Electricity and Electronics Constructor Kits

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Mervin Hampton
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1 EEC470 Series 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 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

2 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 350 ma A.C.: 5, 10, 15, 20, ma Component Set - EEC 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

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.

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.

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).

3 Power Supply The Feedback 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 ± A max Load regulation typically 0.1 % Noise and ripple < 10 mv Stabilised ± 15 V ± A each rail Load regulation typically 0.1 % Noise and ripple < 10 mv Stabilised variable 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 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 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 Power Supply. Page 3 of 9 10/2013

4 Basic Electricity and Electronics EEC471-2 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 Simplifies the study of basic components and circuits through to advanced systems Compact construction for easy use and storage 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 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 Power Supply. Electronic amplifiers AC and DC Gain Amplitude Distortion Frequency and Phase Distortion Negative Feedback Frequency Response The AC Amplifier The Operational Amplifier Push-pull Amplifiers Passive Attenuators Common-emitter Amplifier Emitter Follower Complementary Push-pull Amplifier Differential Amplifier D-type Flip Flop Clocked SR and J-K Flip Flop Operational Amplifier Astable Multivibrator Phase-Shift Oscillator The Schmitt Trigger Voltage Regulator TTL NAND and Exclusive- OR Gates Set-Reset Flip Flop Page 4 of 9 10/2013

Power Supplies EEC475 This kit shows the operation and basic design principles of various types of power supply.

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 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

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 Rectification Rectifier and

5 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 Power Supply. 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 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 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 Page 5 of 9 10/2013

Electronic Control of Machines EEC476 This kit shows the operation of various types of machine control circuit.

The content of the manual is aimed at giving a practical understanding of machine control using a non-mathematic approach to the subject.

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 combination of EEC470 and EEC476 requires a 92-445 Power Supply.

6 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 Power Supply. 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 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 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 Page 6 of 9 10/2013

7 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 Power Supply. 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 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

8 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 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: EEC Blank Carriers for use on EEC470 (30 x 2 pin, 15 x 3 pin, 8 x 4 pin) Order: 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

9 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. EEC 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. EEC 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 Power Supply providing variable 0-20 V d.c. 350 ma; ±15 V 300 ma; +5 V 1 A; 5, 10, 15, 20, 25 V a.c. 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: Sales: sales@feedback-instruments.com Website: Feedback reserves the right to change these specifications without notice Page 9 of 9 10/2013

multivibrator; Introduction to silicon-controlled rectifiers (SCRs).

multivibrator; Introduction to silicon-controlled rectifiers (SCRs). Appendix The experiments of which details are given in this book are based largely on a set of 'modules' specially designed by Dr. K.J. Close. These 'modules' are now made and marketed by Irwin-Desman