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30 Cards in this Set
- Front
- Back
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Diode limiter |
Changes AC to pulsing DC |
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Clamper |
Adds DC signal to AC input |
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Forward biased |
Negative terminal of voltage source connected to negative type material and the positive terminal of the voltage source is connected to positive type material |
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Reverse biased |
Negative Terminal of voltage source connected to positive type material and the positive terminal of the voltage source is connected to negative type material |
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All electron tubes must have a ______ and a_________. |
Anode and cathode |
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A triode is a diode with a_________ _____ added between the cathode and plate |
Control grid |
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A tetrode is a triode with a______ ____ added between the control grid and the plate. |
screen grid |
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A pentode is a tetrode with a________ ____ added between the plate and screen grid. |
Suppressor grid |
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A transistors purpose is to |
Control a large signal with a small one |
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Two types of signals applied to transistors: |
AC or DC input and DC bias |
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Base to emitter PN junction is_______ biased. |
Forward |
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Base to collector PN junction is_______ biased. |
Reverse |
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Increasing base bias in a transistor__________collector current. |
Increases |
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The point where an increase in base voltage does not increase collector current is called__________. |
Saturation |
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The point where the base bias ends up reverse-biasing the EB junction, and IB and IC current flow stops is called_______. |
Cutoff |
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Class A amplifiers have: |
High fidelity and low efficiency |
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Class B amplifiers: |
One alternation cutoff with medium fidelity and efficiency |
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Class C amplifiers: |
Low fidelity and high efficiency |
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Three amplifier configurations are: |
Common emitter, common collector, and common base. |
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Cascade amplifiers have the_______ of one amplifier connected to the_____ of the next amplifier to increase gain. |
Output Input |
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Each individual amplifier is called a |
Stage |
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When troubleshooting a multistage amplifier, after you identify the faulty stage, troubleshoot the stage as an : |
Individual circuit |
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In RC coupled amplifiers, normal operation is verified by comparing measured and calculated______ ______ ___. |
Total circuit voltage gain. |
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Purpose of push - pull amplifiers is to : |
Power amplifier |
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Transistor bias voltage measurements are made : |
After the faulty stage is identified. |
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In a common collector circuit, as base voltage increases emitter current______. |
Increases |
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Common collector circuit is an amplifier because of: |
A large current gain |
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In common base circuits, as emitter voltage increases, emitter current : |
Decreases |
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What type of output signal is produced by a class C common base amplifier? |
In phase and amplified. |
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Most common type of coupling method is |
RC |
