Relays and Timers - CEU
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In an electromechanical relay, contacts come in a number of configurations, depending on the number of breakers, poles and throws that make up the relay. 
This type of solid-state relay turns ON the load when the control voltage is applied and the voltage of the load is close to zero. 
_____________ are used in applications where functions need to be delayed or loads need to be maintained for a predetermined period of time. 
How many circuits can a single throw contact control?
The ______________ consists of an input circuit, a control circuit and an output circuit. 
Power is removed from the timer and a preset period of time passes before the contacts return to their normal state when using a(n) _____________ timing function. 
A solid-state relay has a shorter life and is more susceptible to contact wear-out when compared to an electromechanical relay. 
___________ are switches that are usually operated by a magnetic coil.
A timer can be modified to deliver more than one type of timing function.
A solid-state timer can control timing functions ranging from a fraction of a second to hundreds of seconds.