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kang2008
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« on: September 19, 2009, 12:30:58 00:30 » |
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hi?
i need pulse multiplier schematic (2048pulse * 64 = 131072pulse) ?
who? help me?
thank you
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jestanoff
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« Reply #1 on: September 22, 2009, 04:25:40 16:25 » |
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What do you mean pulse multiplier. Perhaps each input pulse to generate a number of output pulses or anything else. Could you add more explanation and what it will be used. With the numbers that you wrote it seems to me it was a memory.
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oldvan
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« Reply #2 on: September 22, 2009, 05:25:15 17:25 » |
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Phase Locked Loop perhaps?
Routinely done for RF circuits.
What frequency are these pulses arriving at?
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Give a man a fish and you feed him for a day.
Teach a man to fish and he will sit around in a boat drinking beer all day.
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kang2008
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« Reply #3 on: September 23, 2009, 09:39:39 09:39 » |
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use ac motor driver(pluse)
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jestanoff
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« Reply #4 on: September 23, 2009, 04:47:26 16:47 » |
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Nobody guess. This project is like one equation with five unknown.
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Ichan
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« Reply #5 on: September 26, 2009, 04:25:49 16:25 » |
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If the input frequency is not too high, not in MHz range, then you can use a microcontroller to do that.
1. Measure the periode T between two input pulse.
2. Output n number of pulses with T/n periode. (n = 64 for your case).
3. Back to 1
This approach will lag 1 pulse stream, but with PLL there will be more pulse lag before the system locked.
-ichan
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wedo
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« Reply #6 on: September 26, 2009, 06:37:52 18:37 » |
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There are two methods to achieve multiplier circuit:
1- Get the pulses using MCU counter pin and multiply the count number by 64.
2- Use multiplier IC like: AD534, AD632, etc…
By the way, are you looking for analog or digital multiplier?
Give us more details so that we can help you.
You are welcome.
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samir
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« Reply #7 on: September 27, 2009, 03:54:05 15:54 » |
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hi?
i need pulse multiplier schematic (2048pulse * 64 = 131072pulse) ?
who? help me?
thank you
as oldvan said,it is called as phase locked loop  http://www.national.com/ds/LM/LM565.pdfas far as i know it is the only thing that can have output freq in multiple of input.only thing you may be concern about pll response time and have to tune it according. |
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samud
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« Reply #8 on: October 01, 2009, 04:44:00 04:44 » |
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do u have any other circuit for this
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SONSiVRi
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« Reply #9 on: October 01, 2009, 07:51:08 07:51 » |
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User is gone, he can't answer your questions. Because we told him to follow the rules, he doesn't followed on purpose again and again.
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pickit2
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There is no evidence that I muted SoNsIvRi
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« Reply #10 on: October 02, 2009, 10:23:24 10:23 » |
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Topic will be locked
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Note: I stoped Muteing bad members OK I now put thier account in sleep mode
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