Post by thread:[EE]: need circuit for generating 60Hz sine wave

Hi All, Could any one suggest me a circuit that will generate sine wave? There are 3 features required:- 1. I need sine wave. 2. I only need a fixed, single frequency, 60 Hz. 3. simple (thus low cost) Thanks in advance! John

Pic with pwm any a 4k7 resistor and a 10N capacitor. Couldn't be more simple. In the pic set up a table for the sine wave and PWM a pin. Use the R + C for integration and hey presto a sine wave......... (with about 2v dc offset on it) Rgds Steve -----Original Message----- From: spam_OUTpiclist-bouncesTakeThisOuTmit.edu [.....piclist-bouncesKILLspam@spam@mit.edu] On Behalf Of John Waters Sent: 17 December 2005 07:12 To: piclistKILLspammit.edu Subject: [EE]: need circuit for generating 60Hz sine wave Hi All, Could any one suggest me a circuit that will generate sine wave? There are 3 features required:- 1. I need sine wave. 2. I only need a fixed, single frequency, 60 Hz. 3. simple (thus low cost) Thanks in advance! John

On December 16, 2005 11:11 pm, John Waters wrote: > Could any one suggest me a circuit that will generate sine wave? > There are 3 features required:- > 1. I need sine wave. > 2. I only need a fixed, single frequency, 60 Hz. > 3. simple (thus low cost) Get a 120VAC wallwart transformer. ;-) If that wasn't what you wanted, perhaps better explanation required ;-)

Jose Da Silva wrote: > On December 16, 2005 11:11 pm, John Waters wrote: >> Could any one suggest me a circuit that will generate sine wave? >> There are 3 features required:- >> 1. I need sine wave. >> 2. I only need a fixed, single frequency, 60 Hz. >> 3. simple (thus low cost) > > Get a 120VAC wallwart transformer. ;-) > > If that wasn't what you wanted, perhaps better explanation required Actually he doesn't even need the wall wart according to that spec since he didn't specify the voltage nor isolation. The only gotcha is that the power line will have some harmonics. ****************************************************************** Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC consultant in 2004 program year. http://www.embedinc.com/products

part 1 443 bytes content-type:text/plain; (decoded 7bit) >Could any one suggest me a circuit that will generate sine wave? There >are 3 features required:- >1. I need sine wave. >2. I only need a fixed, single frequency, 60 Hz. >3. simple (thus low cost) I'm using this circuit for 74.4Hz, the period precision is 1us and it outputs a very clean sine wave. Outputs are updated each 24us. You can calculate driving waveforms in Excel. Djula part 2 4652 bytes content-type:image/gif; (decode) part 3 35 bytes content-type:text/plain; charset="us-ascii" (decoded 7bit)

Djula, what about using AC110 ? use small transformer to bring the voltage down Andre Abelian Djula Djarmati wrote: {Quote hidden}>>Could any one suggest me a circuit that will generate sine wave? There >>are 3 features required:- >>1. I need sine wave. >>2. I only need a fixed, single frequency, 60 Hz. >>3. simple (thus low cost) >> >> > > I'm using this circuit for 74.4Hz, the period precision is 1us and >it outputs a very clean sine wave. Outputs are updated each 24us. You >can calculate driving waveforms in Excel. > >Djula > > > > > > > ------------------------------------------------------------------------ >

Andre Abelian wrote: >>> Could any one suggest me a circuit that will generate sine wave? >>> There are 3 features required:- >>> 1. I need sine wave. >>> 2. I only need a fixed, single frequency, 60 Hz. >>> 3. simple (thus low cost) > > what about using AC110 ? use small transformer to bring the voltage > down Down to what? He didn't specify any voltage, so line voltage is well within spec. If it weren't for the impossible to have zero harmonics, all this guy needs is a line cord with the ends stripped. ****************************************************************** Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC consultant in 2004 program year. http://www.embedinc.com/products

I'm using the circuit from here: http://www.edn.com/article/CA238420.html?spacedesc=designideas I use it to generate a 1khz sine wave to excite a humidity sensor. It generates a perfect sine wave and it's the best circuit that I've found (of many that were tricky to get working) On 12/17/05, John Waters <.....john_fm_watersKILLspam.....hotmail.com> wrote: {Quote hidden}> > Hi All, > > Could any one suggest me a circuit that will generate sine wave? There are > 3 > features required:- > 1. I need sine wave. > 2. I only need a fixed, single frequency, 60 Hz. > 3. simple (thus low cost) > > Thanks in advance! > > John > > >

"Cristóvão Dalla Costa" wrote: > It generates a perfect sine wave This is clearly nonsense, and just as bad as the original poster's "spec". Besides, how would you know unless you've got a perfect spectrum analyzer? If you've got one of those, I've got this bridge in New York I'll give you an exclusive opportunity to invest in. ****************************************************************** Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC consultant in 2004 program year. http://www.embedinc.com/product

On 12/17/05, John Waters <EraseMEjohn_fm_watersspam_OUTTakeThisOuThotmail.com> wrote: > Hi All, > > Could any one suggest me a circuit that will generate sine wave? There are 3 > features required:- > 1. I need sine wave. > 2. I only need a fixed, single frequency, 60 Hz. > 3. simple (thus low cost) > Touch the circuit with your index finger. Works in my lab. Regards, Mark markrages@gmail -- You think that it is a secret, but it never has been one. - fortune cookie