square wave gen needed

sss · 6th February 2004, 03:43 PM

hello everybody
i need to generate a square wave between 20hz-10khz
does someone know any simple ic based square wave gen i can use?

zobsky · 6th February 2004, 03:52 PM

google on function generators / function generator kits

good luck

GUILHERME · 6th February 2004, 04:09 PM

Don't know if its the type of animal you're looking for, but the max038 from maxim has the range/waveform you're asking and is easly available from RS.

Guilherme.

sss · 6th February 2004, 04:20 PM

hi
thats much much more then i need

i need something simple with one pot to controll the freq

zobsky · 6th February 2004, 04:32 PM

something like this: http://www.hobbytron.net/functionsub.html ?

i think there are a bunch of $5 cheap ICs (which these kits are based on) which do exactly what you want

can't find a link but a web search should reveal more eg http://www.mitedu.freeserve.co.uk/Ci...ar/funcgen.htm

cabbagerat · 6th February 2004, 04:37 PM

A 555 will do the job for you up to 10kHz, IIRC (been a while). 555 and 556 are dirt cheap, common and easy to wire to put out a square wave. Whether it will be clan enough fr what yu want to use it fr is another question, however.

GUILHERME · 6th February 2004, 04:38 PM

Quote:

Originally posted by sss
hi
thats much much more then i need
i need something simple with one pot to controll the freq

A 555 wired for astable operation will do that. You havent said yet what you want it for, so now its probably too short

Guilherme.

sss · 6th February 2004, 04:40 PM

hi guyz
555 will be fine , i just dont know how to use it

i need 50% duty cycle and freq controlled with one pot , is it possible to do that with 555?

GUILHERME · 6th February 2004, 04:48 PM

look here on how to use it:

http://www.fairchildsemi.com/ds/NE/NE555.pdf

sss · 6th February 2004, 05:04 PM

thank u everybody !!!

6th February 2004, 03:43 PM	#1
sss diyAudio Member Join Date: Jul 2003 Location: Israel , haifa	square wave gen needed hello everybody i need to generate a square wave between 20hz-10khz does someone know any simple ic based square wave gen i can use?

6th February 2004, 03:52 PM	#2
zobsky diyAudio Member Join Date: Mar 2002 Location: Dallas, Tx, USA	google on function generators / function generator kits good luck __________________ "Any fool can know. The point is to understand" - Albert Einstein

6th February 2004, 04:32 PM	#5
zobsky diyAudio Member Join Date: Mar 2002 Location: Dallas, Tx, USA	something like this: http://www.hobbytron.net/functionsub.html ? i think there are a bunch of $5 cheap ICs (which these kits are based on) which do exactly what you want can't find a link but a web search should reveal more eg http://www.mitedu.freeserve.co.uk/Ci...ar/funcgen.htm __________________ "Any fool can know. The point is to understand" - Albert Einstein

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6th February 2004, 04:09 PM	#3
GUILHERME diyAudio Member Join Date: Oct 2002 Location: PORTUGAL	Don't know if its the type of animal you're looking for, but the max038 from maxim has the range/waveform you're asking and is easly available from RS. Guilherme.

6th February 2004, 04:20 PM	#4
sss diyAudio Member Join Date: Jul 2003 Location: Israel , haifa	hi thats much much more then i need i need something simple with one pot to controll the freq

6th February 2004, 04:37 PM	#6
cabbagerat diyAudio Member Join Date: Jan 2004 Location: Cape Town	A 555 will do the job for you up to 10kHz, IIRC (been a while). 555 and 556 are dirt cheap, common and easy to wire to put out a square wave. Whether it will be clan enough fr what yu want to use it fr is another question, however.

6th February 2004, 04:40 PM	#8
sss diyAudio Member Join Date: Jul 2003 Location: Israel , haifa	hi guyz 555 will be fine , i just dont know how to use it i need 50% duty cycle and freq controlled with one pot , is it possible to do that with 555?

6th February 2004, 04:48 PM	#9
GUILHERME diyAudio Member Join Date: Oct 2002 Location: PORTUGAL	look here on how to use it: http://www.fairchildsemi.com/ds/NE/NE555.pdf

6th February 2004, 05:04 PM	#10
sss diyAudio Member Join Date: Jul 2003 Location: Israel , haifa	thank u everybody !!!

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