EEC470 Series
Electricity and Electronics Constructor Kits
The Electricity and Electronics Constructor EEC470 series is a structured practical training programme comprising an unpowered construction deck (EEC470) and a set of educational kits.
Each kit contains a manual of student assignments
and a selection of components, supplied in a conventional storage tray. EEC470 offers extremely versatile facilities for the rapid and easy assembly of all
types of circuit, with provision for discrete components, digital and analogue integrated circuits and
high power devices.
The robust, reliable circuit connectors incorporated
in the Constructor allow the user to assemble a circuit almost as quickly as it can be designed. The logical layout of the components aids comprehension
of the theoretical principles involved. The EEC470
requires various d.c. and a.c. power supply inputs, all
of which can be provided by the Feedback PS445
power supply unit.
Several different kits are available, covering basic
electronics, amplifiers, power supplies and control of
machines making the EEC470 an ideal option for the
teaching of the subject from first principles. The only
test instruments required are those normally found in
electronics laboratories.
The kits available are as follows:
• EC471-2 Basic Electricity and Electronics
• EEC473-4 Amplifiers and Electronic Circuit
Applications
• EEC475 Power Supplies
• EEC476 Electronic Control of Machines
• EEC477 Optoelectronics
Features
•
•
•
•
•
•
Designed for vocational and industrial training
Rapid circuit construction
Wide range of kits covering key subject areas
Hands-on student assignments
Simplifies the study of basic components and circuits
Compact construction for easy use and storage
Each kit is housed in a storage tray containing:
• A set of discrete components appropriate to the course, plugged into the tray
• A shadow diagram of the components and identifying information
The kits are used with the EEC470 construction deck which provides all the necessary connecting leads.
Page 1 of 9
10/2013
EEC470 Series
Electricity and Electronics Constructor Kits
The EEC470 series of Electricity and Electronics Constructor kits has been carefully designed
to provide a complete and thorough foundation course in electro-technology and basic
electronics.
Manual of Assignments / Student Courseware
The course material is contained in the detailed and comprehensive manuals that accompany
each kit. Each manual is laid out in such a way that it can be used either in a group teaching situation or by individual students employing self-paced learning.
Particular emphasis is laid on the need for the students to discover the effects for themselves,
rather than just proving stated theory.
Assignments in the manuals contain, where applicable, sections under the following
headings:
• Objectives – Stating the educational aims of the assignments
• Introduction – Providing a brief lead-in to the topic
• Experimental Procedure – Two or three practical activities
• Practical Considerations and Applications – Relating the work studied to realistic applications
• Summary – Of the main conclusions
• Exercise – To test and reinforce understanding of the subject matter
In addition, numerous questions are posed throughout the assignments which direct the student,
step by step, to a thorough knowledge of the topic.
Construction Deck - EEC470
The deck allows all the circuits described in the
student assignment manuals to be built using the
supplied connecting leads and the components
provided in the individual kits.
The following power inputs are required:
D.C.: 0-20 V variable @ 350 mA
A.C.: 5, 10, 15, 20, 25 V @ 300 mA
Component Set - EEC470-001
To enable users to use the constructor without purchasing all of the kits, a blank set of carriers is
available. The set comprises 30 x 2 pin component carriers, 15 x 3 pin component carriers and
8 x 4 pin component carriers.
Page 2 of 9
10/2013
EEC470 Series
Electricity and Electronics Constructor Kits
Power Supply – 92-445
The Feedback 92-445 power supply provides the necessary power requirements in one compact
unit, specifically designed for use with the EEC470 Construction Deck. Due to its open board
construction, it is also suitable for student investigation of power supply characteristic behaviour.
Specification
Outputs
Stabilised 5 V ± 0.2 V @ 1 A max
Load regulation typically 0.1 %
Noise and ripple < 10 mV
Stabilised ± 15 V ± 0.6 V @ 0.3 A each rail
Load regulation typically 0.1 %
Noise and ripple < 10 mV
Stabilised variable 0-20 V @ 0.35 A max
Load regulation typically 0.2 %
Noise and ripple typically 5 mV
A.C. voltages 5, 10, 15, 20 and 25 V rms from a tapped winding @ 0.3 A total output current. Load
regulation typically 6 % for 25 V output, 16 % for 5 V output.
Output protection
D.C. outputs have overvoltage, overcurrent and reverse voltage protection.
A.C. outputs are short circuit protected by 300 mA fuses (20 mm x 5 mm).
LED indication is provided of overcurrent and tripped overvoltage circuits on all D.C. outputs.
