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Recent content by chanduchi

  1. C

    Suggest any audio IC that converts frequency to audio

    Hi Aim generating the frequency 0-1.5KHZ from 89C51 micro controller. Now I want convert this frequency to audio. Aim using 8 ohms speaker. Can you suggest any audio IC that converts frequency to audio? Thanks Regards chandu
  2. C

    How to convert the voltage into pulses using 89c51 micro?

    Re: volume control Hi My doubt is how to generate the variable frequency with constant amplitude using 89C51. The variable frequency is depends on analog input voltage. So aim planning to take digital value corresponding to the analog input voltage and place the digital value in the TIMER...
  3. C

    How to select external interrupt pin in a program?

    Re: External Use EX0 and EX1 bits in IE register. EX0=1 ;external interrupt 0 EX1=1 ;external interrupt 1 Regards
  4. C

    How to convert the voltage into pulses using 89c51 micro?

    Re: volume control Thanks for the reply Here I am comparing the external signal with set point value. Set point value is variable. It well changes to user to user. According to the set point value I want generate the PULSES and give to any musical IC, which generates the sound. My problem...
  5. C

    Looking for sites about analog design

    design Hi iam interested to learn analog designing . Can provide any sites related to analog design. ragards chandu
  6. C

    How to convert the voltage into pulses using 89c51 micro?

    volume control by 89c51 chinese Hi How to convert the voltage into pulses (frequency) using 89c51 micro controller? Aim using AD571 ADC and converting analog voltage in to digital and feeding to microcontroller. For microcontroller I connected a Buzzer. Depending on input voltage its volume...
  7. C

    Suggest me some 10-bit ADC ICs.

    Re: 10-bit Hi Presently aim using AD571 ADC. It have fallowing futures. Complete A/D Converter with Reference and Clock Fast Successive Approximation Conversion: 40 ms max No Missing Codes Over Temperature 08C to +708C: AD571K –558C to +1258C: AD571S Digital Multiplexing: Three-State Outputs...
  8. C

    Suggest me some 10-bit ADC ICs.

    Re: 10-bit Thanks for your reply. I want 0 to 10v analog input range ADC. PIC and AVR have 0-to 5-v range. Regards chandu
  9. C

    Looking for information about variable set point controller

    Set point Hi Now I want design a variable set point (set point for input voltage) controller. Can you give information about variable set point controller. Thank you Regards Nari
  10. C

    Problem with program for displaying analog voltage on 7 segment display

    Hi friends Here iam displaying the Voltage on 7 segment display In this program iam facing diaplay probalm It is flickering and not showing the correct values on the display Please solve this problam Regards naresh /* Program for display analog voltage On 7 segment display */...
  11. C

    Problem with C code for ADC804 and 7 segment display as display is flickering

    Re: code Thanks for your reply Iam using 11.0592MHz clock Regards Nari
  12. C

    Problem with C code for ADC804 and 7 segment display as display is flickering

    Hi Iam facing displays flickering problem since last 20 days. Iam using delay but I am not able to salve it Here iam using 74LS373(4) latches. Iam sending the data through PORT 2 and enable the latches using PORT 3 Iam using ADC804+89c51+74LS373(4 numbers) +7 seven segment displays...
  13. C

    Suggest me some 10-bit ADC ICs.

    Re: 10bit Thanks for reply What are the popular 10 bit converts with 0 to 10v input range . Regards chandu
  14. C

    Suggest me some 10-bit ADC ICs.

    10-bit hi Suggest some 10-bit ADC ICs. Which well take 0 to 10v range input signal. Regards Nari
  15. C

    Suggest me some 10-bit ADC ICs.

    10bit hi Suggest some 10-bit ADC ICs. Which well take 0 to 10v range input signal. Regards Nari
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