Tech Beck

  What is microphone? | how it’s works?   HELLO FRIENDS.   Microphone   It is a transducer that converts sound to an electrical audio signal . It consists of two metal plates separated by granules of carbon. One plate is very thin and faces outward, acting as a diaphragm . When sound waves strike this plate, the pressure on the granules changes, which in turn changes the electrical resistance between the plates.   Please note the MIC is polar, The wire which is connected to its outer cover is negative.   As name suggest condenser means capacitor, an electronic component which stores energy in the form of an electrostatic field. The term condenser is actually obsolete but has stuck as the name for this type of microphone, which uses a capacitor to convert acoustical energy into electrical energy. Hey it’s   TECH BECK. PLEASE SUBSCRIBE US ON YOUTUBE :- https://www.youtube.com/channel/UCbpM--NrLZAcb6WpUAw74OA/featured?...

  What is reed switch? | how reed switch works? HELLO FRIENDS.   Reed Switch   The reed switch is an electrical switch operated by an applied magnetic field .   CONSTRUCTION:- It consists of a pair of ferromagnetic contacts on iron metal reeds in a sealed glass envelope. When a magnet comes near to this switch, it magnetize the iron reeds and come together to make a contact. This temporary contact works as a switch. The moment magnet moves away, the switch turns Off and contacts are separated.   SYMBOL   Hey it’s   TECH BECK. PLEASE SUBSCRIBE US ON YOUTUBE :- https://www.youtube.com/channel/UCbpM--NrLZAcb6WpUAw74OA/featured?view_as=subscriber   For Business enquiries:- Email:- techbeck14@gmail.com   FOLLOW US:- INSTAGRAM:- https://www.instagram.com/techbeck14/ FACEBOOK:- https://www.facebook.com/TECH-BECK-101050225009186/?modal=admin_todo_tour   BACK TO TECH.   THANK YOU ...

What is relay ? | how relay works ?   HELLO FRIENDS.   Relay   A relay is an electrically operated switch. Relays use an electro magnet to operate a switching mechanism mechanically . Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits)   You can see the schematic diagram of a relay and an image of a real relay below.   NC —Normally Closed, NO —Normally Open. A     and   B   should be connected to battery or a DC source.   NO   NC   & COMMON, is a switch (SPDT). A & B   are the two terminal of coil (which is used as electro-magnet). When supply is given to A & B coil works as magnet and pull the shaft to switch (NC to OPEN, & NO to CLOSE) as switch do. Relay comes in variety of ratings and sizes , Generally a 5volt relay, 240VAC/ 7Amp is enough for a hobbyist. As it...

What is LDR ? | How LDR works ?   ANSWER THIS QUESTION:- From which material LDR is made ?     HELLO FRIENDS.   Light Dependent Resistance A Photo resistor or Light Dependent Resistor (LDR) is a resistor whose resistance decreases with increasing incident light intensity. When Light falls on it, Its resistance becomes low and in dark its resistance is high. It come in range for ex:- 5k, 10k, etc. & also watts.   SYMBOLS:-   USES:- Projects like:- Automatic street light. Morning alarm. And many more.   Hey it’s   TECH BECK. PLEASE SUBSCRIBE US ON YOUTUBE :- https://www.youtube.com/channel/UCbpM--NrLZAcb6WpUAw74OA/featured?view_as=subscriber   For Business enquiries:- Email:- techbeck14@gmail.com   FOLLOW US:- INSTAGRAM:- https://www.instagram.com/techbeck14/ FACEBOOK:- https://www.facebook.com/TECH-BECK-101050225009186/?modal=admin_todo_tour   BACK TO TECH.   T...