Connections
2 mm and 4 mm sockets are provided for connection to the A.C. and D.C. outputs.
Permanently connected line input cord; 3 wire, live, neutral and earth.
Line Supply Requirements
100, 110, 120, 200, 220, 240 V A.C. selectable by voltage selector on the PCB.
Fused at 0.25 A for 200 V – 250 V A.C. operation and 0.5 A for 100-125 V A.C. operation by antisurge 20 mm x 5 mm fuses.
Rating: 50 VA 50/60 Hz
Basic Electricity and Electronics – EEC471-2
A kit of Basic Electricity & Electronics components, mounted on small printed circuit carriers,
which are housed in a convenient storage tray with identification information. The kit introduces
the student to the basic principles of electrical theory and circuits and the physical and electrical
characteristics of commonly used semiconductor devices and circuits. A supporting manual is
supplied that begins with an introduction to the general concepts of electricity and electronics
followed by a series practical assignments. The circuits are constructed on the EEC470 construction deck. The deck's layout allows swift and simple circuit construction and the high quality beryllium copper spring contacts have a self-cleaning action to ensure a long life of good electrical
contact. The combination of EEC470 and EEC471-2 requires a 92-445 Power Supply.
Page 3 of 9
10/2013
EEC470 Series
Basic Electricity and Electronics – EEC471-2
Features
• Designed for Vocational and Industrial
Training rapid circuit construction
• A wide range of kits can be updated or
added to as required
• 'Hands-on' student assignments
Subject Area
• Resistance
• Resistor Networks
• Resistors in Series and
Parallel
• Superposition Theorem
• Thévenin’s Theorem
• Power
• Capacitance
• Capacitors in Series and
Parallel
• Time Constant
• Electromagnetic Induction
• Inductance
•
•
•
•
•
•
•
•
•
•
Simplifies the study of basic components
and circuits through to advanced systems
Compact construction for easy use and
storage
RMS Value of an AC
Waveform
Resistance in AC Circuits
Capacitance in AC Circuits
Inductance in AC Circuits
Capacitive and Inductive
Reactance
The series CR and LR
circuits
Impedance of a Series CR
Circuit
Impedance of a Series LR
Circuit
•
•
•
•
•
•
•
•
•
•
•
Impedance of a Series
LCR Circuit
Parallel Impedances
Series Resonance
Power in AC Circuits
Parallel Resonance
The Transformer
The Semiconductor Diode
Half-Wave Rectification
Full-Wave Rectification
The Zener Diode
Transistor Familiarisation
Amplifiers and Electronic Circuit Applications – EEC473-4
This kit introduces common semiconductor amplifier configurations that enable the student to
investigate their characteristics and allow an appreciation of their use. The kit comprises components used for amplifier and electronic circuit applications, mounted on small printed circuit carriers, which are housed in a convenient storage tray with identification information.
The supplied student manual contains assignment work that applies the basic principles learnt to
construct and test a wide range of common amplifiers, oscillators and control circuits.
The circuits are constructed on the EEC470 construction deck. The deck's layout allows swift
and simple circuit construction and the high quality beryllium copper spring contacts have a selfcleaning action to ensure a long life of good electrical contact.
The combination of EEC470 and EEC473-4 requires a 92-445 Power Supply.
Subject Area
• Electronic amplifiers
• AC and DC Gain
• Amplitude Distortion
• Frequency and Phase
Distortion
• Negative Feedback
• Frequency Response
• The AC Amplifier
• D-type Flip Flop
•
•
•
•
•
•
•
•
The Operational Amplifier
Push-pull Amplifiers
Passive Attenuators
Common-emitter Amplifier
Emitter Follower
Complementary Push-pull
Amplifier
Differential Amplifier
Clocked SR and J-K Flip Flop
Page 4 of 9
10/2013
•
•
•
•
•
•
•
Operational Amplifier
Astable Multivibrator
Phase-Shift Oscillator
The Schmitt Trigger
Voltage Regulator
TTL NAND and ExclusiveOR Gates
Set-Reset Flip Flop
EEC470 Series
Electricity and Electronics Constructor Kits
Power Supplies – EEC475
This kit shows the operation and basic design principles of various types of power supply. The
student can make measurements of power supply performance, such as regulation, efficiency
and current limit characteristics.
The circuit operation can be studied from oscilloscope waveforms. A student’s assignment manual, giving step-by-step instruction and patching diagrams is supplied. Twenty one assignments
provide a comprehensive course of study.
