Personal safety from power, Electrical Engineering

Assignment Help:

Personal  safety

Power supplies can be very dangerous. This is specifically true of high voltage circuits, but anything over 12 V must be treated as lethal potentially.

A power supply is not safe after it has been switched off. Filter capacitors can hold charge for the long time. In the high voltage supplies of good design, bleeder resistors of a high ohmic value are connected across each filter capacitor, so that capacitors will discharge in few minutes after supply is turned off. But do not bet your life on components which might not be there, and that can and do sometimes fail.

1481_personal saftey by power.png 
Figure--   A bleeder resistor, R, allows filter capacitors to discharge when a supply is shut off.

Most of the manufacturers supply safety instructions with equipment carrying hazardous voltages. But do not assume something is safe only because dangers are not mentioned in instructions.


Related Discussions:- Personal safety from power

Integrated circuit with resistive feedback, principle of resistive feedback...

principle of resistive feedback circuit change when the square wave and triangular pulse frequencies, the amplitude of the triangle wave

Define the software defined radio, Software Defined Radio (SDR) is an advan...

Software Defined Radio (SDR) is an advanced radio technology in which flexibility is achieved in using radio functions such as modulation and demodulation of radio signals are carr

Develop and execute a p spice program, Q. In the circuit shown in Figure th...

Q. In the circuit shown in Figure the switch opens at t = 0. Develop and execute a P Spice program to solve for v(t), and use PROBE to obtain a plot of v(t). Hint: Use the follo

What is segment displays, Q. What is Segment displays? Seven-segment di...

Q. What is Segment displays? Seven-segment displays are the most commonly used numeric display devices, while 10- and 16-segment (starburst) display devices are also available.

Frequency response of amplifiers, Q. Frequency response of amplifiers? ...

Q. Frequency response of amplifiers? All amplifiers exhibit variations of performance as the signal frequency is changed. The frequency response of an amplifier may be defined

Speed control of dc motor using pid, The objective of the project is to pro...

The objective of the project is to protect damage of the DC motors. If the motor is not working it will be shown with red light, if working normally then green and if working at a

Mips simulator, The coursework requires you to work in pairs to write a Jav...

The coursework requires you to work in pairs to write a Java application that will take a numerical representation of a MIPS program and simulate its execution. MIPS is a Load-S

Zener diod, what is zeenar doide and explain its working

what is zeenar doide and explain its working

What is i/o mapping, What is I/O mapping? The assignment of addresses t...

What is I/O mapping? The assignment of addresses to various I/O devices in the memory chip is known as I/O mapping.

Matlab antenna diversity, please I need help in matlab to program complex e...

please I need help in matlab to program complex expression in antenna diversity please

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd