Aid and Trade

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Learn the basic principles of electricity/electronics, physics and magnetism. 75 Different experiments you can build. Projects include burglar alarm, light dimmer, touch switch and much more. Build an electronic project. Identify electronic parts. Read schematic diagrams. Learn how the electronic project operates. Projects you can build. Basic semiconductor and component circuits. 1. Resistors in series and parallel. 2. Switching circuit. 3. Comparator . 4. Window comparator. 5. Winking leds. 6. Light dimmer. 7. Strobe light. 8. Constant current circuit. 9. Schmitt trigger circuit. 10. Capacitor in series and parallel. 11. Rc oscillator. 12. Constant voltage circuit. 13. Touch switch. 14. Low-pass filter. 15. Summing amplifier. 16. One shot led. Entertainment circuits. 17. Electronic siren. 18. Electronic cat. 19. Electronic metronome. 20. The chirping bird. 21. Machine gun pulse oscillator. 22. Pencil lead organ. 23. Sound light. 24. Two-tone patrol car siren. 25. Daylight early bird. 26. Intermittent alarm generator. 27. Electronic wood pecker. 28. Rain drop. 29. Photo variable oscillator. 30. Sound machine. 31. Voltage controlled oscillator. 32. Power amplifier. The world of digital electronics. 33. Transistor and gate circuit. 34. Transistor or gate. 35. Transistor nond gate. 36. Transistor nor gate. 37. Transistor flip-flop circuit. 38. Timer led. 39. Bistable. Multivibrator. 40. Reset/set flip-flop. 41. Op amplifier and circuit. 42. Op amplifier or circuit. 43. Op amplifier three input nand gate. Electronic application circuits. 44. Pulse width modulation. 45. Motion detector. 46. Burglar alarm. 47. Shot in the dark. 48. Water level alarm. 49. Photo alarm. 50. Timer buzzer. 51. Sound alarm. 52. Photo level alarm. 53. Four step water level indicator. 54. Four level photometer. 55. Electronic candle. 56. Motion led. 57. Light dimmer by pulse control. 58. Sound sensor timer. 59. Logic tester. 60. Conductivity tester. 61. Voltage detector. 62. Electronic coin toss. 63. Intermittent light. 64. Two-stage timer led. 65. Dc-dc converter (negative). 66. Two-stage timer sound. 67. Sound level meter. 68. Dc-dc converter (negative). 69. Optical volume. 70. Quick draw. 71. Saw tooth wave oscillator. 72. Marching leds. 73. Electronic organ. 74. First aid siren. 75. Falling bomb sound. No tools or soldering required!. These electronic science labs will teach you about electronics from a-z. With these all-in-one labs, youll learn about electronic parts, how to read schematics, and wiring diagrams. All this while building up to 500 different projects. These kits use spring method: simply slip pre-cut wires and components into special springs for a safe, secure connection.