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Author Topic: Frequency synthesizer with AT89C52 and LC72131  (Read 6281 times)
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user112
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« on: November 06, 2007, 09:19:33 21:19 »

Proteus project +asm
Frequency synthesizer with AT89C52 and LC72131 (PLL)  10-40MHz  steps 1MHz -100-50-25-10-5-1KHz
serial connection with PC
Software in Labview
autoincrement
TA 8176 used for VCO
real frequency of vco is 90-120MHz
 -80MHz(from quartz osc)=10-40MHz on LCD

made at school for final exam
if you have questions please ask

http://rapidshare.com/files/275211107/sinteza.rar

updated link
update is TA8176 not TDA
sorry for this
« Last Edit: September 06, 2009, 01:36:09 13:36 by user112 » Logged
mick
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« Reply #1 on: November 06, 2007, 11:45:44 23:45 »

Is there any     
Frequency synthesizer chip for 0-1000 Hz
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user112
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« Reply #2 on: November 07, 2007, 06:21:35 06:21 »

>I don't know but you can obtein this range mixing and filtering for example 4-5MHz from PLL to an osc with quartz of 4MHz rezult 0-1000Khz with step 1KHz and after dividing with 1000 you obtain 0-1000Hz with step of 1Hz in this way you have high stability

or you can try with http://pdf1.alldatasheet.com/datasheet-pdf/view/118258/ETC/NE565.html
« Last Edit: November 07, 2007, 06:48:08 06:48 by user112 » Logged
Tomandr
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« Reply #3 on: May 06, 2008, 11:35:22 11:35 »

I could not find the file sinteza.rar and download it, Can you give the correct link?
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tanveerriaz
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« Reply #4 on: May 15, 2008, 08:43:45 08:43 »

This file has been deleted.
Reason: No download for a longer period. Inactivity-timeout exceeded
pls upload hare
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user112
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« Reply #5 on: June 16, 2008, 01:30:17 13:30 »

i will upload again soon
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savnik20
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« Reply #6 on: November 18, 2008, 12:05:26 12:05 »

i will upload again soon
Can you upload again;
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nguyenthanhha
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« Reply #7 on: April 27, 2009, 09:46:51 09:46 »

link die, can you upload it?
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user112
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« Reply #8 on: September 03, 2009, 07:56:52 19:56 »

updated link
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mitsos
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« Reply #9 on: September 04, 2009, 04:48:52 16:48 »

hi

I upload the original file, bigger from that in the start of the thread.

http://rapidshare.com/files/275560654/Frequency_synthesizer.rar

regards
mitsos
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