Drivers, Relays, and Solid State Relays. Driver circuits. A typical digital logic output pin can only supply tens of MA of current. Even though they might require the same voltage levels, small external devices such as high-power LEDs, motors, speakers, light bulbs, buzzers, solenoids, and relays can require hundreds of MA. Larger devices might even need several amps.
Communicable Diseases Epidemiology Section Wisconsin Department of Health Services Division of Public Health P-42052 (Rev 08/2015) Page 1 of 2 Handwashing Disease Fact Sheet Why is handwashing important? Handwashing, when done correctly, is the single most effective way to prevent the spread of communicable diseases. Good handwashing technique is easy to learn and can significantly reduce the spread of infectious diseases among. children and adults.
the ways that communicable diseases are spread. â¢ Develop and analyze strategies for preventing communicable diseases. Write about the last time you had a cold. Include a list of the symptoms you experienced. Explain how you think you caught the cold and what you did to treat it. 622 Chapter 24 Communicable Diseases M ost of us donât spend much time thinking about micro-organisms, but they often impact our lives. Although most microorganismsâliving things too small to be seen without a microscopeâare harmless, a few, such as the viruses shown on this page, can cause communicable diseases. A communicable disease is a disease that is spread from one living thing to another or through the environment. Knowing how communicable diseases spreadcan help you choose behaviors to reduce your risk of getting them. Causes of Communicable Diseases A n organism that causes diseaseis called a pathogen. Common