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Sajeel Saeed
Member

Join Date: Apr 2008
Posts: 6

How to improve power of a sinusoidal wave???????

04/15/2008 11:28 AM

Dear fellows! I want to design an inverter(from DC to AC). I have done this by using 555 timer. The problem is this I get only a few miliamperes of current. How I can improve Wattage of this inverter? Rply as early as possible plz!!!!!1
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DaveR
Commentator

Join Date: Apr 2008
Location: Rhode Island, USA
Posts: 56
Good Answers: 5
#1

Re: How to improve power of a sinusoidal wave???????

04/15/2008 11:49 AM

How much output power are you looking for? What is the load?
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Electroman
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United Kingdom - Member - Olde Member!! Engineering Fields - Instrumentation Engineering - New Member

Join Date: Jul 2006
Location: Dunstable, England
Posts: 2821
Good Answers: 45
#2
In reply to #1

Re: How to improve power of a sinusoidal wave???????

04/15/2008 1:55 PM

"....Reply as early as possible plz!!!!"

So you reply within 12 minutes and nothing is heard from the OP for over 3 hours.... I don't think it was that urgent afterall...??

John.

__________________
 A little knowledge is a dangerous thing - Googling is far worse!
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Sajeel Saeed
Member

Join Date: Apr 2008
Posts: 6
#7
In reply to #1

Re: How to improve power of a sinusoidal wave???????

04/20/2008 8:44 PM

I want to design an inverter of 100 watts.
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Anonymous Poster
#3

Re: How to improve power of a sinusoidal wave???????

04/15/2008 11:35 PM

saeed; how do you get a sine wave from a 555 timer chip?
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Anonymous Poster
#4

Re: How to improve power of a sinusoidal wave???????

04/16/2008 7:56 AM

I am assuming the sine wave is simulated by varying the duty cycle of a higher frequency square wave. To increase the current and/or voltage you can run the output from the 555 into an amplifier. No one can suggest a good amplifier for your purpose without knowing; the switching frequency, the sine wave frequency, the input amplitude, the output amplitude, the desired output voltage and the desired output current.

You may want to condition the switched signal before boosting it with an active filter made from op-amps, that will help minimize the unwanted harmonics.
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Anonymous Poster
#5

Re: How to improve power of a sinusoidal wave???????

04/18/2008 3:40 AM

how do you get a sine wave from a 555 timer chip?
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Anonymous Poster
#6
In reply to #5

Re: How to improve power of a sinusoidal wave???????

04/20/2008 8:39 PM

I used 741 chip to get sine wave. 555 timer just gave a square wave.
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Anonymous Poster (4); DaveR (1); Electroman (1); Sajeel Saeed (1)

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