Elenco Electronics EP-130, Manual

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TABLE OF CONTENTS
Before We Begin Page 4
Installing the Batteries 4
Making Wire Connections 5
Components 5
Building Your First Project 9
Troubleshooting 10
Helpful Suggestions 10
I. ENTERTAINMENT CIRCUITS 11
1. Electronic Woodpecker 12
2. The Chirping Bird 13
3. Electronic Cat 14
4. Sonic Fish Caller 15
5. Machine Gun Pulse Oscillator 16
6. Electronic Motorcycle 17
7. Two-tone Patrol Car Siren 18
8. Electronic Siren 19
9. Electronic Metronome 20
10. Electronic Grandfather Clock 21
11. Light-controlled Electronic Harp 22
12. Horror Movie Sound Effects 23
13. Strobe Light 24
14. Rapid LED Display Switching
(persistence of vision test) 25
II. BASIC SEMICONDUCTOR & COMPONENTS CIRCUITS 26
A BIG CHANGE 27
15. Capacitor Discharge/High Voltage Generator 28
16. Capacitors in Series & Parallel 29
17. Resistors in Series & Parallel 30
18. Light Dimmer 31
19. Transistor Switcher 32
20. Transistor Circuit Action 33
21. Sound Amplifier 34
22. Flip-flop Multivibrator with LED Display 35
III. LED DIGITAL DISPLAY CIRCUITS 36
23. Seven-segment LED Digital Display Circuit 37
24. Basic LED Display 38
25. Transistor Control Switching of the LED Display 39
26. Transistor, CDS Cell, and LED Display Circuit 40
IV. A TOUR THROUGH DIGITAL CIRCUITS 41
27. Diode-Transistor Logic AND with LED Display 42
28. DTL OR Circuit with LED Display 43
29. DTL NAND Circuit with LED Display 44
30. DTL Exclusive OR Circuit 45
31. Transistor NOR Circuit with LED Display 46
32. Transistor Flip-Flop Circuit 47
33. Transistor Toggle Flip-Flop 48
V. MORE ADVENTURES WITH DIGITAL CIRCUITS 49
34. Transistor-Transistor Logic Buffer Gate 50
35. TTL Inverter Gate 51
36. TTL AND Gate 52
37. TTL OR Gate 53
38. TTL Exclusive OR Gate 54
39. TTL NOR Gate 55
40. TTL Three-Input AND Gate 56
41. TTL AND Enable Circuit 57
42. TTL OR Enable Circuit 58
43. TTL NAND Enable Circuit 59
44. TTL R-S Flip-Flop 60
45. Toggle Flip-Flop Circuit Made from NAND Gate 61
46. TTL Line Selector 62
47. TTL Data Selector 63
Important: If you encounter any problems with this kit, DO NOT RETURN TO RETAILER. Call toll-free (800) 533-2441
or e-mail us at: help@elenco.com. Customer Service • 150 Carpenter Ave. • Wheeling, IL 60090 U.S.A.
• Do not short circuit the battery
terminals.
• Never throw batteries in a fire or
attempt to open its outer casing.
• Use only 1.5V “AA” type, alkaline
batteries (not included).
• Insert batteries with correct polarity.
• Do not mix alkaline, standard (carbon-
zinc), or rechargeable (nickel-
cadmium) batteries.
• Non-rechargeable batteries should not
be recharged. Rechargeable batteries
should only be charged under adult
supervision, and should not be
recharged while in the product.
• Do not mix old and new batteries.
• Remove batteries when they are used
up.
• Batteries are harmful if swallowed, so
keep away from small children.
WARNING: Always check your wiring before
turning on a circuit. Never leave a circuit
unattended while the batteries are installed.
Never connect additional batteries or any
other power sources to your circuits.
WARNING:
CHOKING HAZARD - Small parts.
Not for children under 3 years.
Conforms to all applicable U.S. government
requirements.
Batteries:
!