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sss 6th February 2004 03:43 PM

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?

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.


sss 6th February 2004 04:20 PM

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: ?

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

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


Originally posted by sss
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


sss 6th February 2004 04:40 PM

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

sss 6th February 2004 05:04 PM

thank u everybody !!!

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