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25 Cards in this Set
- Front
- Back
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What is the formula for "Inductive Reactance"?
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What is the formula for "Capacitive Reactance"?
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What is a "Tank Circuit"?
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Circuit with the ability to take energy from a power source, store the energy alternately in the inductor/capacitor and produce an output which is a continuous AC wave.
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What is the purpose of a "Filter Circuit"?
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Combination of capacitors, inductors, and/or resistors connected so that the filter will prevent passage of a certain band of frequencies.
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If the inductor and capacitor values are increased in a circuit, what happens to the resonant frequency? |
Decreases |
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When the magnetic field of the inductor is completely collapsed, where is the energy of the tank circuit stored? |
Capacitor |
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What are the two classifications of wave generators according to their output wave shape? |
1. Sinusoidal 2. Nonsinusoidal |
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What are the three networks used for frequency-determining devices?
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1. RC 2. LC 3. Crystal |
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What is another name for nonsinusoidal oscillators?
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Relaxation oscillators. |
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What is a nonrotating device that produces alternating current? |
Oscillators
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What are the three requirements necessary for oscillations to exist in a circuit?
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1. Amplification 2. Regenerative Feedback 3. Frequency-Determining Device |
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What are the two methods used for feedback coupling? |
Inductive and Capacitive |
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Which oscillator uses a tickler coil for feedback?
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Armstrong |
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Which oscillator uses a tapped inductor for feedback? |
Hartley |
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Which oscillator uses tapped capacitors for feedback? |
Colpitts |
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What are the three basic configurations of transistor oscillators? |
1. Common Collector (CC) 2. Common Emitter (CE) 3. Common Base (CB) |
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What is the identifying feature of a Colpitts oscillator? |
Split Capacitors |
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What is the frequency that is twice the fundamental frequency?
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Second Harmonic |
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What is the purpose of the buffer amplifier?
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Reduce interaction between oscillator and load. |
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What type of circuit is used to produce square or rectangular waves?
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Multivibrator |
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What type of multivibrator does not have a stable state?
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Astable |
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What type of multivibrator has one stable state?
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Monostable |
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What type of multivibrator has two stable states?
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Bistable |
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What is another name for the monostable multivibrator? |
One-shot |
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What components in a blocking oscillator controls pulse width?
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Transformer |
