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'[EE]: need circuit for generating 60Hz sine wave'
2005\12\17@021138 by John Waters

picon face
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


2005\12\17@034826 by Steve Smith

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face
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-bouncesTakeThisOuTspammit.edu [.....piclist-bouncesKILLspamspam@spam@mit.edu] On Behalf Of
John Waters
Sent: 17 December 2005 07:12
To: piclistspamKILLspammit.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


2005\12\17@035711 by Jose Da Silva

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face
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 ;-)

2005\12\17@113626 by olin piclist

face picon face
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

2005\12\17@140407 by Djula Djarmati

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face
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)

2005\12\17@183702 by Andre Abelian

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face
Djula,

what about using AC110 ? use small transformer to bring the voltage down

Andre Abelian





Djula Djarmati wrote:

{Quote hidden}

2005\12\17@185422 by olin piclist

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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

2005\12\17@202032 by Cristóvão Dalla Costa

picon face
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_watersKILLspamspam.....hotmail.com> wrote:
{Quote hidden}

>

2005\12\17@215020 by olin piclist

face picon face
"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

2005\12\17@220220 by Mark Rages

face picon face
On 12/17/05, John Waters <EraseMEjohn_fm_watersspam_OUTspamTakeThisOuThotmail.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
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