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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Alternating currents Ac |
The flow of electric charge periodically reversing direction |
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(AC) usual waveform? |
Sine wave |
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(Ac) electronic circuits the produce high frequency |
Oscillators |
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An example of a Oscillator is.. |
An AM Radio station receiver, computers, metal detectors, and stun guns |
High frequency |
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Rotor Bars are only found in .... |
(AC) .....Never in (DC) |
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What is FREQUENCY? |
The amount of times AC currents change directions in a Second |
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Frequency is measured in... |
Hertz [Hz] |
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The military sometimes use 400 Hz, For benefits of... |
Reduced Weight of apparatus or High Motor Speed |
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Low Frequency cause... |
.Noticeable Flicker in lamps. .Eases the design of electric motors |
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What is Ratification in Electricity |
The process of changing AC to DC Or Periodically Reversing Direction |
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Three things that happen when DC is added to AC |
-The resistance is less, -More current flows through the wire -Heat Builds Up |
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How many diodes should you find in a bridge rectifier |
A bridge rectifier (Full wave rectifier) Converts Ac to DC current. Allowing it to Flow one way |
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What are Diodes? |
-Two terminal devices like resistors and capacity -Dont have many terminals like Transistors or Integrauted circuits |
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If voltage across a diodes is negative |
No current can flow through |
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If current passing through diodes can only go in one direction. (Forward) What if currents try to change directions? |
Currents trying to move opposite are blocked |
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What is DC |
The unidirectional flow of electric charge |
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Galvanic Current is another word for |
DC |
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Dc flow in a constant direction. They may be found in ? |
Wire conductors Semi-Conductors Insulators Evena Vaccum |
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Dc are always? |
Positive and Negative |
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