PART 1

Some Basic Ideas and Components

PART 2

Operational Amplifiers and Digital Electronics

PART 3

Circuit Number

Two Transistor Radio

1

LED Flasher

2

Relay Driver

3

Sound Operated Switch

4

Infra-Red Switch

5

Low Power Amplifier

6

Simple Alarms

7

Long Duration Timer

8

"Person Counter"

9

I.R. Headphone System

10

Stepper Motor Driver

11

Optically Isolated Triac Driver

12

Combination locks

13

Reaction Timer

14

Sound to Light

15

10 Watt Power Amplifier

16

Triac Light Dimmer

17

Stroboscope

18

Appendix 1
Fault Finding

Appendix 2
Resistor/Capacitor Colour Code

Appendix 3
Pin Connections

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