How to Works A BRIDGE TYPE POWER SUPPLY
Bridge Diode power supplies are used in many types of electronic equipment such as televisions,Video recorders and stereo systems. Power supply bridge circuit is unique because It can produce full output wave without using center tapped transformer. Typical Diamond-shaped diagram power supply of this type is shown in the Figure.
Figure: Bridge-Rectifier power-supply circuit
You can think of a bridge rectifier circuit electronic switching system. Think of a diode Rectifiers as all switching as pulses of positive ac pulses line- B and all negative Pulses of line-B or chassis ground.