L
Lumpy
- Jan 1, 1970
- 0
My DMM has a scale to measure
Duty Cycle %.
Exactly what is that measuring?
L
Duty Cycle %.
Exactly what is that measuring?
L
Lumpy said:My DMM has a scale to measure
Duty Cycle %.
Exactly what is that measuring?
L
I suppose there is more than one way to say it. To me Duty Cycle is the
percentage of time the circuit is on vs. off in one period of the cycle.
John said:...duty cycle is the ratio of ON time of a
periodic waveform to the period of one
complete cycle of the
waveform, expressed as a percentage.
John Fields said:---
Sorry, but that's wrong. duty cycle is the ratio of ON time of a
periodic waveform to the period of one complete cycle of the
waveform, expressed as a percentage.
for instance, for:
_____ _____
SIG_____| |____________________| |_____
5-->| |<--- ton
20-->| |<-- tcy
100 ton 100 * 5
D = --------- % = --------- = 25% (1)
tcy 20
If it was, as you said,
"the percentage of time the circuit is on vs. off in one period of
the cycle", then we'd be looking at:
_____ _____
SIG_____| |____________________| |_____
5-->| |<--- ton
15->| |<-- toff
100 ton 100 * 5
D = --------- % = --------- = 33.3% (2)
toff 15
Which is wrong.
Lumpy" ([email protected]) said:I'm a musician.
L
Michael said:Well in that case, old analog
synthesizers counted on variable
duty cycle in order to get the right "tone"...
John Fields said:---
Sorry, but that's wrong. duty cycle is the ratio of ON time of a
periodic waveform to the period of one complete cycle of the
waveform, expressed as a percentage.
for instance, for:
_____ _____
SIG_____| |____________________| |_____
5-->| |<--- ton
20-->| |<-- tcy
100 ton 100 * 5
D = --------- % = --------- = 25% (1)
tcy 20
If it was, as you said,
"the percentage of time the circuit is on vs. off in one period of
the cycle", then we'd be looking at:
_____ _____
SIG_____| |____________________| |_____
5-->| |<--- ton
15->| |<-- toff
100 ton 100 * 5
D = --------- % = --------- = 33.3% (2)
toff 15
Which is wrong.
On second thought, if I read your notation correctly, I don't think you can
substitute "divided by" for "vs.". You can say Ali vs. Frazier and it
means, opposed by (my meaning was, "as opposed to") you can't say Ali
divided by Frazier. That would not make sense.
To re phrase, Percentage of time the circuit is on as opposed to off in one
period.
At any rate, probably still more word than needed and not very eloquently
put, hence the second paragraph.