1What is the function of a diode?
Convert AC voltage to DC voltage
2A single diode will allow rectification referred to as?
Half wave rectification
3A bridge rectifier is an advantage because it produces what kind of rectification?
Full wave rectification
4Rectifiers are used on microwave ovens to do what?
Turn high AC voltage into high DC voltage
5A triac switches a circuit while it is at a no load condition. (T or F)
True
6A triac switches when an AC voltage is supplied to what terminal?
The gate
7Can a DC voltage be used to trigger a triac?
Yes, but it needs to be triggered constantly to turn the triac back on
8Why are heat sinks needed when using a triac?
Dissipate heat that builds up inside the device
9Most digital meters used in the field will require a separate external battery to test a diode? (T or F)
True
10How can an analog meter be used to test a diode?
Measure the resistance both forward and reverse biased if the meter has a 10K scale that uses a 9 volt battery for supply.
11What is the function of a varistor?
To protect a circuit from transient voltages
12How does a varistor work?
If will conduct voltage that exceeds its "clamping rating" to ground
13What do you need to replace a varistor?
A duplicate with the same or close clamping voltage rating