The power-supply is one of the most important parts of an electronic design: it provides your circuit with power. It should be strong enough to provide your circuit with the right amount of current and it should be stable – no fluctuating values. In this compact article I explain the basic of a power supply.
For those of you who want to built a relative simple sine-wave generator, take a look at this circuit (scroll down). For some performances of the Composition department at the Royal Conservatory, we made 6 of these sine-wave generators. They are easy to build and show a relative good quality sine-wave.
This is a photo of the oscilloscope, showing the actual output of the sine-wave generator. Not perfect, but nice!