1741706
Description
Mind Map by Clodagh Mullins, updated more than 1 year ago
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Created by Clodagh Mullins
almost 10 years ago
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Alternating currents
and Oscilloscopes
- Alternating
Currents
- Constantly
changing direction
- frequency =number
cycles completed per
second/Hz
- 1/time period
- 1/time period
- The time period-
time taken to
complete 1 cycle
- Peak values- maximum
values of V0 and I0
- RMS value- root mean
square value are the d.c
equivalent of an a.c
value- same power Is
dissipated
- rms value =peak value
divided by the square
root of two
- rms value =peak value
divided by the square
root of two
- Constantly
changing direction
- Oscilloscopes
- dot on screen
created by beam
of electrons
- X plates move the dot
horizontally - connected to the
time base circuit - calibrated
to time per centimetre
- y plates move the
dot vertically
- proportional to p.d
- p.d connected to y
plates via y input
- y input calibrated to
volts per division
- sometimes calibration
is referred to as the y
sensitivity or y-gain
- proportional to p.d
- dot on screen
created by beam
of electrons
Media attachments
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