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Define: Clamper
A circuit that adds a dc level to an ac voltage using a diode and a capacitor.
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Define: DC power supply
A circuit that converts ac line voltage to dc voltage and supplies constant power to operate a circuit or system.
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Define: Filter
In a power supply, the capacitor used to reduce the variation of the output voltage from a recitifier.
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Define: Full-wave rectifier
A circuit that converts an ac sinusoidal input voltage into a pulsating dc voltage with one output pulse occurring for each input cycle.
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Define: Half-wave recitifier
A circuit that converts an ac sinusoidal input voltage into a pulsating dc voltage with one ourput pulse occurring for each input cycle.
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Define: Limiter
A diode circuit that clips off or removes part of a waveform above and/or below a specidied level.
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Define: Line regulation
The change in output voltage of a regulator for a given change in input voltage, normally expressed as a percentage.
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Define: Load regulation
The change in output voltage of a regulator for a given range of load currents, normally expressed as a percentage.
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Define: Peak inverse voltage(PIV)
The maximum value of reverse voltage across a diode that occurs at the peak of the input cycle when the diode is reverse-biased.
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Define: Rectifier
An electronic circuit that converts ac into pulsating dc; one part of a power supply.
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Define: Regulator
An electronic device or circuit that maintains an essentially constant output voltage for a range of input voltage or load values; one part of a power supply.
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Define: Ripple voltage
The small variation in the dc output voltage of a filtered rectifier caused by the charging and discharging of the filter capacitor.
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Define: Troublshooting
A systematic process of isolating, identifying, and correcting a fault in a circuit or system.
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Summary Question - The dc power supply typically consists of what?
tranformer, diode rectifier, a filter, and regulator
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Summary Question - What does the output frequency of a half-wave rectifier equal?
the input frequency
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Summary Question - What is (PIV)?
Peak Inverse Voltage is the maximum voltage appearing across the diode in reverse bias.
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Summary Question -What is the output frequency of a full-wave rectifier?
is twice the input frequency.
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Summary Question - What are the two basic types of full-wave rectifier?
center-tapped and bridge.
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Summary Question - What is the output voltage of a center-tapped full-wave rectifier?
is twice the peak output voltage plus one diode drop.
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Summary Question - What is the PIV for each diode in a center-tapped full-wave rectifier?
is twice the peak output voltage plus one diode drop
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Summary Question -What does the peak output voltage of a bridge rectifiere equal?
the total peak secondary voltage less two diode drops.
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Summary Question - The PIV for each diode in a bridge rectifier is what?
- is approximately half that required for an equivalent center-tapped confiuration and is equal to the peak output voltage plus one diode
- drop.
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Summary Question - The ize of the Ripple voltage means what?
The smaller the ripple voltage, the better the filter.
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Summary Question - What is input or line regulation?
Regulation of output voltage over a range of input voltages.
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Summary Question - What is load regulation?
Regulation of output voltage over a range of load currents.
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Summary Question - What do clippers do?
Diode limiters cut off voltage above or below specified levels. Also called clippers.
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Summary Question - What do diode clampers do?
They add a dc level to an ac voltage.
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Summary Question - What are voltage multipliers used for?
high-voltage, low current applications such as for electron beam acceleration in CRTs and for particle accelerators.
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Summary Question - What does the voltage multiplier use?
a series of diode-capacitor stages.
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