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SINGLE PHASE

Circuit and output voltage waveform across a - b

Fig. 1 : Half wave

Fig. 2 : Full wave centre tap

Fig. 3 : Full wave bridge

Current Ratios

Voltage Ratios

A

B

C

Fundamental

Ripple

Frequency

R

L

R

L

R

L

D

E

F

Half

Wave

1f

1.0

1.57

-

3.14

-

1.57

-

2.22

1.57

3.14

Half

Wave

Centre

Tap

2f

0.5

0.785

0.707

1.57

1.0

0.785

0.707

1.11

2.22

1.57

Full

Wave

Bridge

2f

0.5

0.785

0.707

1.57

1.0

1.11

1.0

1.11

1.11

1.57

NOTES

R = Resistive load.

L = Inductive load.

A = Ratio of RMS current to DC output current. Arm fuses are rated for this RMS current.

B = Ratio of peak device current to DC output current.

C = Ratio of secondary RMS line current from supply to DC output current. Line fuses are rated for this RMS current.

D = Ratio of no load RMS line to line voltage to no load DC voltage.

E = Ratio of RMS phase voltage to DC voltage.

F = Ratio of peak phase voltage to DC voltage.

AN5569

Standard Waveforms

Application Note

AN5569-1.1 JULY 2005 ( LN24023)