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.
With a step up transformer or step down transformer the voltage ratio between primary and secondary will mirror the turns ratio (except for single phase smaller than 1 kva which have compensated secondaries).A practical application of this 2 to 1 turns ratio would be a 480 to 240 voltage step down.ith a step up transformer or step down transformer the voltage ratio between primary and secondary will mirror the turns ratio (except for single phase smaller than 1 kva which have compensated secondaries).