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Electronic buzzer circuit Needed A switch 10K resistor 0.01uf capasitor * 2 1uf/15v capasitor 8ohm 0.5W speaker 5v-15v voltage resource NE555 ic 56K resistor Now the time for making circuit What is NE555 IC The 8-pin 555 timer must be one of the most useful ICs ever made and it is used in many projects. With just a few external components it can be used to build many circuits, not all of them involve timing. A popular version is the NE555 and this is suitable in most cases where a '555 timer' is specified. Low power versions, such as the ICM7555, are available with the same pin arrangement but their maximum output current is much lower and they should only be used when specified. The 555 can be used in several circuits. Astable- producing a square wave for flashing LEDs, making sounds, driving counters etc.Monostable - producing a single pulse when triggered, this can used for timing.Bistable - a simple memory with two states.Buffer - an inverting

Motion sensor circuit simple Needed PIR motion LED 1K resister BC547 transistor 12 v battery or power pack 1N4007 diode Now the time for circuit design The led was blink when the motion detector detects some think. Motion detectors range Up to 10 meters at an angle of ± 15 degrees. The PIR (Passive-Infrared) Sensor functions in the same way as an outdoor light with a motion detector and reacts to movements made by objects that radiate heat (people and animals). The switching threshold can be set from between 0% and 100%. How the motion detector working There are two popular types of passive motion sensor. These are mostly found in residential homes. Passive infrared motion detectors (PIR) detect emitted infrared energy = given off by humans and animals in the form of heat. When there is a sudden increase in infrared energy, an alarm is sounded. Resistor working method Devices called resistors let us introduce precisely controlled amounts of resistance into e

1.5V to 50v step up perfect circuit without ic Needed Inductor 220v-470v 220K resistor 100 k resistor 1 K resistor 2N3906 transistor 2N3904 transistor 1N4148 diode Zener diode Now the time for circuit design Now you can able to do a step up circuit it can work 10 minutes only because 1.5v battery is weak. EXPLAIN Inductor use for I dont like to use inductors. Mostly because I tend to stick to digital circuits. But I’ve used them sometimes for creating filters or oscillators. And that is what they are mostly used for. Filters and oscillators. You often find inductors in analog AC electronics such as radio equipment. The inductor An inductor is just a coil of wire around some kind of core. The core could be just air or it could be a magnet. When you apply a current through the inductor, a magnetic field is created around it. By using a magnetic core the magnetic field will be much much much stronger. Inductor do The inductor

Switching circuit without transistor and resistor This is the perfect circuit for extra current switching. its just a simple idea for boost current. Now the time for see how to switch the switches. 6V=switch on S5 12V=switch on S1+S6 18V=switch on S1+S2+S7 24V=switch on S1+S2+S3+S4 Hiding voltages 9V=switch on S1+S5+S6 15V=switch on S1+S2+S6+S7 21V=switch on S1+S2+S3+S7+S4 100% working and safe circuit. Alkaline battery In an alkaline battery, the negative electrode is zinc and the positive electrode is manganese dioxide. The alkaline electrolyte of potassium hydroxide is not part of the reaction, only the zinc and manganese dioxide are consumed during discharge. High power eneloop battery One of the main features of eneloop is the higher voltage level. Many applications switch off or show the low battery signal if the voltage is lower than 1,1 Volt.  A traditional Ni-MH battery will lose its voltage constantly and runs under thi

12v 3A to 5v 3A convert Needed BD140 transister BC558 transister MJ2955 330 ohm resistor LM7805 ic 47 ohm resistor 18 ohm resistor 470 ohm resistor 0.22 ohm resistor Led Now time for circuit design follow the circuit picture below MJ2955 transistor uses The PNP Bipolar Power Transistor is designed for use in high power amplifier and switching amplifier applications. :MJ2955 transister is made in silicon meterial. :This transister's polar is PNP. :150w power dissipation (maximum collector) :100v base voltage (maximum collector) :60v emitter voltage (maximum collector) :7v base voltage (maximum emitter) :15A maximum current (maximum collector) :200 C is the maximum operating junction temperature. :4MHz transition frequency. :No noice figure. BD140 transistor :PNP transistor. :-80 voltage collector emitter. :-100v collector base voltage. :-5 voltage emitter base. :-1.5 Ampir

How to convert 220v ac to 12v dc without transformer Needed 474k/250v 820ohm 1/4w 10uf 50v 4*diodes Now follow the circuit picture This circuit for how to make a 220v ac to 12v dc without any transformer. this project can help to make low cost converter. Diode bridge is important circuit for all ac to dc converting circuit. Because diomond diode bridge can convert ac to dc .. two Diodes for AC and another two for anode and cathode (direct current) Now the time for parts explanation Zener diode working method A Zener diode is a particular type of diode that, unlike a normal one, allows current to flow not only from its anode to its cathode, but also in the reverse direction, when the so-called "Zener voltage" is reached. Zener diodes have a highly doped p-n junction. Transformer defination Electrical power transformer is a static device which transforms electrical energy from one circuit to another without any direct electrical connection an

220v ac to 5v dc converted circuit Needed 4*1N4007 diode 100 ohm 1W 470k 1W 225k/400v capasitor 470uf/100v capasitor 220ohm resistor 15v 1W diode led 10uf 25v capasitor 7805 ic 1uf 10v Now the time for circuit design This is the simplest way for converting 220 ac volts to 5v dc volts (usb current) it is use for mobile phone charger and power bank charger. Capasitor in this circuit for give smooth current. Diode in this circuit for convert ac to dc. (Diode bridge)   Capasitor in this circuit. Capacitors in DC Circuits. Capacitors do not play an important role in DC circuits because it is impossible for a steady current to flow across acapacitor. If an uncharged capacitor is connected across the terminals of a battery of voltage then a transient current flows as the capacitor plates charge up. Diode in this circuit for. Diodes can be used as rectifiers, signal limiters, voltage regulators, switches, signal modulators, signal m

How to automaticaly switch an led at the night (ldr) Needed 330 ohm resister 4.5k ohm resister 1k ohm resister 470 ohm resister bc547 transister*2 Circuit diagram How it is work The basic consept of this project is: the led was switch on when the ldr gets dark (night time). Basicaly ldr work in light (when ldr detects light the led was switch on) But this circuit is reversed (work in dark) Uses of this project You successfuly done this project And place this in a permenent place. this must work when is the power cut. What is resistor Resistor can converting electrical energy into heat. If a matirial has a high resistance, it means electricity will struggle to get through it. The more the electricity has to struggle, the more energy is wasted. That sounds like a bad idea but some times resistance is far from ''useless'' and actually very helpfull. Bc547 transistor A transistor stands for transfer of resistance, is commonly

How to switch a fan using android phone (arduino projects) Needed=arduino esp8266 shield 12E 2 channel 5v relay module          male to female jumper wire      3.7v battery Blynk Connecting method (pin congconfiguration)     arduino 5v::relay vcc           Arduino D6::relay pin 1     Arduino D7::relay pin2  Arduino GND::relay GND Now the time for coding Blynk esp8266 standalone example coding and change wifi ssid and password. Then write your auth token from blynk email correctly. Then get in your blynk application and then select your pin correctly What is blynk=blynk is a common app for arduino wifi projects. Blynk app is support for android , ios , windows operating systems. blynk app have a online server so its need data connection from your phone or wifi. What is arduino ide=arduino ide is supported operating systems are windows android ios. its use for writting coding for all arduino programming boards. Arduino and other co