JamesBourne
- Sep 26, 2010
- 6
- Joined
- Sep 26, 2010
- Messages
- 6
Hi everyone,
I am building a circuit that will produce a sine wave as output.
I am using a 555 timer (astable) to create a frequency of 140Hz. This produces a square wave with an amplitude of about +5V.
Note that voltage is 0V and +5V (not -5V and +5V).
My problem is that I do not know how to turn the square wave into a sine wave.
I have read on various sites that you can use capacitors and inductors to filter
the signal to produce a sine wave, but calculations and explanations are nowhere to be found.
Please help.
I am building a circuit that will produce a sine wave as output.
I am using a 555 timer (astable) to create a frequency of 140Hz. This produces a square wave with an amplitude of about +5V.
Note that voltage is 0V and +5V (not -5V and +5V).
My problem is that I do not know how to turn the square wave into a sine wave.
I have read on various sites that you can use capacitors and inductors to filter
the signal to produce a sine wave, but calculations and explanations are nowhere to be found.
Please help.