Definition
A resistor connected across the output of a power supply, or across a capacitor, that provides a controlled path for current to drain stored electrical charge after the equipment is switched off. It also helps stabilize output voltage under varying load.
Plain English
A small electrical part fitted across a power supply or capacitor that slowly drains away leftover electricity after the power is turned off, so the circuit is safe to touch and the voltage stays steady while in use.
Context Anchor
Seen in aircraft electrical and avionics maintenance, especially around power supplies, radios, and circuits that contain capacitors.
Derivation
From 'bleed,' meaning to let something drain off slowly. The resistor 'bleeds' stored electrical charge out of a capacitor, much like bleeding pressure out of a hydraulic line.
Why Pilots Care
It reduces shock hazard and allows safe access to circuits during inspections or repairs.
Analogy
It is like a small drain left open in a tank so the tank slowly empties after the main valve is shut.
Intuition Check
A bleeder resistor is not an unwanted electrical leak. It is an intentional part that drains stored electrical energy safely.
Example Sentence 1
The bleeder resistor across the capacitor discharges it within a few seconds of the avionics being shut off.
Example Sentence 2
A failed bleeder resistor left residual voltage in the circuit and delayed the avionics inspection.