Experiment Manual Electronics Learning Circuits Manual Cover.
Instruction Manual Contents Introduction Electronics The parts in your kit Tips for assembling the circuits Getting started with light-emitting diodes 1 Red light with green parts 2 Wire salad 3 Green instead of red 4 Double light 5 Morse code 6 Alternating red and green 7 Current “in line“ 8 Salt makes things conductive 9 Swap meet 10 Polarity tester 11 Improved polarity tester 12 Resistance to red 13 Resistors in a row 14 Resistors in parallel 15 All resistors in parallel Making sounds with circuits 16 Th
45 Light on, sound on 46 Light off, sound on Electricity: stored in the smallest of spaces 47 Charged with electricity 48 One-second electricity supply 49 Small charges made visible On stopwatches and timers 50 Stairway light 51 Stairway light with sound switch 52 Timer 53 Timer with sound change 54 Timer with phototransistor control 55 Light-controlled stairway light 56 First green, then red Flip-flop: a circuit with a memory 57 Alarm system with memory 58 Flip-flop with red and green 59 Optical alarm syst
The parts in your kit Component Qty. Description Battery box Item No. 704484 1 The power pack that supplies the electricity for the experiments. Before starting the experiments, you will have to install two 1.5-volt AA batteries. You can then collect current from the two terminals (+ and -). Never directly connect these terminals to each other. The batteries and wires can heat up and explode, not to mention that the batteries will be quickly used up. Selector switch Item No.
Component Qty. Description Green light-emitting diode Item No. 708802 1 It lights up green when current flows through it. Transistor (npn) Item No. 708800 2 The transistor is a fundamental electronic building block. It is hidden inside of electronic devices or computer chips, sometimes by the thousands. It serves as an amplifier or electric switch, and will play an important role in your experiments.
The parts in your kit Component Qty. Description Appearance Resistor, 22 kilohms (22 kΩ) Item No. 708808 1 This is just like the 1-kilohm resistor, except this one offers 22 times the resistance to the current. Resistor, 120 kilohms (120 kΩ) Item No. 708809 1 The same applies as with the 1-kilohm resistor, except this one offers 120 times the resistance to the current. Electrolytic capacitor, 100 microfarads (100 μF) Item No. 708810 1 Capacitors have important tasks to perform in circuits.
3 Green instead of red Science Database You performed the previous experiments with the red LED. Now it’s the green LED’s turn to shine. Atomic nucleus You will need: • Battery box • 4 X-connectors • 1 I-connector • Selector switch • Green LED Here’s how: Assemble the same circuit as in Experiment 1, except this time use the green LED. Its green light will shine as soon as you push the switch.
39 Alarm! Overflow! In factories, there are often automatic filling systems for tanks. So they need an electronic means to determine when a tank is full and to switch off the pump. And in the basement of a house, it’s useful to have an automatic monitoring system to sound an alarm when rainwater gets in. A water level sensor can handle tasks like those. You will need: • Circuit from Experiment 38 • Tape • Drinking glass • Tap water Here’s how: 1.
63 Adjustable sound pitch It can be a little bit tedious to reinsert resistors. You can use the selector switch to choose between two tone pitches. You will need: • • • • • • • • Battery box 20 X-connectors 7 I-connectors 3 L-connector 2 Transistors 120 kΩ Resistor 22 kΩ Resistor 8.2 kΩ Resistor 64 Light-controlled flasher In addition to the fixed-value resistors, you also have the phototransistor. With its help, you can use changes in external lighting conditions to adjust the flash tempo.
