Elenco Electronics K-26 Скачать руководство пользователя страница 7

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QUIZ

1. The Metal Detector basic circuit is an ___________.

2. The Metal Detector transmits in the ___________ radio band.

3. The frequency of the oscillator changes when brought near ___________.

4. The LC circuit is the ___________ of the oscillator.

5. All LC circuits have a ___________ frequency.

6. An LC circuit has a coil and a ___________.

7. An inductor can be made by winding some wire into a ____________.

8. If part of the energy in the LC circuit in Figure 1 is fed to the emitter of Q1, the circuit will ___________.

9. When the radio and Metal Detector oscillators are at the ____________ frequency, the radio will be quiet.

10. Iron causes the LC circuit to oscillate at a _____________ frequency.

Answer

1.oscillator

;2.

AM;3.

metal;4.

heart;

5.resonance;

6.capacitor

;7.

coil;8.

oscillate;9.

same;10.

low

Содержание K-26

Страница 1: ...reserved Revised 2003 REV D 753226 No part of this book shall be reproduced by any means electronic photocopying or otherwise without written permission from the publisher METAL DETECTOR KIT MODEL K 2...

Страница 2: ...1 S1 Switch 541102 1 Solder Roll 24 551124 1 B1 Battery Snap 9V 590098 1 Wire 26 Enamel 45 846000 1 Resistor Transistor Capacitor PARTS IDENTIFICATION Switch Discap Battery Snap Trim Pot IDENTIFYING...

Страница 3: ...illate at the LC resonance frequency By varying P1 the current through transistor Q1 will change thus forcing the frequency of the oscillator to change slightly Figure 1 C1 C2 R2 R1 B1 S1 Q1 P1 L1 THE...

Страница 4: ...mponent Lead Solder Soldering Iron Drag Foil 1 Solder all components from the copper foil side only Push the soldering iron tip against both the lead and the circuit board foil 2 Apply a small amount...

Страница 5: ...Coil see Figure B C2 0015mF Capacitor 152 S1 Switch B1 Battery Snap Install the red wire into the positive hole and the black wire into the negative hole Solder and cut off the excess leads R2 4 7kW 5...

Страница 6: ...bridge with your soldering iron 2 Be sure that all components have been mounted in their correct places a Use a fresh 9V battery b Be sure that the coil is soldered properly The two ends of the wire...

Страница 7: ...n LC circuit has a coil and a ___________ 7 An inductor can be made by winding some wire into a ____________ 8 If part of the energy in the LC circuit in Figure 1 is fed to the emitter of Q1 the circu...

Страница 8: ...ElencoTM Electronics Inc 150 W Carpenter Avenue Wheeling IL 60090 847 541 3800 http www elenco com e mail elenco elenco com...