NBSL TECH

                          MUSICAL DOOR BELL                      The musical door bell is the circuit in which the transistor which make an melody sound in it.It has the oscillator in it which has the capability of producing 14 indidual tones in it.The BT66/UM66 transistor is the melody sound generator circuit. Components Required:                    1)UM66/BT66 Transistor                    2)Speaker/Buzzer                    3)Dc Supply         ...

                           CONTACTLESS VOLTAGE TESTER/INDICATOR CIRCUIT                           The contactless voltage tester circuit is which indicates the presence of voltage without touching the voltage line.This is done with help of the transistors.Thus it indicates the voltage folw in the circuit. COMPONENTS REQUIRED:                                       1)BC547 transistor-2                    2)RESISTORS-1 MEGA OHM,100/10K OHM,200 OHM   ...

                  DANCING LED USING 555 & 4017 IC COMPONENTS REQUIRED:                     1)555 IC                     2)4107 IC                     3)CAPACITORS,RESISTORS                     4)LED'S                     5)CONNECTING WIRES CIRCUIT DIAGRAM: PROCEDURE:            Connect the 555 ic on the breadboard and at first connect the 4th and 8th pin with wi...

                    ARDUINO KEYPAD LOCK SECURITY SYSTEM WITH SERVO MOTOR ARDUINO:          Arduino is Basic system which is used for the controlling various system that does lots of work.The arduino develope in 2003,the arduino is basically a microcontroling unit the code return in the form 8 bit ,32 bit which is return in the language of C and C++`The RAM in arduino is SRAM. KEYPAD LOCK:                       A Keypad Lock is the microcontrolled Security System in which it can be controlled which is contolled by the keypad which is 4*4 matrix and we could be secured with that.Here is the simple project with that we can do the keypad security system. WIRING DIAGRAM: PROCEDURE:         ...

                   Traffic Light System using Arduino ARDUINO:                   Arduino is Basic system which is used for the controlling various system that does lots of work.The arduino develope in 2003,the arduino is basically a microcontroling unit the code return in the form 8 bit ,32 bit which is return in the language of C and C++`The RAM in arduino is SRAM. Traffic Light System:                       The traffic light system is which is commonly known System that is used in controlling traffic and accidents in Junction roads.Thus we are going to make this in the arduino system which is the easiest way of making the Automatic Traffic light system. Components Required:    ...

        The LDR is Generally defined as the Light Depending Resistor where,the LDR is variable photo Resistor which when light falls on it the resistivity is low and when it is in less exposure to light it have high resistance.The photo resistor may vary from from 0 to certain mega ohm.                             DARK LAMP CIRCUIT:                                        Generally the Dark Lamp Circuit is the where the Light in this Circuit glows in DARK and it when in LIGHT the LED does not glow thus the working of Dark Lamp Circuit. Circuit Diagram: Components Required:                                      1) LDR (Light Dependent Resistor)           ...

                 200 Rpm DC Motor Working And Arduino Connection                Basically a Motor is an device which converts an Electrical energy into Mechanical energy,where in case of Generator it converts the Mechanical energy into the Electrical energy.Basically a motor works under the principle of FARADAYS law who Invented the Motors in 1831.He is one of famous scientist in the history whose invention made an great Revolution.                According to in invention whenever an conductor placed in Magnetic field an EMF is produced it is known as the Induced Emf as with that principle Motors are invented.                               ...

             BLINKING LED USING 555 IC Components required:                                           1)555 IC                                           2)10k RESISTOR                                           3)10uf CAPACITOR                  ...

                         CONVERSION OF AC TO DC USING VOLTAGE REGULATOR Components Required:                                      1)Stepdown transformer                                      2)Diodes                                      3)Voltage Regulator 7805            ...