Searching \ for 'need circuit for generating 60Hz sine wave' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/method/math.htm?key=sine
Search entire site for: 'need circuit for generating 60Hz sine wave'.

Truncated match.
PICList Thread
'need circuit for generating 60Hz sine wave'
2005\12\17@032306 by Jinx

face picon face
> Could any one suggest me a circuit that will generate sine wave?
> There are 3 features required:-

nuh-uh, 4. What power level ? Just signal ?

2005\12\17@073448 by Russell McMahon

face
flavicon
face
> 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)

C'mon John - you can do better than that!
Monsters (or fair facsimiles thereof) lurk in the PIClist shadows to
bite people who ask questions like that :-).
(" ... newbies ... my valuable time ... Google ... my valuable time
... dead fish ... why should I ... my val.... fish ... ! ...")

As others have already said - more information is needed for a good
reply.
Stability, power level, available voltages / power source, why sine
wave, how good a purity is required, and much more ... ?

The better the description the quicker a *good* answer can be
provided.
Is it for volume production?
If not, why is cost so critical. If so, the key parameters may be
more important.

Starters:

Wien bridge oscillator (Google is your friend) can produce excellent
stability and purity sine waves at lowish cost.

Bit bashed filtered PWM from the cheapest processor you can find may
suffice. And may not.

A one transistor oscillator with an LC tank may suffice.

A 2 or 3 gate square/triangleish wave oscillator with a diode-shaper /
"diode function generator" (Google is you ...) may suffice.
This conversation is liable to be educational if not immediately
applicable -
   http://66.102.7.104/search?q=cache:d4qmz3GECRwJ:http://www.browser.pavsta.com/browser/nph-proxy.pl/101111A/http/groups-beta.google.com/group/sci.electronics.design/browse_thread/thread/636c91089b176201/0fee555e92291e0a%3Flnk%3Dst%26q%3D%252Bsymmetry%2B%252Bsquare%26rnum%3D8%26hl%3Den+%22diode+shaper%22+%22sine+wave%22&hl=en

A NE555 (may the Lord have mercy ...) with a diode shaper may suffice.

...

More data!


       Russell McMahon
       (All answers are wrong. Some answers are useful).




2005\12\17@100950 by Vasile Surducan

face picon face
On 12/17/05, Russell McMahon <spam_OUTapptechTakeThisOuTspamparadise.net.nz> 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)

>        (All answers are wrong. Some answers are useful).

One wrong answer:

1. using a square wave generator followed by a fifth order LPF -
ughhh, ugly methode
2. using a FET or bulb  stabilised Wien bridge oscillator
3. variation of the 1), using a second order filtered PWM
4. using a cuadrature sinusoidal generator with OA
5. using an expensive DDS from Analog Devices
6. using the mains if you're in a 60Hz country
7. using a Ward Leonard engine-generator

cheers,
Vasile

2005\12\17@112909 by olin piclist

face picon face
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)

This can't be done as stated.  You also first have to understand what you're
talking about and how to specify what you want.  You clearly don't since #1
is just a subset of #2, #2 can't be met by any real system since there will
always be some harmonics (frequencies other than the intended), and #3 is
completely useless since there is nothing to measure the result against.


******************************************************************
Embed Inc, Littleton Massachusetts, (978) 742-9014.  #1 PIC
consultant in 2004 program year.  http://www.embedinc.com/products

More... (looser matching)
- Last day of these posts
- In 2005 , 2006 only
- Today
- New search...