What Sets a Current Pulse Apart from a DC Circuit?

Click For Summary
SUMMARY

A current pulse is characterized by a rapid transition from 0A to 10A, maintained for 200 microseconds, before returning to 0A. This differs from a DC circuit where a switch is closed for the same duration, as the current pulse is a transient phenomenon. Generating a clean current pulse of 200 microseconds is more effectively achieved using digital switches rather than analog switches. In the context of a circuit with a 0.01H inductor and a 100 Ohm resistor, the assumption is made that the inductance is negligible during this short time frame, allowing the current to remain constant at 10A.

PREREQUISITES
  • Understanding of current pulse characteristics
  • Knowledge of analog and digital switches
  • Familiarity with inductance and its effects in circuits
  • Basic circuit analysis involving resistors and inductors
NEXT STEPS
  • Study the behavior of current pulses in electronic circuits
  • Learn about the differences between analog and digital switching techniques
  • Investigate the impact of inductance on transient responses in circuits
  • Explore circuit simulation tools for analyzing current pulse behavior
USEFUL FOR

Electrical engineers, circuit designers, and students studying transient circuit behavior will benefit from this discussion, particularly those interested in current pulse generation and analysis.

Gear300
Messages
1,209
Reaction score
9
A current pulse exists, in which the current jumps from 0A to 10A, stays at 10A for 200 microseconds, then drops from 10A to 0A. What makes a current pulse different from the current that runs when a switch in a DC circuit is left closed for 200 microseconds...is it the same concept?
 
Physics news on Phys.org
A current pulse is a current that runs for a short time. Closing a switch in a DC network for a short time will likely produce a current pulse. Getting a clean pulse with length 200 microseconds with an analog switch is rather hard, and a current pulse of this length is better generated with a digital switches.
 
Oh...so let's say that a current pulse for 200 microseconds existed...could we take it that inductance is negligible? The problem I was doing involved a partial branch of a circuit with a .01H inductor parallel to a 100 Ohm resistor. It stated that a current pulse existed, in which it jumped from 0 to 10 Amps, stays for 200 microseconds, then drops to 0A (these values are for the current before the junction). The problem asked me to come up with a function of time for the current through the inductor for that period of 200 microseconds, but to come up with the answer they gave, we have to assume that the current before the junction is unaffected by the inductor (remains 10A for that period)...also, the rate at which the current jumps and drops is almost a straight vertical line...it was as if the phenomenon of inductance was completely neglected; so I was assuming this might be a little different from simply closing a DC circuit for 200 microseconds.
 
Last edited:

Similar threads

Why do the headlights on the car become dim when the car is starting?
  • · Replies 4 ·
Replies
4
Views
2K
Determining Inductance L in an LC Circuit
  • · Replies 5 ·
Replies
5
Views
2K
What's the current from this circuit? Is it a short circuit or not?
  • · Replies 11 ·
Replies
11
Views
2K
Mechanisms Involved When Charging a Battery
  • · Replies 10 ·
Replies
10
Views
2K
Circuit with potential difference across battery being zero?
  • · Replies 3 ·
Replies
3
Views
2K
Pulse repetition frequency ultrasound confusion
  • · Replies 7 ·
Replies
7
Views
3K
Solving Partial Circuit: Determine Current as Function of Time
  • · Replies 16 ·
Replies
16
Views
8K
Why a 20 Ohm lightbulb won't light up in a closed circuit?
  • · Replies 7 ·
Replies
7
Views
2K
High-energy LC oscillatory discharge: what kind of switch?
  • · Replies 19 ·
Replies
19
Views
2K
Analyzing Bridge Circuit w/ Loop Currents
  • · Replies 6 ·
Replies
6
Views
2K