2 X 40 Watt STK amplifier

Components of the above is one component of ic which is applied as a reinforcement. Power amplifier used in an audio signal in order to become more powerful and can be heard via a tool that is the speaker. But in each set must have a voice amplifier, voltage, power quality is different.
For the IC has the output power above 2 X 40 Watt with 8 Ohm output impedance. Supply voltage ranging from 18 Volt to 32 Volt.

Part List

Resistor

R1_____1K

R2_____1K

R3_____22K

R4_____22K

R5_____1K2

R6_____100K

R7_____560R

R8_____1K

R9_____1K

R10____470R

R11____4R7

R12____3K3

R13____3K3

R14____4R7

R15____470R

R16____100R

R17____100K

R18____1K2

Capacitor

C1_____470pF

C2_____470pF
C3_____4u7F
C4_____4u7F
C5_____82pF
C6_____82pF
C7_____47uF
C8_____100uF
C9_____10nF
C10____39pF
C11____100nF

C12____47uF

C13____47uF

C14____100nF

C15____39pF
C16____10nF
C17____100uF
C18____47uF

Intregated Circuit

U1_____STK4773 , STK4793 , STK4803 , STK4813 , 4833 , 4843 , 4853 , 4863 , 4873 , 4893 , 4913.

On every IC that I mentioned has a different power output.

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2 3 Watt Low audio power amplifier

These amplifiers using IC KA2202 and KA2207, which has a power output of 2.3 Watt berimpedansi 4 ohms. Minimum supply voltage and maximum 5Volt 20Volt. See schematics and component list below.

Part List 

R1 = 100K

R2 = 56R

R3 = 56R

R4 = 1R

Use 1/4 Watt resistor

C1 = 100uF

C2 = 100uF

C4 = 100uF

C5 = 470uF

C6 = 100nF

C7 = 470pF
C8 = 2,2nF

C9 = 100uF

U1 = KA2202 , KA2207

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Dual 20 Watt Audio Power Amplifier

Overture Audio Power Amplifier Series Dual 20-Watt Audio Power Amplifier with Mute and Standby Modes

The LM1876 is a stereo audio amplifier capable of delivering typically 20W per channel of continuous average output power into a 4 or 8 load with less than 0.1% THD+N.

Each amplifier has an independent smooth transition fade-in/out mute and a power conserving standby mode which can be controlled by external logic.

The performance of the LM1876, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, places it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks.

Circuit Diagram

Dual 20-Watt Audio Power Amplifier Circuit Diagram

Key Specification

THD+N at 1kHz at 2 x 15W continuous average
output power into 4 or 8:	0.1% (max)
THD+N at 1kHz at continuous average
output power of 2 x 20W into 8:	0.009% (typ)
Standby current:	4.2mA (typ)

Applications

High-end stereo TVs

Component stereo

Compact stereo

Features

SPiKe protection

Minimal amount of external components necessary

Quiet fade-in/out mute mode

Standby-mode

Isolated 15-lead TO-220 package

Non-Isolated 15-lead TO-220 package

Wide supply range 20V - 64V

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