Carbon and Tungsten Lamps

5D20.30A | Ca5
Catalog: 
5D20.30A
Location: 
Ca5
Room: 
PS F175
Quantity: 
1
Instructors: 
Ortiz, Sankey, Chamberlin
  • Main component. Voltage and amp meters are connected where indicated.
    Main component. Voltage and amp meters are connected where indicated.
  • Equipment layout. Different meters can be used to meet presentation demands.
    Equipment layout. Different meters can be used to meet presentation demands.
  • The tungsten lamp begins to glow first.
    The tungsten lamp begins to glow first.
  • The carbon lamp gives off less light than its tungsten counterpart (disconnected
    The carbon lamp gives off less light than its tungsten counterpart (disconnected here).
  • A graph of voltage versus the current for both bulbs.
    A graph of voltage versus the current for both bulbs.
Safety: 
Use extreme caution, demo operates at regular line potentials and currents.
Date Added: 
Thursday, August 8, 2002 - 12:00am
Description: 

Compares the resistances of a tungsten and a carbon filament lamps at various voltages.

Instructions: 

Gradually raise the voltage to the bulbs, pausing periodically to record current and voltage readings.

Purpose: 
Measure the current and resistance at various voltages for a carbon and tungsten bulb.
Parts: 


Lamp unit
variable transformer (Df3)
voltage and current meters for use with either cameras or overhead projectors(Df4).