555 Timer IC Viva Interview Questions and Answers
What is a 555 IC? The 555 IC is a highly stable device that can be used for generating accurate time delays or oscillations. The mode of operations and desired outputs can be obtained...
Category: Circuits
Different Types of Rectifiers – Single & Three Phase
A rectifier is an electronic circuit which converts Alternating Current into Direct Current. Based on the type of input supply, rectification and output it can be classified into different types. Single Phase Rectifier Single...
Operational Amplifier op amp Viva Interview Questions and Answers
What is an op-amp? An operational amplifier is a direct coupled high-gain electronic amplifier with a differential input to which feedback is given to control its response characteristics at its single-ended output. What is called a differential...
Rectifier viva interview questions with answers
What is a Rectifier? A rectifier is a device which converts AC (Alternating current) to DC (Direct current). Name the basic types of rectifiers? Half wave rectifier, Full wave center tap rectifier and Full...
555 Multivibrator Circuits Tutorial – Astable, Monostable, Bistable
555 Timer IC IC 555 timer IC is one of the most popular integrated circuit chip used for a variety of applications such as astable, monostable, bistable multivibrators, timer circuits, oscillators, PWM (Pulse Width Modulation), PPM...
Zener diode voltage regulator circuits
The Zener Diode Voltage Regulator is a simple, cost-effective device used in many electronic circuits to provide a desired level of stable voltage. This is achieved by the Zener diode’s unique property of maintaining...
Door opening alarm circuit diagram
A door opening alarm circuit is an indicator or a security alert device which activates while opening the device attached door. And the alarm remains ON as long as the door is kept open....
Voltage Doubler Circuit schematic using 555, op amp & AC to DC
AC to DC Voltage Doubler Circuit A voltage doubler is a circuit that produces an output voltage that is double the applied input voltage. The below diagram is an AC to DC voltage doubler...
Simple touch switch circuit using transistor, 4017, 555 IC
A touch switch is a device that operates with the touch action of an object or sensible material. It is used in hobby circuits to high-end consumer electronics for various applications. Below are a...
Audio Tone generator circuit using 555, 741 IC
A tone generator circuit can be used for various applications such as alarms, bells, indicators, etc. A tone generator consists of a square, triangle, sawtooth periodic wave generator circuits, commonly square wave generators. Such periodic signals...