The kit comprises a selection of passive and active power supply components, housed in a convenient storage tray with identification information. The EEC475 is used in conjunction with the
EEC470 deck to provide a course of study that brings together practical experience and the related theoretical concepts, ranging from basic principles to power supply design.
The combination of EEC470 and EEC475 requires a 92-445 Power Supply.
Features
• Designed for Vocational and Industrial
Training Rapid circuit construction
• Wide range of kits can be updated or
added to as required
• 'Hands-on' student assignments
Subject Area
• Rectification
• Rectifier and Transformer Measurement
of Voltages
• Capacitive filters
• Voltage and current waveforms with or
without reservoir capacitor
• Factors effecting ripple voltage
• Voltage doublers
• Half wave voltage doubler
Page 5 of 9
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Simplifies the study of basic components
and circuits through to advanced systems
Compact construction for easy use and
storage
Full wave voltage doubler
Simple voltage stabilisers
Zener diode stabiliser characteristics
Measurement of Ro
Regulation and efficiency
Current limiting
Current fold-back
Over-voltage protection by ‘crowbar’
Variable dc supplies
Variation of regulated output
Regulation measurement
Performance of a Feedback regulator
Integrated circuit voltage regulator
Regulator operation
Observation of thermal shutdown
Inverters and Converters
Switch-mode regulator
Observing a switching waveform
Measurement
Calculation of output voltage
Efficiency
Switching frequency
10/2013
EEC470 Series
Electricity and Electronics Constructor Kits
Electronic Control of Machines – EEC476
This kit shows the operation of various types of machine control circuit. It comprises two boards,
one of which carries a universal machine which may be controlled by ac or dc voltages. The
content of the manual is aimed at giving a practical understanding of machine control using a
non-mathematic approach to the subject.
The kit introduces the student to device characteristics and dc motor control methods, including
PWM motor control. The hardware includes a dc motor module with optical incremental encoder and eddy current brake. The circuits are constructed on the EEC470 construction deck.
The deck's layout allows swift and simple circuit construction and the high quality beryllium copper spring contacts have a self-cleaning action to ensure a long life of good electrical contact.
The combination of EEC470 and EEC476 requires a 92-445 Power Supply.
Features
• Designed for Vocational and Industrial
Training Rapid circuit construction
• Wide range of kits can be updated or
added to as required
• 'Hands-on' student assignments
Subject Area
• Characteristics and operation of the power
MOSFET
• Silicon controlled rectifier (SCR) D.C.
characteristics
• Forward and Reverse characteristics
• The unijunction transistor
• Zener diode stabilizer characteristics
• UJT switching action
• UJT relaxation oscillator
• Phase controlled UJT oscillator
• SCR circuits with resistive and complex loads
• Phase angle control
• Phase control of inductive load
• Effect of the flywheel diode
• Characteristics of the TRIAC
• Blocking characteristic
Page 6 of 9
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Simplifies the study of basic components
and circuits through to advanced systems
Compact construction for easy use and
storage
Positive and negative
Speed measurement methods
Incremental encoder calibration
Tachogenerator calibration procedure
Frequency to voltage conversion
Electronic Tachogenerator calibration
Phase angle control of a D.C. motor
Speed control of a D.C. motor
Speed and torque of a D.C. motor
Feedback control of a D.C. motor
Linearity of speed control
Speed-torque characteristic
Pulse Width Modulation
Pulse width control of power on-load
Pulse Width Modulation Control of a D.C.
Motor
10/2013
EEC470 Series
Electricity and Electronics Constructor Kits
EEC477 – Optoelectronics
This kit of optoelectronic components introduces the student to the characteristics of various
Optical devices like light emitting diodes (LEDs), light dependent resistors (LDRs) and photodiodes. These are mounted on small printed circuit carriers, which are housed in a convenient
storage tray with identification information.
The kit contains
• Light emitters: Tungsten Lamp
• LEDs: red, green, yellow, bi-colour
(red/green), red, 3mm pair (2mA/ standard).
• Photo detectors: photodiode,
phototransistor, light activated switch, light
dependent resistor (LDR).
• Optocouplers: transistor output, type 4N25.
Darlington output, Type 4N32.
•
•
•
Driver modules: Type 741 Op amp, flasher
module using type 555 timer, type LM3909
flasher IC.
Fibre optic link: A short length of suitably
terminated fibre optic cable.
Active and passive components: A range of
bi-polar transistors, diodes, capacitors and
resistors.
