Flashcards
101
Cards in this deck (28)
- 1Types of Semi ConductorsDiodes, transistors
- 2Load perform:Work
- 3Fixed ResistorsCarbon Composition
Carbon Film
Metal Film
Wire Wound - 4Wire woundUsed for high current applications
- 5CCWMaximum R
- 6CWMinimum R
- 7TaperVariation of resistance in relation to the angle of the shaft rotation
- 8Linear TaperOne-Half rotation = one half maximum value
- 9LogarithmicOne half rotation = 10% (slower increase)
- 10Three types of Variable ResistorsCarbon Composition
Wire wound
Metal film - 11Protection DeviceDesigned to stop current flow by opening
Protects load and power supply - 12Carbon - ZincLow cost = popular
used in portable devices - 13AlkalineThree times shelf life capacity of carbon
miniature sizes - 14MercuryHigh energy
small
long shelf life
used for watches, hearing aids, pacemakers
low power applications - 15Silver oxideHIgh capacity
increased cost
High currents short periods
low power applications - 16LithiumLightweight long shelf life
High Discharge rate
LCDS, computer memory, calculators - 17Lead acidmust be used upright
auto
robot - 18nickel cadmiumhigh capacity
expensive
three times discharge rate
used in tools because of positioning
suffer from memory effect - 19nickel metal hydrideused in electronic applications
- 20lithium ionsimilar to ni-cd
used in electronic and medical equipment - 21batteries in a seriesincreased voltage (applied)
- 22batteries in parallelincreased current (total)
- 23solenoiduses electromagnet to open or close a valve
- 24relayelectromagnet closes or opens switches
- 25Trouble shooting step oneanalyze
use senses
examine circuits
develop an operation chart
diagnose symptoms - 26trouble shooting step twocheck set up
plugs, switches , proper placement - 27trouble shooting step 3calculate and measure
compare
determine fat - 28trouble shooting step 4check the results
make repairs
repeat steps if needed
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- Flashcards on 101, created by Rick Mead on 03/02/2018.
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- Rick Mead
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