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 Author Topic: pulse multiplier schematic?  (Read 2859 times) 0 Members and 1 Guest are viewing this topic.
kang2008
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 « on: September 18, 2009, 06:30:58 18:30 »

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, 10:25:40 10:25 »

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, 11:25:15 11:25 »

Phase Locked Loop perhaps?
Routinely done for RF circuits.

What frequency are these pulses arriving at?
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kang2008
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 « Reply #3 on: September 23, 2009, 03:39:39 03:39 »

use ac motor driver(pluse)
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jestanoff
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 « Reply #4 on: September 23, 2009, 10:47:26 10:47 »

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, 10:25:49 10:25 »

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, 12:37:52 12:37 »

There are two methods to achieve multiplier circuit:

1-   Get the pulses using MCU counter pin and multiply the count number by 64.

By the way, are you looking for analog or digital multiplier?

You are welcome.
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samir
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 « Reply #7 on: September 27, 2009, 09:54:05 09:54 »

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.pdf
as 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: September 30, 2009, 10:44:00 22:44 »

do u have any other circuit for this
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SONSiVRi
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 « Reply #9 on: October 01, 2009, 01:51:08 01:51 »

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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 « Reply #10 on: October 02, 2009, 04:23:24 04:23 »

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