Hi what are the conventional definition for these common waveforms and their polarities?
- sine
- square
- triangle
- sawtooth
- pulse
On many schematics as well as datasheets I see an oscillator's waveform drawn without the horizontal x axis leaving me to wonder if it's an AC or DC signal. While playing with dual supply op amp oscillator circuits my scope reveals interesting data ($50 scope) although I have no definitive data about if what I'm seeing is really AC or DC.
On a side note.. I harvested the passive element of an active piezoelectric buzzer to confirm an AC signal and I made the following observations with AC then DC square wave across the buzzer
1) AC produced an audible tone as expected around 440hz A
2) DC produced a very faint hissing noise, this leads me to believe there is really an AC voltage across the element
One theory describes a square wave as a sine wave with an infinite number of odd harmonics which would seem to make sense in regards to #2
So to bring this all together, how is a signal type identified and what are the conventions for each type?
Thanks
- sine
- square
- triangle
- sawtooth
- pulse
On many schematics as well as datasheets I see an oscillator's waveform drawn without the horizontal x axis leaving me to wonder if it's an AC or DC signal. While playing with dual supply op amp oscillator circuits my scope reveals interesting data ($50 scope) although I have no definitive data about if what I'm seeing is really AC or DC.
On a side note.. I harvested the passive element of an active piezoelectric buzzer to confirm an AC signal and I made the following observations with AC then DC square wave across the buzzer
1) AC produced an audible tone as expected around 440hz A
2) DC produced a very faint hissing noise, this leads me to believe there is really an AC voltage across the element
One theory describes a square wave as a sine wave with an infinite number of odd harmonics which would seem to make sense in regards to #2
So to bring this all together, how is a signal type identified and what are the conventions for each type?
Thanks