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Amplifier
An electronic
amplifier, amplifier, or (informally) amp is
an electronic device that increases the power of asignal. It does this by taking energy from a power supply and controlling the output to match the
input signal shape but with a larger amplitude. In this sense, an amplifier modulates the
output of the power supply.
Numerous types of
electronic amplifiers are specialized to various applications. An amplifier can
refer to anything from an electrical circuit that uses a single active component, to a complete system such as a packaged
audio hi-fi amplifier.
In an inverting
amplifier, the output voltage changes in an opposite direction to the input
voltage.
A pulse
generator is either an electronic circuit or a piece of electronic test equipment used to generate rectangular pulses.
This article describes the test equipment.
Pulses can then be
injected into a device that is under test and used as a stimulus or clock
signal or analyzed as they progress through the device, confirming the proper
operation of the device or pinpointing a fault in the device. Pulse generators
are also used to drive devices such as switches, lasers and optical components,
modulators, intensifiers as well as resistive loads.The output of a pulse
generator may also be used as the modulation signal for a signal generator
Basic
AC-DC power supplies
Direct current (DC) is the unidirectional flow of electric
charge. Direct current is
produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can
also flow through semiconductors, insulators, or even through a vacuum as in electron
or ion beams. The electric current
flows in a constant direction, distinguishing it from alternating
current (AC). A term
formerly used for direct current was galvanic current
Question
Calculate the approximate DC output voltage of this power supply
when it is not loaded:
|
|
Vout ≈ 21.4 volts
Notes:
Ask your students to explain how they solved for this output voltage, step by step.
Ask your students to explain how they solved for this output voltage, step by step.
