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Recent content by asimkumar

  1. A

    Unknown Component , expect to be a LDO but no matching connections

    thanks a lot, the pinout is exact same, guess this is the component
  2. A

    Unknown Component , expect to be a LDO but no matching connections

    i have a soil moisture logger which is damaged and the the company closed so i have to repair myself, On the board there is a small SOT23 device with 5 terminals 3 terminals connected, marking on it is "C3EB", i guess it is a LDO but the pinouts are not matching with any LDOs as LDO terminal 2...
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    Using code space(flash memory) in AVR

    EEPROM is easy but internal EEPROM space available is very less comparable to internal flash - - - Updated - - - EEPROM is easy but internal EEPROM space available is very less comparable to internal flash
  4. A

    Using code space(flash memory) in AVR

    Can i use the flash memory of a AVR microcontroller for data logging(temperature, time data), atmel published two application notes regarding this but these are not easy, i cant get the page size and how to code in C for using internal flash, where the data will be stored and can be accessed...
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    [SOLVED] Is this transistor working as a amplifier or anything else

    Hello friends, thank u for response, i got it from google with hints from u all, that was a Device invented by Bernard D.H. Tellegen . this is the same man who invented Tellegen theorem Thank u All ASIM
  6. A

    [SOLVED] Is this transistor working as a amplifier or anything else

    Hi all i have found this circuit in a photo diode amplifier, but i cant understand whether it is a amplifier or a current limiter/source. The photo diode acts as the signal source, and output taken to a op amp.
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    Is the CP2021 is a CDC-ACM device or not

    i am trying to connect CP2021 device to a VNC2(viniculum-II from FTDI) in host mode, i am new to USB, i want to know what are necessary parameters of the device which the host should be aware of should aware of , as i have seen there are lot of descriptor. They have provided two related...
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    why transistors in preamp

    Yes u guessed right am trying to reverse engineer, u can see some equivalent circuits **broken link removed** **broken link removed**
  9. A

    why transistors in preamp

    i have seen most of the rotating laser receivers(used for grading or leveling) use transistors in preamp section. why do they choose transistors instead of opamp. i don't think they bother about cost and input bias current is not important because there are some op amps with pico amp bias...
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    Behavior of damaged electronic components

    i want a detail literature about how the electronic components behave when they are damaged. i have seen capacitors and diode some times they are open circuit and some times short circuited. How it affects if its burn by high voltage and how if its by static charge. Any one please answer how...
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    Damaged Electronic components

    i have seen one datasheet (section:humidity sensitivity and soldering)of a opamp suggested to heat the ic at about 80 deg C before soldering. **broken link removed**
  12. A

    High Speed Laser Receiver

    Thanks Keith for response i have seen these in some patents , where they have used photodiodes with zero bias. www.google.com/patents/US6750953 www.google.com/patents/US5886776
  13. A

    High Speed Laser Receiver

    i am designing a laser receiver for detecting a rotating laser( less than 1us pulse at 600meter), now am using reverse biased photo diodes as it gives highest speed due to low capacitance, but why most of the good companies in this field uses photo diode without any biasing?
  14. A

    [SOLVED] goto specific line after interrupt routine is over

    Great, my problem solved Thank you
  15. A

    [SOLVED] goto specific line after interrupt routine is over

    then i have to check for the flag inside for second interrupts and one outside for the case when there is no previous interrupt. Is it OK ?
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