Tricky but Easy Electrical Engineering!
Definition: AC Voltage Controller is a thyristor based device which converts fixed alternating voltage directly to variable alternating voltage without a change in frequency. AC Voltage Controller is a phase-controlled device and hence no force commutation circuitry is required. Natural or line commutation is used. Phase control means that the phase relationship between the start … Read more
Step-down cycloconverter is a device which steps down the fixed frequency power supply input into some lower frequency. It is a frequency changer. If fs & fo are the supply and output frequency, then fo < fs for this cycloconverter. The most important feature of step-down cycloconverter is that it does not require force commutation. … Read more
This article explains the Octal Number System. Method to convert decimal to octal and octal to decimal number has also been explained with example. What is Octal Number System? A number system which uses only eight digits viz. 0, 1, 2, 3, 4, 5, 6 to 7 is called Octal Number System. The base or … Read more
To convert binary into decimal, each bit of the binary number is first multiplied with 2(n-1) where n is the position of the particular bit when counted from Least Significant Bit (LSB). The result so obtained are then added to get the equivalent decimal number. We will discuss the entire process / method of converting … Read more
An easy method of converting a decimal number into binary number is by dividing the decimal number by 2 progressively, until the quotient of zero is obtained. The binary number is obtained by taking the remainder after each division in the reverse order. This method to convert decimal number into binary number is popularly known … Read more
A single phase to single phase cycloconverter is a type of cycloconverter whose input & output are single phase AC. The basic function remains the same i.e. frequency changing. A single phase to single phase cycloconverter may either be mid-point type or bridge type step-up or step-down cycloconverter. In this article, we will understand the … Read more
Step-up cycloconverter is a single phase to single phase device which converts input AC power at one frequency to output power at a different frequency. The output frequency is more than the input frequency for this cycloconverter. Single phase to single phase means that both the input power and output power are single phase. This … Read more
Definition: Cycloconverter is a device which converts input power at one frequency to output power at a different frequency with only one stage conversion. It is also known as cycloinverter. A cycloconverter (CCV) is basically a one-stage frequency changer. Here, one stage conversion means that input AC supply is directly converted to variable frequency output … Read more
This article explains the 120° mode inverter with the help of relevant circuit diagrams, output waveforms. Formulas for phase and line voltage & merits and demerits of 120° Mode inverter over 180° mode inverter has also been explained. For 120° mode inverter, each thyristor conducts for 120° of a cycle. Like 180° mode, 120° mode … Read more
This article outlines the definition and working principle of three phase bridge inverter. 180 degree conduction mode of operation, formula for phase & line voltages of three phase inverter is also explained in this article. A three phase bridge inverter is a device which converts DC power input into three phase AC output. Like single … Read more