Diseases that vaccines prevent can be. dangerous, or even deadly. Vaccines greatly. reduce the risk of infection by working with. the bodyâs natural defenses to safely develop. immunity to disease. This fact sheet explains. how the body fights infection and how. vaccines work to protect people by. producing immunity.
Low Voltage Transformers. 1  A low voltage transformer literally transforms the standard line voltage in your home or business (120 or 277 volts) to a lower 12 or 24 volts. This lets you safely supply power to popular low voltage lighting systems like recessed can lights, pendant lights, puck lights and outdoor light fixtures. 123.
This is because so many devices need to convert from the high AC voltage received from the mains power supply to a more lower DC voltage. How this is achieved is through a step-down transformer. The step-down transformer may convert 120VAC from mains to 12V by having a primary to secondary coil with a 10:1 ratio. The voltage output by the transformer is 12VAC.