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Microphone-speaker

Active noise suppressing headphones try to keep the pressure constant or force it to follow some wanted program material. It succeeds in a chamber which is so small that only one waveform (=soundwave ...
User 0058933's user avatar
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Driving speaker with differential driver

There is no functional difference between any of the following: simulate this circuit – Schematic created using CircuitLab In each case, the loudspeaker will see the same potential difference ...
Simon Fitch's user avatar
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Driving speaker with differential driver

All you need is one follower and one inverter: There are several issues with this approach (and your schematic): Opamp idle power usage, even when the speaker doesn't play Requires a low voltage ...
bobflux'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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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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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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