Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
INVERTER TYPE POWER SOURCESFor site welding and repair applications, a need was felt for long time to have light weight arc welding power source. Even though, a petrol driven rotary converter is portable, the weight is considerable and it produces lot of noise and smoke. Where power connection is available a simple rectifier type may do the job but not always. For example, for remote and elevated level welding, it is highly inconvenient to drag heavy welding cables and the cost of long welding cables is also high. Therefore to avoid these problems a new type of power source has been developed. This is called inverter type. A schematic is shown in Fig. The weight and size reduction is achieved by using a HF step down transformer, to produce necessary arc voltage. Transformer size and weight are inversely related to the frequency of operation. A Normal 50 Hz step down welding transformer is bulky and heavy because the frequency is low. If the frequency is increased to say 5 to 10 kHZ, then the transformer (made of ferrite cores) size and weight are drastically reduced. This is the principle behind inverter type power sources. Input voltage is directly rectified and is fed to a inverter circuit. The inverter circuit may be made of either thyristors or transistors. The inverter circuit generates HF AC (5 to 10 kHz) and the voltage is step down by a HF transformer. The transformer output is rect ified to give DC output . The inverter circuit can be easily controlled in a closed loop manner to give the desired output characteristics.
Swing Arm Shock Absorber : This type of suspension is used to serve for rear part of motorcycle. The advantage of this type of suspension is that large deflections are absorbed.
how we made parts of engine
derive an expression for range along iclined palne
Why is the quality of welds produced by submerged arc welding very good#Minimum 100 words accepted#
How can i change the normal function block parameter[1 1]=>(s+1) to (s-1)?
Explain Atmospheric Pressure (P atm ) Atmospheric Pressure is the pressure exerted by atmospheric air on any surface. It is calculated by a barometer. The standard values of it
There are various refrigeration systems employing various methods. State any seven (7) refrigeration systems, mention the method(s) employed to attain low temperatures, and state a
please help me with this project
TYPES OF TOOL AND EQUIPMENT: We can classify the required tools and equipment into following four categories to understand their uses : General tools, Measuring equipm
crowning of pulley
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd