need some help...

Thread Starter

mtnokh

Joined Sep 11, 2008
10
hey guys how r u all doing? I have a project which asking for building a function generator that has to run for 4 different frequencies....I don't know to to start that....if u guys can give me some steps to begin with I would be really thankful......

mtnokh
 

Wendy

Joined Mar 24, 2008
21,840
You'll need to provide a bit more input. 4 frequencies at once? What kind of waveforms, and signal amplitude?
 

Thread Starter

mtnokh

Joined Sep 11, 2008
10
well it has to run 1,2,4,10 Hz and three kinds of wave (rectangular,square) i really need some help guys....thanks
 

beenthere

Joined Apr 20, 2004
15,808
Once again - do the frequencies have to come out all at the same time?

What are the three waveforms? Possibly square, triangle and sine?

Any other requirements? Is this a class assignment?
 

Gustav180

Joined Aug 25, 2009
17
Hello,
You can do it easy, look at the chip XR2206. This is a complete function generator chip.

You can do it cheap. Use one CMOS hex inverter as CD4069 and around this you can design a sinewave generator and then square the sinwave and then integrate the squarewave to a triangular wave. All with the same chip.

You can do it complex, use a PIC-processor and generate the waveforms through a DAC.

Best regards
Gustav
 
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