Voltage Stabilizer for very low ac input

This circuit describes AC voltage stabilizer ,/ automatic voltage regulator function  with its input voltage range from AC 120 to 260V, at output voltage of AC 220 ( 1 ± 10%) V, Output power for this can be 300-1000W depending upon the transformer used. Working:- AC voltage regulator circuit forms the power circuit with transformer and the voltage detection control circuit , as shown in Figure above . Voltage sensing circuit consists of four operational amplifiers formed out of an integrated circuit IC (Nl-N4),operating in comparator mode. Resistor, R7, capacitors C4, a potentiometer P, relay Kl-K4, are other sections of the circuit. . R7, RP, VD5, VD6 with C4 are for input voltage sensing circuit. Power supply for the circuit consists of series capacitor Cl, C2, resistor Rl, a bridge rectifier diode VDl-VD4, a  filter capacitor C3,a zennor regulator diode…

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Microcontroller simplified for beginners

Microcontroller is an electronics word ,the very name of which puts off oldtimers of electronics hobbyists thinking that it is a very high tech item and they would not be able to understand much.Knowledgeable people in this area deliberately make it so with high sounding words like Atmel 8051, PIC, Arduino, Raspberry Pi  with still scaring words like assembly/C/C++ programming,data structure, Python,compiler , execution etc.These are actually  misnomer and as simple as switching on/off a lamp which any school child can understand with proper guidance.  To start with let me first deal with so called 8051 microcontroller in the simplest possible way. Pls watch the video link .

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