Wednesday 8 May 2013

Science Working Models

1 comment:

  1. Hey! If you are a class 12 student and looking for physics investigatory projects, do not miss CoolJunk DIY(do-it-yourself) physics kits: www.cooljunk.in/physics-project-kits

    Using step-by-step visual instructions & detailed theory manual, you can make your physics investigatory project within hours & score 100% marks in practical. Here is the list of topic based projects for class 12:

    1. Verification of Kirchhoff Laws and Ohms Law
    2. Variable Resistors: Potentiometer, Preset & LDR: Sequential glowing of LEDs, Internal structure of potentiometer/preset, Working of LDR
    3. Capacitors-Charging and Discharging With Resistors & Time Constants
    4. Relay & Electromagnetism- Burglar Alarm, Alternate Switching, Oscillator
    5. Diode- VI Characteristics & Working, Low Resistance Path, Protection Device
    6. OR and AND Digital Logic Gates using Diodes
    7. NOR and NAND Digital Logic Gates using Diodes
    8. Zener Diode- Working & Reverse Breakdown Voltage, Voltage Regulator
    9. Transistor as Amplifier & Switch: Cut-off, Active & Saturation Regions
    10. Touch Activated Switch (Passing current through body) using a Transistor
    11. Darlington Pair (Multi-stage amplifier using transistors)
    12. Automatic Night Lamp using transistor and LDR
    13. OR and AND Logic Gates using Transistors
    14. NOR and NAND Logic Gates using Transistors
    15. NOT Gate (Transistor as an Inverter)
    16. LED Blinker (or Flasher) using a Transistor
    17. H-Bridge (Motor-driving circuit used in robotics) using transistors
    18. DC Motor: Studying relation between RPM and Voltage
    19. Wheatstone Bridge: Calculating the unknown resistance using two fixed resistors and a variable resistor (potentiometer)
    20. Full-wave Bridge Rectifier (Using diodes and a 12V AC transformer)
    21. Full-wave rectifier using diodes and a center-tapped 12V AC transformer
    22. Joule Thief: Drawing energy from a dead cell using an inductor
    23. IR (Infrared) Security or Intrusion Alarm System
    24. Temperature Sensor using a thermistor

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