Signal Generator: Frequency Calculation Help Needed

[PainterGuy]

hello fine people,

some days back saw a signal generator. it has buttons labelled as 1hz, 10hhz,1k,2k,5k,etc. it does not has its own display. you can connect it to some external device for display. me do not have access to it now. it had a dial which could be turn with markings 0.5,2.5,0.1, etc. me asked one person for what dial is used. he said if you want signal of say 500hz. then you press 1k button and then set the dial to 0.5 which would give you 500hz (1000x0.5). is he saying correct?
suppose if connect a led to that signal generator and set its value at 10hz, will led turn on/off 10 times in a sec. your help is need. would appreciate any help.

cheers

 

[Drakkith]

Hrmm. I don't know anything about this, but I just wanted to say that if you don't get any answers here, you should try posting this in the Electrical Engineering forum. Maybe someone there can help you.

 

[PainterGuy]

hello,

can someone please move this thread to electrical engineering section. it would be help.

 

[pizzaguy]

then you press 1k button and then set the dial to 0.5 which would give you 500hz (1000x0.5). is he saying correct?

That's how mine works.

suppose if connect a led to that signal generator and set its value at 10hz, will led turn on/off 10 times in a sec. your help is need. would appreciate any help.

cheers

Even 10 hertz is pretty fast, you'll likely see it as a flickering of the LED. But I'm not sure the generator will have enough output to drive the LED.

 

[PainterGuy]

That's how mine works.



Even 10 hertz is pretty fast, you'll likely see it as a flickering of the LED. But I'm not sure the generator will have enough output to drive the LED.

pizzaguy, you are so good. then that person was correct. led take very little current, my guess, so think it can work. do you think like that?

cheers

 

[pizzaguy]

My generator here is simply a SIGNAL generator, that is, it is capable of generating a SIGNAL, not any real POWER. Even an LED is too much of a load for my generator (yea, I tried it and my generator cannot provide enough current).

But that does not mean that yours will not do it, maybe it will, you can try it.

 

[PainterGuy]

hello again,

i was able to a snap of that frequency generator:--
http://img21.imageshack.us/img21/4708/freqgenerator.jpg

at top it says 0.2hz-2mhz. one mark on dial marks 0.05 (0.05x4=0.2). on dial this has markings right side also (in clockwise direction). there are 8 markings (starting from 0) on right side of 0.2, does this mean every marking stand for 0.025?

as pizzaguy told me that value on dial is multiplies with set frequency. if frequency set is 1khz and i have 0.5 on dial, then resulting frequency will be 500hz. is this correct? but as you see there are markings smaller than 0.2, so it is possible to get frequency smaller than 0.2hz (1hz x (any value on dial smaller than 0.2). that mean frequency generator can produce frequencies lower than 0.2hz, then why it say at top that it can produce frequencies from 0.2hz-2mhz. please tell me.

what is function of "Pulse Out" and "VCF"?

what is function of "DC OFFSET" and "SYMMETRY"?

what is function of "20dB" and "INV"?

i am much grateful if you provide me help.

cheers