Load Current vs Bleeder Current: What's the Difference?

Click For Summary
SUMMARY

Load current refers to the current that originates from a voltage or current source and flows through a load, while bleeder current is a small current used to keep capacitance discharged, particularly in high voltage DC circuits. Both load current and bleeder current are classified as branch currents, but they serve distinct functions within electrical systems. Load current is associated with operational devices like light bulbs and appliances, whereas bleeder current is linked to safety mechanisms in power supplies, such as bleeder resistors that discharge capacitors to prevent electric shocks.

PREREQUISITES
  • Understanding of electrical circuits and branch currents
  • Knowledge of voltage and current sources
  • Familiarity with capacitors and their discharge mechanisms
  • Basic concepts of power supply design and safety features
NEXT STEPS
  • Research the role of bleeder resistors in high voltage DC circuits
  • Learn about the design and function of power supplies in electronic devices
  • Explore the differences between series and parallel circuits in electrical systems
  • Study safety protocols for handling capacitors in electrical engineering
USEFUL FOR

Electrical engineers, electronics hobbyists, and anyone interested in understanding the distinctions between load current and bleeder current in electrical systems.

asdf1
Messages
734
Reaction score
0
i'm a little confused about the definition of a load current and bleeder current~ what's the difference between them?
 
Engineering news on Phys.org
It would help us to answer your question if you described the context of your question, including web URLs if possible. Load current usually would refer to the current that is originated in a voltage or current source, which flows through a load. Bleeder current usually is used in the context of a small current that is used to keep a capacitance discharged.
 
load current and bleeder currents are both branch currents right? if they're both branch currents, shouldn't they be the same thing?
 
asdf1 said:
load current and bleeder currents are both branch currents right? if they're both branch currents, shouldn't they be the same thing?

Among many things an electrical load in ones home may be a light bulb. It is typically on a different branch circuit than a clothes washer. If there are 20 circuit breakers in your home's main breaker panel, your home has 20 branch circuits. Your computer's power supply may have (probably not) high value bleeder resisters across some large capacitors. When the power supply is turned off the bleeder resistor discharges the capacitor. The discharged capacitor cannot then shock anyone. Bleeder resistors are generally used in high voltage DC circuits. The 12volt DC rail in the computor may feed the motherboard and a disk drive. These would be loads connected in parallel, not banch circuit loads.
 

Similar threads

  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 26 ·
Replies
26
Views
3K
  • · Replies 15 ·
Replies
15
Views
3K
Replies
19
Views
2K
  • · Replies 13 ·
Replies
13
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 8 ·
Replies
8
Views
6K
  • · Replies 52 ·
2
Replies
52
Views
9K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 16 ·
Replies
16
Views
5K