Your question has no meaning unless you post a schematic with it.
what frequency offset?
-
4th May 2012 08:05 PM #1samjesse
what frequency offset?
Hi
It is the difference between the source freq. and the reference freq.
What does this mean and why? is it good or bad?
Many thx
-
5th May 2012 03:23 AM #2audioguru
0Uncle $crooge
-
5th May 2012 03:31 AM #3ronsimpson
I am going to guess: that you are talking about a radio mixer or a PLL
In a mixer two frequencies are input (INA and INB). The output has both INA and INB and (INA-INB) and (INA+INB)0
-
5th May 2012 04:24 AM Thread Starter #4samjesse
I am just trying to get my head around CD4046 and googled for what it does and why. My objective is to learn as I am building my Arbitrary Function Generator using this http://www.sm0vpo.com:800/eprom/epromosc.htm
0
-
5th May 2012 04:36 AM #5ronsimpson
Thanks for the information.
In this case the CD4046 is a oscillator. The "freg" pot set the voltage on pin9. This in turn set the frequency.0
-
7th May 2012 05:19 PM Thread Starter #6samjesse
Thank you.
Can you give an example with schematic that would illustrate my original question?
On another note, I purchased a 4046 and have been reading the data sheet
http://www.farnell.com/datasheets/7557.pdf
and since I am going to use 12V battery as Vdd I am looking at Fig 16 in the last page "VCO frequency as a function of R1". What does the vertical axis represent? and is the frequency vs. Voltage at pin 9 linear? i.e.
as I increase Pin 9 from zero to 12v, VCO out pin #4 frequency increases linearly?0Last edited by samjesse; 7th May 2012 at 06:05 PM.
| Tags |
| Similar Threads | ||||
| Thread | Starter | Forum | Replies | Last Post |
| What frequency is used to test standardized inductor values? | codex653 | Electronic Projects Design/Ideas/Reviews | 12 | 23rd December 2010, 04:31 PM |
| how would you know at what frequency to operate your motor? | maruben | Robotics & Mechatronics | 7 | 14th August 2010, 06:09 PM |
| determining what frequency of crystal to use? | bigfarmerdave | Electronic Projects Design/Ideas/Reviews | 1 | 23rd January 2008, 12:44 AM |
| 18F452 Question: what frequency to run at? | Robot builder 101 | Microcontrollers | 8 | 30th July 2007, 04:17 PM |
| What frequency does PIC16F877 xtal operate??????? | rezurrekta | Electronic Projects Design/Ideas/Reviews | 2 | 23rd April 2005, 04:32 PM |