Yes, the electrical code states that all electrical equipment must be grounded.
The most common carrier for AC power supplies are the CRS 8-Slot carrier, the most common supplier being cisco. The CRS 8-Slot helps the AC power supply to provide reliable power to all components.
By using rectification we can convert the AC into DC....
For residential equipment it is 24 volts
A transformer cannot convert AC into DC.
Most of the motors are AC. Fans, Mixer, Industrial equipment, Aircon, vacuum cleaner, plenty of applications use AC motor
You can use a voltage transformer or converter that is specifically designed to step down the voltage from 240V AC to 220V AC. Make sure to select a transformer that is rated for the appropriate power handling capacity to ensure safe and efficient operation.
Original equipment.
Transformer Power Supply
DC Bridge... We use DC supply, Detector is also a DC current detector and we use only resistive components no need for wegner's earthing device balancing time is comparatively less.. where as in AC bridges opposite of above. i.e. AC supply, AC current detector resisitive+ reactive componants need for wagner's earthing device and balancing time is high as we use AC supply..
R12 is original equipment
vac stands for AC voltage
Take it to someone with the equipment to do so.