The circuits are constructed on the EEC470 construction deck. The deck's layout allows swift
and simple circuit construction and the high quality beryllium copper spring contacts have a selfcleaning action to ensure a long life of good electrical contact.
The combination of EEC470 and EEC476 requires a 92-445 Power Supply.
Features
• Designed for Vocational and Industrial
Training Rapid circuit construction
• Wide range of kits can be updated or
added to as required
• 'Hands-on' student assignments
Subject Area
• Light emitter characteristics
• Light emitter driving requirements
• LEDs in Series and Parallel
• LEDs in AC circuits
•
•
•
•
•
Simplifies the study of basic components
and circuits through to advanced systems
Compact construction for easy use and
storage
Flasher circuits
Photo-detection circuits
Optocouplers
Specification
EEC470 Construction Deck
A free standing circuit construction deck with provision for connection to an external power supply and peripheral equipment comprising:
A circuit building section with 48 positions, each position having 4 x 2 mm sockets, and accepting the connecting leads, and discrete components supplied with each kit.
3 separate bus lines, each having 19 x 2 mm sockets with a 4 mm socket at one end.
Page 7 of 9
10/2013
EEC470 Series
9 x 4 mm sockets to accept connections from external peripheral equipment and test instruments.
A power component section accepting up to 2 devices, each having integral heat sinks.
7 x 4 mm labeled sockets to accept external power supply connections.
An IC module section for a 16-pin carrier.
Set of 2 mm and 4 mm connecting leads.
Weight and Dimensions
EEC470 Width: 220 mm, Height: 25 mm, Depth: 295 mm
All kits are supplied in standard trays, but vary in weight.
Width: 220 mm, Height: 45 mm, Depth: 295 mm
Weight:
EEC470: 0.5 kg
EEC471: 0.75 kg
EEC472: 0.75 kg
EEC473: 0.75 kg
EEC474: 0.75 kg
EEG475: 0.75 kg
EEC476: 4.0 kg
EEC477: 0.75 kg
92-445 Width: 296 mm, Height: 72 mm, Depth: 222 mm,
Weight: 1.8 kg
Ordering Information
Order: EEC470 Electricity and Electronics Constructor Deck
Order: EEC471-2 Basic Electricity and Electronics
Order: EEC473-4 Amplifiers and Circuit Applications
Order: EEC475 Power Supplies
Order: EEC476 Electronic Control of Machines
Order: EEC477 Optoelectronics Trainer
Order: EEC470-001 Blank Carriers for use on EEC470 (30 x 2 pin, 15 x 3 pin, 8 x 4 pin)
Order: 92-445 Power Supply 0-20 V dc variable; ±15 V dc; +5 V d.c.; 5, 10, 15, 20, 25 V a.c.
Page 8 of 9
10/2013
EEC470 Series
Tender Specification
EEC470. Circuit construction deck for use with associated kits, incorporating patch board with
provision for discrete components, integrated circuits and high power devices. Supplied with
24 x 2 mm, 4 x 2/4 mm and 9 x 4 mm connecting leads.
EEC471-2. A kit of Basic Electricity components for use with circuit construction deck EEC470
to study electrical circuit theory and the physical and electrical characteristics of commonly
used semi-conductor components. To include manual of assignments.
EEC473-4. A kit of amplifier components for use with circuit construction deck EEC470 to
study common semiconductor amplifier configurations, their characteristics and uses in circuit
design. To include manual of assignments.
EEC475. A kit of power supplies components for use with circuit construction deck EEC470 to
study the operation and basic design principles of various types of power supply. To include
manual of assignments.
EEC476. A kit of electronic control components and universal machine for use with circuit
construction deck. EEC470 to show the construction and operation of various types of machine control circuit whilst controlling a rotating machine. To include manual of instructions.
EEC477. A kit of optoelectronic components for use with circuit construction deck EEC470 to
show the construction and operation of various types of circuit utilising optical technology. To
include manual of instructions.
92-445. Power Supply providing variable 0-20 V d.c. output @ 350 mA; ±15 V d.c. @ 300 mA;
+5 V d.c. @ 1 A; 5, 10, 15, 20, 25 V a.c. rms @ 300 mA.
For further information on Feedback equipment please contact ...
Feedback Instruments
5 & 6 Warren Court
Park Road, Crowborough
East Sussex
TN6 2QX
United Kingdom
Tel: +44 1892 653322
Sales: sales@feedback-instruments.com
Website: www.feedback-instruments.com
Feedback reserves the right to change these specifications without notice
Page 9 of 9
10/2013