Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Recent content by elex101

  1. E

    HDD needs power reset for detection

    I have two SATA HDD during power ON the booting completes. My problem is during powering ON I need to restart the system. Whats the possible cause of this? Are there anyone encounters like this problem?
  2. E

    sim900a restarting frequently

    Can you share your schematic.
  3. E

    How to wire an EMR (electromechanical relay) ?

    Your switching or triggering circuit (low power circuit) should be connected to pin 13 and 14 only. And the device/s you want to control (high powered) will be connected to one of the four channels. Ex: Source1 to power Device1. Source1 is connected to pin3 and Device1 to pin2 leave pin1...
  4. E

    need help regarding OPTO coupler TLP250

    http://cn.100y.com.tw/pdf_file/TLP250.PDF[/url] refer to this datasheet. VOH is slightly affected by IL as dictated by your load.
  5. E

    BT + FM Transceiver single Chipset

    Hi guys Im looking for BT+FM Transceiver Chipset. These BC7820 or BCM2049 seems a very good choices from broadcom and CSR respectively. Is there anyone knows where to find comprehensive datasheet of these part numbers? Comrehensive (Datasheet with electrical parameters, pin-outs and description...
  6. E

    DTMF dialing MT8880 interface with PIC16F877A programming problem...

    You can try one path line (TX or RX) at a time. And check w/c path is working or not working at all. For Transmission of DTMF, if still not working, you can try coupling capacitor from tone to the transformer.
  7. E

    Explain me the concept of rectifier

    in general in rectifiers how much output we get.for example if we apply a 24 V to a bridge rectifier how dc output will come from the bridge rectifier. for this how much value of capacitor we provide as a filter. Pls explain the concept of the rectifier[/QU Ideally, when you say...
  8. E

    what is the difference among the differential head set mic, mono mic and stereo mic..

    It is associated with the amplifier. Mono mics, positive/plus mark to the input of your amplifier (usually at +) and the other one negative/minus mark straight to the ground. For the differential mic negative/minus mark is connected to the minus mark of your amplifier. For Stereo type its either...
  9. E

    landline telephone voltage

    Operating voltage usually refers to off-hook voltage. Also depends on your telephone circuits but it works at around 6.5V to 12V. :-)
  10. E

    What Telephone Chip to Use???

    Hi, by now Im using AS2540 as my telephone IC. Reference circuit is also provided in its datasheet. My problem now, how I can make the piezo produce louder sound as my ringer. Kindly help me how to fix this. Any suggestion will be appreciated. Thanks!
  11. E

    What Telephone Chip to Use???

    Hey guys, 'telephone chip' for landline or telephone itself. I want to interface a telephone into the computer serially. (TX, RX and GND only).
  12. E

    What Telephone Chip to Use???

    Hi guys, Im looking for a telephone chip that can be directly interface to the CPU via serial interface (TX,RX,GND). Much appreciated if you can also refer some schematic for this. thanks in advance.

Part and Inventory Search

Back
Top