Bc109 transistor

NPN Silicon Planar Epitaxial Transistors.
Suitable for applications requiring low noise and good hFE linearity, such as audio
pre-amplifiers, and instrumentation.


The 2N2222 is an amplifier transistors, a common NPN bipolar junction transistor (BJT) used for general purpose low-power amplifying or switching applications. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds.

Center tap transformer 6-0-6

The transformer is a static electrical device that transfers energy by inductive coupling between its winding circuit.

Center tap transformer 6-0-6 is  a general purpose chassis mounting mains transformer.It has 230V primary winding and center tapped secondary winding.The Transformer act as step down transformer reducing AC – 230V to AC – 6V.

A breadboard is a rectangular plastic board with a bunch of tiny holes in it. These holes let you easily insert electronic components to prototype an electronic circuit, like this one with a battery, switch, resistor, and an LED (light-emitting diode).

Ldr photo cell

Light Sensors are photoelectric devices that convert light energy (photons) whether visible or infra-red light into an electrical (electrons) signal.

The CdS photocell is a very low cost device often used in auto dimming, darkness or twilight detection for turning the street lights “ON” and “OFF”, and for photographic exposure meter type applications.
Wire male to male 

This Jumper wire is used in connecting a female header pin of any development board (like Arduino) to another development board or breadboard.Also it can be combined with a Female jumper wire to create Male to Female jumper wire.

Diode 1N4001

A diode is a two-terminal component that allows the flow of current only in a single direction from the Anode to the cathode.

The 1N4001 diode belongs to the family of the 1N400x diode series, which are most commonly used in household electronic appliances. It allows the flow of current only in one direction, that is from anode terminal to cathode terminal just like a normal diode. It is referred to as a general-purpose rectifier diode used for rectification purposes


Diode 1N4148

Diode 1N4148 is a standard silicon switching signal diode.

 This diode is applicable where fast switching is required, so it is known as a switching diode. The main functionality of this diode is the same as a normal switch. It  has high resistance under a fixed voltage whereas It has low resistance above the fixed voltage.


2.2uF 50V Capacitor

The 2.2uF 50V capacitor is a good quality radial polarized Electrolytic capacitor.
Electrolytic capacitors are widely used in switched-mode power supplies, DC-DC converters, and power supplies. This capacitor has a long life, low leakage current, and wide operating range.

1000uF  25V Capacitor

This Capacitor is used for smoothing out, filtering and performance tuning low frequency circuits and signals up to around 1KHz or less.

It has a maximum voltage of 25V DC, and can operate at a temperature rating of up to 85°C

Relay 6 VDC

Relays are switches controlled by electrical power.The purpose of a relay is to automate this power to switch electrical circuits on and off at particular times.It also provides the ability to switch multiple circuits, including different voltage types, within the same relay at the same time.

A 6v Relay basically allows a relatively low voltage to easily control higher power circuits.


Resistors 22K ohm

In electronic circuits, resistors are used to limit current flow ( and so to lower voltage levels ) to adjust signal levels, bias active elements, and terminate transmission lines among other uses

These resistors are carbon film axial lead through hole type and can handle up to 1/4W of power at voltages up to 350V. They have a color code of ( Red / Red / Orange / Gold )

pot 100K ohm

It is an audio taper control pot for electric guitar and bass. For use with active EQ and preamp systems. Compact size for use in small control cavities.

Indicator Lamp Light 220V

pilot lamp only uses LED lamp as the light source. The advantage has long life, gentle weight, small cubage, save energy, and its work on 220V