Circuit & Modules Complete Collection| Page 2 of 4

PAM8403 Audio Amplifier With Volume Control

₨250.00

The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high quality sound reproduction. The new filter less architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus to save the system cost. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of class-AB cousins. It can extend the battery life, ideal for portable applications.

Features

3W Output at 10% THD with a 4Ω Load and 5V Power Supply
Filterless, Low Quiescent Current and Low EMI
Low THD+N
Superior Low Noise
Efficiency up to 90%
Short Circuit Protection
Thermal Shutdown

Add to cart Details Quick View

Sale!

10w Speaker Pair DIY Sound System

₨600.00

10w Speaker:

100% brand new and high quality
Material: Plastic, Metal
Color: Black
2 pcs LCD TV Speakers Loudspeaker
4ohm 10W Speaker
Rectangle Speaker
Wire not Soldered
70 * 30 * 16.5mm
Screw Holes Distance: 24 * 63mm
Quantity: 2Pcs

Connect Bluetooth module to the amplifier

Bluetooth module has four output pins, namely, Lout, Rout, Vcc and GND. Right channel (Rout) and left channel (Lout) are connected to pins 2 and 7 of IC2, respectively, followed by presets VR1 and VR2, and capacitors C3 and C5. Pins 3 and 6 of IC2 are connected to feedback capacitors C4 and C6, which are grounded. Bluetooth module is given a power supply of 5V DC .

Connect amplifier to speakers

Output pins 11 and 12 of amplifier IC2 are directly connected to a loudspeaker (LS2). Similar configuration is done with output pins 15 and 16 of IC2 and another loudspeaker (LS1). A capacitor in series with a resistor is connected to each wire for preventing audio signal oscillation.

The parts of a speaker are:

The cone and the dust cap (the parts that move air and produce sound)
The spider and the surround (also called the suspension, these are the parts that hold the cone in place while still allowing them to move)
The magnet and the voice coil (the parts that interact to convert electric energy into motion)
The basket
The pole and top plate
And finally the frame that mounts everything together

How do speakers work?

Speakers work by converting electrical energy into mechanical energy (motion). The mechanical energy compresses air and converts the motion into sound energy or sound pressure level (SPL).

When an electric current is sent through a coil of wire, it induces a magnetic field. In speakers, a current is sent through the voice coil which produces an electric field that interacts with the magnetic field of the permanent magnet attached to the speaker. Like charges repel each other and different charges attract. As an audio signal is sent through the voice coil and the musical waveform moves up and down, the voice coil is attracted and repelled by the permanent magnet. This makes the cone that the voice coil is attached to move back and forth. The back and forth motion creates pressure waves in the air that we perceive as sound. 10w Speaker

Add to cart Details Quick View

Sale!

PAM8403 Amplifier 3W Digital Power Audio

₨100.00

PAM8403 Amplifier Specifications:

Operating voltage: 2.5V-5.5V
Speaker With:4-8ohms recommended:4 ohms
Speaker Power :2-8W
Size:21 x 18 x 3.4mm(L x W x H)
Color:As the pics show
Net weight:1g

Application: LCD TVs, monitors, Laptop Portable Speakers Portable DVD players, game consoles Phone / speakerphone

Product Information PAM8403 Amplifier is a small digital amplifier chip, high-definition sound quality highlights the advantages of digital chips, circuit using the most reasonable peripheral configuration, power supply filtering is upgraded to 470uf (some sellers are less did not even 100uf capacitance) 1.6mm glass sheet, the real amplifier board did the most detailed, high-fidelity sound output 3W + 3W, is a rare good product enthusiasts amplifier, potentiometer using original anti-meter body, potentiometer with switch can cut off the power supply directly counterclockwise. Feature Power range: DC 2.5V – 5.5V Minimum Output: 3W * 2 Dimensions: 29.5 * 20.2 * 15mm Note please make sure the power supply is not more than 5.5V and please don't do reverse polarity for "+" and "-", or else, it will burn the board. Excellent noise suppression, in the absence of circumstances connected to input audio ear close to the speaker can not hear any noise, two-channel stereo, 5V power supply can output 3W 3W power, can directly drive 4Ω, 8Ω small speakers, the output power large, full of energy, good sound quality. The unique non-LC filter Class-D digital power board can be directly used computer USB power supply. Double panel wiring, wiring properly resolve the ground potential caused by balance and inter-channel crosstalk, ultra-miniature design, can easily be placed in a variety of digital products within a small space, high amplification efficiency. All using the whole plate welding machine, welding quality comparable non-manual soldering iron! ! ! Note: The left and right channel output of the "negative" and can not be connected together, otherwise it will burn IC, and should be preceded powered speakers connected (load). Rated working voltage 2.5 ~ 5V, limit operating voltage 5.5V.

Add to cart Details Quick View

Sale!