What is a leakage current device?
Table of Contents
What is a leakage current device?
Equipment Leakage, commonly referred to as earth leakage or ground fault, is an unintentional electrical connection between an energized conductor and “ground”. After the leakage is detected, an interconnected overcurrent device trips open the faulted circuit. …
Which of the transistor current is always the largest?
emitter current
The emitter current IE is always the largest one. The base current IB is always the smallest. The collector current IC and emitter current IE are relatively close in magnitude.
Why do leakage currents occur?
The leakage current in equipment flows when an unintentional electrical connection occurs between the ground and an energized part or conductor. The leakage in devices is largely due to the imperfections in the insulators or materials that make the component such as the semiconductors and capacitors.
What is the smallest current in BJT?
base current IB
The base current IB is always the smallest. The collector current IC and emitter current IE are relatively close in magnitude. 7. Why silicon type transistors are more often used than germanium type?
Why transistor is called bipolar?
Whereas a field-effect transistor is a unipolar device, a bipolar transistor is so named because its operation involves two kinds of charge carriers, holes and electrons. Therefore, if the emitter and collector terminals are reversed, a bipolar transistor has a much lower hFE and does not function as intended.
Which of the following current in a BJT is also called leakage current?
Which of the following currents in a BJT is also called leakage current? Explanation: Leakage current in BJT is represented by ICO, which is due to the flow of minority carriers in the transistor.
What is Icbo and ICEO in transistor?
ICEO is the reverse leakage current in the common-emitter configuration of BJT when the base is open. ICBO is the reverse leakage current in the common-base configuration of BJT when the emitter is open.
Where do leakage currents go?
Ideally, the current leaking from the power supply unit should flow through the ground connection and into the installations earth ground. Leakage current in laptops or devices using two pin plugs is mostly through the signal cables connected to other grounded or ungrounded equipment such as printers.