University Of Technology
Department Of Biomedical Engineering
Electricity Laboratory
BY:Abbas Haider Abbas
Oscillator: It is a circuit that produces a
continuous, repetitive, or periodic signal that is
either a sine wave or a square wave. It converts
direct current (DC) from a power source into an
alternating current (AC) signal, as it is widely
used in many electronic devices. Ranging from
the simplest clock generators to digital
instruments such as calculators, computers and
complex peripherals.
Common examples of signals generated by
oscillators are signals broadcast by radio and
television transmitters, clock signals that
regulate computers, quartz clocks, and sounds
made by electronic alarms and video games.
The main types of oscillators:
Vienna Bridge Oscillator and Hartley Oscillator.
Phase shift (RC) oscillator.
Voltage control oscillator.
Colpitts oscillator.
Clapp oscillators.
Crystal oscillators and Armstrong oscillators.
Tuned collector oscillator.
Oscillator (Gunn).
Cross-over oscillators and multi-wave
oscillators.
Ring oscillators and electronic coupled
oscillators.
Oscillators (Dynatron).
Meissner oscillators and Royer oscillators.
FUNCTION GENERATOR
It is a device that generates for you the signal -
the wave - at the frequency you require -
accurate and stable within a wide range of
frequencies - from single Hz to several MHz
and with the voltage you require - accurate and
stable and in the wave shape you require -
usually sineWave, square and triangular.
In addition to generating square or rectangular
pulses with an accurate and stable time width,
repetitive or non-periodic, and with the required
voltage, amplitude or amplitude, through it you
can know the response - the gain - depending on
the frequency of the signal - and this is usually
in audio amplifiers or medium or supra-audible
frequencies. It is also possible to Generating the
vibration required for physical, electrical and
electronic experiments
The FUNCTION GENERATOR circuit often
consists of an 8038 integrated circuit. This
circuit can generate sine, triangle, and square
waveforms with frequencies from 20Hz to
200KHz within four stages that can be switched
between. The output amplitude can also be
controlled by controlling the voltage level at the
output. Amateurs can benefit from this circuit in
their mini laboratories. Circuit IC1 generates all
waveforms. It also contains a square wave
oscillator whose frequency can be controlled in
order to stabilize the vibration. By deriving the
square wave, the triangle wave is generated,
which in turn can be processed in order to
obtain the sine wave. All this is done internally
and without the need to use external elements.
