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Joe Gold
01/31/09 20:50
  01/31/09 21:00

Read: 696 times

#161888 - Yes, but
Responding to: Jerson Fernandes's previous message
Jerson Fernandes said:
Fout = (Fin * 3391)/981

Your multiplier method may be inaccurate for the OP requirements. Hence - this is why I asked for clarification of the requirements before offering suggestions.

The OP said - It possible using MCU or Some other technique like VLSI?

But the OP hasn't advised the waveform of the signal.... If the waveform is a sinewave - some form of ADC-DAC is required to use a MCU (ie convert from analog to digital, do the digital maths to multiply and then convert back to analog).

Another possibility is to use a DDS peripheral onboad a MCU... Analog Devices have some 80c51's and ARM7's MCU with DDS onboard (direct digital Synth).

But there many other possibilities until the requirements are narrowed down.


List of 23 messages in thread
Frequency Multiplication      Satish S Munot      01/31/09 02:01      
   what is the wave form shape of the original signal?      Joe Gold      01/31/09 05:34      
   Yes, PLL is the most promising solution      Richard Erlacher      01/31/09 09:08      
   Easy integer approximation      Jerson Fernandes      01/31/09 19:02      
      Yes, but      Joe Gold      01/31/09 20:50      
         Wave Shape      Satish S Munot      02/01/09 20:25      
            Constant speed?      Per Westermark      02/01/09 22:49      
            Constant speed?      Per Westermark      02/01/09 22:50      
            Constant speed?      Per Westermark      02/01/09 22:51      
            Constant speed?      Per Westermark      02/01/09 22:51      
            Still some outstanding questions      Joe Gold      02/02/09 06:12      
            Perhaps you're looking at the wrong motor      Richard Erlacher      02/02/09 07:35      
   Rate Multiplier      Aubrey Kagan      02/02/09 13:17      
      That might work ... but ...      Richard Erlacher      02/02/09 13:26      
         Frequency multiplier      Satish S Munot      02/02/09 21:11      
            How about some numbers?      Richard Erlacher      02/02/09 21:39      
               Frequency Multiplier      Satish S Munot      02/03/09 01:21      
                  I was afraid that was the case ...      Richard Erlacher      02/03/09 08:56      
                     Frequency Multipllication      Satish S Munot      02/03/09 20:46      
                        What about that logic card?      Richard Erlacher      02/03/09 22:19      
                           Frequency Multipiler      Satish S Munot      02/03/09 22:24      
                              Why no further relevant information?      Richard Erlacher      02/03/09 22:28      
                                 I have been following this      Erik Malund      02/04/09 05:55      

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