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Type: Posts; User: klug

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  1. Replies
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    Closed: Reliable supplier of components from China

    There is reliable supplier of electronic components from China:

    http://hknovatech.com.cn/

    I want to recommend this company. We bought components from them, and have very good experience: they...
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    Closed: Re: photo diode sensitivity for the eyeblink sensor

    Longjasp,

    you need a filter. These filters are wildely used in photography. It is a special glass.
    Place it in front of your receiving diode. Then rotate this filter to achive maximal...
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    Closed: Re: photo diode sensitivity for the eyeblink sensor

    UPDATE: As root post was changed after incorrect topics merging, I add the original question:



    Try to use polarizing filters on both LD. Adjust angle of polarization on one of them to receive...
  4. Closed: Re: 28C256 EEPROM Problem, Data automatically corrupt

    No, you can not add software write protection simply by changing hex file. Read datasheet for this chip. You will find write sequence to enable protection.
    ...
  5. Closed: Re: 28C256 EEPROM Problem, Data automatically corrupt

    Read datasheet for your EEPROM. It has additional software write protection:



    I can guess that you have not enabled the software protection in new chip, but old original chip was written with...
  6. [SOLVED]Closed: Re: One PIC, a lot of LEDs to Pulse Width Modulate...

    Shift registers are the output stage of BAM there. You are loading the state of every LED in interrupt by these shift registers. So, you can independently controll brightness of every LED.

    For...
  7. [SOLVED]Closed: Re: One PIC, a lot of LEDs to Pulse Width Modulate...

    You can compare BAM & PWM on this picture:
    http://bsvi.ru/uploads/BAM--_14CBA/image.png

    Principle of BAM is very simple:

    Bit - Weight
    0 - 1
    1 - 2
    2 - 4
    3 - 8
  8. [SOLVED]Closed: Re: One PIC, a lot of LEDs to Pulse Width Modulate...

    Try BAM (Binary Angle Modulation) instead of PWM.
    Batsocks - LED dimming using Binary Code Modulation - Binary Code Modulation

    It is most effective way to control brightness of LED's.

    You...
  9. Closed: Re: Cheap power amplifier 2x750W based on discrete elements

    It was repost from Elektroda forum.

    Ko
    wzmacniacz 2x550W RMS/4R z zabezpieczeniami ,,po tanio

    The original post has lack of circuit diagram too, as author wants to make commercial production...
  10. Closed: Re: HOW TO CREATE exact 1ms delay using High tech C (HTC) compiler?(PIC16F84A,4MHz)

    vinodstanur,

    you can find "readme.txt" file there. It has an explanation.

    Also, you will find "main.c" file. It is an example program that using these routines.
  11. Closed: Re: HOW TO CREATE exact 1ms delay using High tech C (HTC) compiler?(PIC16F84A,4MHz)

    Try to use routines available on the microchip site. They are made for HIGH TECH C compiler.

    http://www.microchipc.com/sourcecode/PIC_Hi-Tech_C_delay_and_timeout_routines_for_PIC16xxxx_v7-1.zip
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    Closed: Re: How to test a written c code??

    There is MIRSA C standart, created to avoid possible errors in C code, that consists of 126 rules.

    http://en.wikipedia.org/wiki/MISRA_C

    Some programmer's tools are making check for MISRA C...
  13. Closed: Re: Lab testing of SMPS ?

    User "gauravbishnoi" has wrongly made his reply as report.

    It is here
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    Closed: Re: ZIGBEE AND MICROCONTROLLERS

    There was a reply from user "shree4u" posted wrongly in report system.
  15. Closed: sampling process

    Posted by Anonymous (it was posted wrongly in report system):
  16. Replies
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    Closed: Power supply

    User Engr.KamranHameed wrongly posted reply to report system:
  17. Closed: Drain diffusion area is area of the drain diode?

    user raptor1981 wrongly posted reply to report system:

    hi, AD is the drain area of MOSFET . AD is not related with the diode area . This can be observed from the model file of AMS , here there are...
  18. Closed: Re: Dr.Quantum [You got to see these videos any how!!!]

    I think they are amazing. Especially second one. There are real mix of physics and mystics.
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    Closed: Re: hello,all

    That is SCAM site. They will get your money for nothing.
    Few feedbacks on the web:

    http://www.hobotraveler.com/da_sc_chinascams.php
    http://www.fraudwatchers.org/forums/showthread.php?p=51840
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    Closed: Re: Sincronize pcb and circuit

    There is an term - Engineering Change Orders (ECO). That was made especially for your situation.

    For example, you have sinchronized pcb and sch. Then you need to change sch. In this case you need...
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    Sticky: Read this before posting

    Do not post e-books or requests for e-books or ieee papers here.
    Users who are requesting or uploading books here will be Warned and Banned.
    Confirn the thread is started in the right category it...
  22. Closed: Re: how can i change dialog box color by clicking button

    There was a message from alishirazi63 wrongly posted in report system.
  23. Closed: Re: Please help. Need hearing device for my children.

    I do not know how to change pitch, but writting, delaying and reading is quite simple by microcontroller.

    For example this circuit:
    http://www.atmel.com/dyn/resources/prod_documents/doc1456.pdf...
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    Closed: Re: An intersting puzzle

    I know that. :)





    In (2) S says that he knew (1) before P said (1).

    So, there can not be the sum of two prime numbers.
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    Closed: Re: Urgent help with VHDL codes

    There was an reply by "Engr.Kamran Hameed" posted wrongly in report system. I copy it here (format it yourself).
    ----------------------------------------------

    I am sending you UART verilog code...
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