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

Merits and demerits of stepper motor - stepper motor , Merits and Demerits ...

Merits and Demerits of Stepper Motor Followings  are the  merits and demerits  of stepper motors. Merits : a.They are compatible  with digital systems b.For the co

Conductivity, what is the conductive material property''s?

what is the conductive material property''s?

Define the xor gate - microprocessor, Define the XOR GATE - Microprocessor?...

Define the XOR GATE - Microprocessor? The XOR GATE is a alike to an OR gate except for the instance when all the inputs are high. With a XOR gate when all the inputs are high t

Explain the fixed bias circuit, Q. Explain the fixed bias circuit?     ...

Q. Explain the fixed bias circuit?           The Fig refers to the common emitter collector characteristics and the ac and dc load lines.The Fig shows the points Q 1 and Q 2

Find the nature of the armature voltage, Q. The flux-density distribution p...

Q. The flux-density distribution produced in a two - pole synchronous generator by an acexcited field winding is B(θ, t) = B m sin ω 1 t cos θ Find the nature of the armatur

Calculate the actual frequency response, Using the LM741operational amplifi...

Using the LM741operational amplifier build a current amplifier with the voltage gain of  |A V | = 300 v/v ± = 20% . Measure all necessary parameters of the amplifier (as per delive

Explain about register marker, Q. Explain about Register marker? Regist...

Q. Explain about Register marker? Register marker: Stronger selectors perform searching and counting . Though, the crossbar switch has no ‘intelligence'. Something external to

What is a positive clipper and explain its working, Q. What is a positive c...

Q. What is a positive clipper? Explain its action with the help of a circuit. A positive clipper is the circuit which is used to cut off the positive half cycle. The circuit wi

Emf, what is emf

what is emf

Show binary to octal conversion, Q. Show Binary to Octal Conversion? It...

Q. Show Binary to Octal Conversion? It is simple to convert from an integer binary number to octal. This is accomplished by: Break the binary number into 3-bit secti

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