Unit 15 - Electrical Circuits and their Application
Institution
PEARSON (PEARSON)
Section 1: Transducers, sensors and measuring devices
-detailed information with diagrams and tables
What is a thermocouple?
Making a simple copper-constant thermocouple (Experiment)
Investigating Thermistors
Section 2: Sensing and Measuring
PH meter
Moisture sensor
Pressure sensor
Don'...
Unit 15 - Electrical Circuits and their Application
All documents for this subject (34)
1
review
By: siaqahhussain • 7 months ago
Seller
Follow
nikomo
Reviews received
Content preview
Unit 15 D: Electrical Circuits and their
Application
Examine the uses of transducers, sensors and
other measurement
Nikki Moslares
BTEC LEVEL 3 APPLIED SCIENCE
,Section 1: Transducers, sensors and measuring devices
Every electrical circuit requires communication with the ‘’real world’’ where it
can be through reading an input signal on a switch or stimulating a form of an
output device in lighting up a bulb. Sensors and transducers are appropriate
apparatuses in an electronic system.
The term transducers and sensors are commonly utilised in measurement
systems. A sensor is a type of device that will identify any changes,
circumstances that involves with physical stimulus and gives a comparable
output signal that is measured or documented. An output signal can be a
calculable signal and any electrical quantity. Sensors are apparatuses which
executes input function because of the detection of a physical change like heat
or force which will be converted to an electrical signal.
A device that carries out an output function which is known as an Actuators
which are handled for control on external devices such as sound or movement.
Transducers are utilised in modifying energy of a single type to energy of a
different type like a microphone (input device) that transforms sound waves to
electrical signals that is passed through the amplifier to ‘’amplify’’ (controller)
and to a loudspeaker (output device) where it converts electrical signals to the
original form which are the sound waves, for instance a simple Input/Output
system (see below). Moreover, a transducer that changes measurable quantity
into electrical voltage will be identified as a sensor. (Sensors and Transducers, n.d.)
Cas.ee.ic.ac.uk. n.d. [online] Available at: <https://cas.ee.ic.ac.uk/people/dario/files/E302/1-
Sensors.pdf> [Accessed 14 May 2022].
SINGLE/OUTPUT SYSTEM USING SOUND TRANSDUCERS:
Image from:electronics-tutorials.ws
, Common Sensors and Transducers:
Quantity
Input Device Output Device
being
(Sensor) (Actuator)
Measured
Light Dependant Resistor
Lights & Lamps
(LDR)
LED’s &
Light Level Photodiode
Displays
Photo-transistor
Fibre Optics
Solar Cell
Thermocouple
Thermistor Heater
Temperature
Thermostat Fan
Resistive Temperature Detectors
Strain Gauge Lifts & Jacks
Force/
Pressure Switch Electromagnet
Pressure
Load Cells Vibration
Potentiometer
Motor
Encoders
Position Solenoid
Reflective/Slotted Opto-switch
Panel Meters
LVDT
AC and DC
Tacho-generator
Motors
Speed Reflective/Slotted Opto-coupler
Stepper Motor
Doppler Effect Sensors
Brake
Bell
Carbon Microphone
Sound Buzzer
Piezo-electric Crystal
Loudspeaker
Table from: electronics-tutorials.ws
(On the table, we can see what input and output devices are used in each
measurable quantity which will interact with each other to convert the quantity
into energy.)
Multimeter – this is a calibration tool, that measures more than two electrical
values. This is what technicians usually operate to run a standard diagnostic
within an electric industry.
There are two types of sensors:
Active (Sensor): is a transducer that creates instant electric current or voltage as
a response mechanism to an ‘’environmental situation’’ (they require external
power source). An active sensor transports and measures electromagnetic
energy (EM) and will self-destruct in a hijacking attempt. This sensor will
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller nikomo. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.65. You're not tied to anything after your purchase.
