Electronics Flashcards
Vpk ➡️ Vrms
Vpk / root 2
Works for all waves
Vrms ➡️ Vpk
Vrms x root 2
Works for all waves
Vpk ➡️ Vavg
1phase, 1/2 wave
Vpk x .318
Vpk ➡️ Vavg
1phase, full wave
Vpk x .637
Vpk ➡️ Vavg
3phase, 1/2 wave
Vpk x .827
Vpk ➡️ Vavg
3phase, full wave
Vpk x .955
Vrms ➡️ Vavg aka Form Factor
1phase, 1/2 wave
Vrms x .45
Vrms ➡️ Vavg aka Form Factor
1phase, full wave
Vrms x .90
Vrms ➡️ Vavg aka Form Factor
3phase, 1/2 wave
Vrms x 1.17
Vrms ➡️ Vavg aka Form Factor
3phase, full wave
Vrms x 1.35
Frequency
1phase, 1/2 wave
1 x Hz (source)
Frequency
1phase, full wave
2 x Hz (source)
Frequency
3phase, 1/2 wave
3 x Hz (source)
Frequency
3phase, full wave
6 x Hz (source)
Vmin
1phase, 1/2 and full wave
O volts
Vmin
3phase, 1/2 wave
Vpk x sin 30
Vmin
3phase, full wave
Vpk x sin 60
Vmax
Vpk for all waves
Ripple Volts aka pk to pk ripple voltage
Vmax - Vmin
Vmax is Vpk for all waves
Vmin is 0v for 1phase, 1/2 and full
Vmin is Vpk x sin 30 for 3ph, 1/2 wave
Vmin is Vpk x sin 60 for 3ph, full wave
PIV
V line voltage (phase x root3) x root 2
Period of each cycle
P = 1 / f
P = period
f = frequency
V inst
Vpk x sin ø
How to get Vavg for 1/2 wave
Vavg = Vpk (1+cosø/2*(pie))
How to get Vavg for full wave
Vavg = Vpk (1+cosø/(pie))
Ie : current in the emitter
IB + IC
What is saturation voltage?
Vce = .1v
How can you find base current/collector current with Beta?
(IC / Beta) or (IB x Beta)
