARA SHP

    need help to write simple program

    I am going to write to make speed meter I use 7 segment display with display drivers here is the circuit using micro c for pic can you help me to do it. I am really new to programming.
  9. KUMARA SHP

    Need help to these parts in Digikey or Mouser

    ttp://www.ebay.com/itm/371242126736 http://www.ebay.com/itm/251373235118?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT http://www.ebay.com/itm/261633475934?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT is there any way to find this components from sites like digikey...
  10. KUMARA SHP

    Need your advance help to verify my design

    here is my ardiuno based motor control circuit I feel all the things are fine but please look at it and tell me your comment thanks
  11. KUMARA SHP

    Need advice to buy a generator

    Hello, here is my problem. I am buying two (2) TurboChef Fire Pizza Ovens (spec sheet attached). I want to know what kind of generator I would need to power them both up and run them continuously safely. My preference in generator is the Honda EU class for its low noise levels but any other...
  12. KUMARA SHP

    Anyone know 220nF (400VAC) 7.5mm lead pitch capacitor?

    I have designed led driver for 230V Ac. used capacitor as mentioned in title in my PCB. now all are ready. but anywhere I can't find 7.5mm lead spacing capacitor. can anyone help me. thanks
  13. KUMARA SHP

    design score broad for a game

    I am currently doing micro controller based score broad. here is the schematic I am going to use large displays. so I want to use mosfets. any one know IC that contains 8 mosfets? also I need another copy of this circuit for other side( for 2 teams-need 2) so is switching cost effective...
  14. KUMARA SHP

    help me to find datasheet for this mosfet-I have strucked

    I am going to design power bank they have given BOM but I can't find this mosfet what is it?
  15. KUMARA SHP

    Drive LED array according to frequency

    i Need to design or buy circuit which drive 6 (or more) leds according to my stereo headset input. is this can be convert to it? http://www.ebay.com/itm/x1-NE555-CD4017-LED-Light-Chaser-Sequencer-Follower-Scroller-DIY-KIT-USA-/171522962328 here image shows some signs that can be use. this...
  16. KUMARA SHP

    design ,mobile power bank

    I am going to make mobile power bank with 3.7V li ion battery. this is what I selected IC this is given diagram from ti.com but I have questions 1. here adapter means input (power input for charge the battery) ? 2. what is host? 3.is phone tablet means output for charge the phone? 4.if yes why...
  17. KUMARA SHP

    230V led driver, which one has low failures?

  18. KUMARA SHP

    is my idea correct about computer power supply?

    here is diagram of supply I hope to replace it with dc supply. so I hope to 24V battery and convert to request voltages(5,12,3.3,...) but how much amperage sufficient for each voltage? how can i know that? any advice?
  19. KUMARA SHP

    help me to design simple buzzer

    I am going to design peizo buzzer , I need 90 beeps per min, 1.5 Hz I am going to change this circuit how I change this to get 1.5Hz frequency? I do not want to go 555 ic based designs thanks
  20. KUMARA SHP

    LED bulb design- how to find luminance

    I am designing LED bulb to operate in 30mA and 48V but I need to know the output luminance of bulb how can I get it from this graph? I know luminance at forward current 65mA is 32lm.
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