l/r time constants
An l/r time constant is the time required for current through a conductor to increase to 63.2% or decrease to 36.8% of the maximum current. An RL circuit is shown in Figure 19-9. L/R is the symbol used
Figure 19-10 charts the growth and decay (or in- crease and decrease) of a magnetic field, in terms of time constants. It takes five time constants to fully transfer all the energy into the magnetic field, or to build up the maximum magnetic field. It takes five full-time constants to completely collapse the magnetic field.
Questions
1. What is a time constant for an inductor?
2. How is a time constant determined?
3. How many time constants are required to fully build up a magnetic field for an inductor?
4. How many time constants are required to fully collapse a magnetic field for an inductor?
Related posts:
AUDIO AND VIDEO SYSTEMS – VIDEO DISC RECORDING AND PLAYBACK
Feedback Control Theory:Linearization Technique
Servicing methods without a schematic part4
TWO-PHASE A.C. WINDINGS
Additional Information on Copper Wire
Fuel System – Carburetor Service (part2)
Square D Company ®Norpak Control System part1
AUDIO AND VIDEO SYSTEMS - LOW LEVEL AMPLIFIERS
Programming A Plc:Circuit Operation
Basic Concepts of Static Control part3
AUDIO AND VIDEO SYSTEMS - ACOUSTICS
Electric Motor Manual – INSTALLATION METHODS - Grounding motors effectively
Wiring Methods for Lighting Circuits:Overcurrent Protective Devices
Introduction to Electric Motors