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How can I convert a sine wave generated by PWM technique into a square wave?

What you're seeing on the oscilloscope is a normal square wave deformed by the high-pass filter that is turned on when the scope is used in AC mode. Solution: set the scope to DC mode. Besides that, ...
bobflux's user avatar
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1 vote

How can I convert a sine wave generated by PWM technique into a square wave?

Peter has nailed the reason for your apparently non-flat high and low on the square wave. The 741 is a particularly bad part for this application. Recommended minimum operating voltage is +/-10V ...
Spehro Pefhany's user avatar
1 vote

How can I convert a sine wave generated by PWM technique into a square wave?

An LM741 needs power rails much greater than 2.5 volts to begin thinking about working (if working is a word that can be used for a 741). So, throw away your 741 and use a comparator with a little bit ...
Andy aka's user avatar
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Diode directed into the negative terminal of a sinusoidal voltage source

Vout will be the same in both these scenarios: - You can connect ground where you want but, I'd connect it at the negative node of Vout if trying to understand what Vout looks like.
Andy aka's user avatar
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XR2206 Signal Generator breaks up and distorts badly all waveforms

It works now but, to tell you shortly what got it working. Some pointed out that it is not worthy because of poor quality, well, I disagree strongly. The built quality seems excellent, with minor &...
rantoniusw's user avatar
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Implementing a sine wave inverter with an oscillation circuit

Ten years later: It´s all about generating a PWM pulse train, including a feedback circuit. When not using a microcontroller, you have to use an Error amplifier + comparator. You also need two ...
Tomas Larsson's user avatar
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Building a unity-gain op amp with speaker?

A LM386 is designed to drive an 8-ohm loudspeaker - it is a good solution. But let's modify your original circuit to give more output... A 3.3V peak-to-peak sine wave driving an 8 ohm load requires ...
glen_geek's user avatar
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Building a unity-gain op amp with speaker?

You have an 8\$\Omega\$ speaker and a 100\$\Omega\$ resistor from collector to +6V, so the most voltage you're going to get at the speaker is $$ V_{pk} = 6V\cdot\frac{8\Omega}{8\Omega + 100\Omega} = 0....
GodJihyo's user avatar
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1 vote

Using a square and/or sine wave generator through a speaker

To hear what a sine wave sounds like when played through a speaker, you need three things. 1. A signal source, something that produces sine and square wave electrical signals. 2. An amplifier, ...
AnalogKid's user avatar
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1 vote

Using a square and/or sine wave generator through a speaker

What you're describing are normal (active) PC speakers. As in, the kind you can hook up to a computer via a 3.5mm audio plug. You can get some in a supermarket or might even have some already. The ...
Jonathan S.'s user avatar
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