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Showing posts with the label 100W

Audio Amplifier 100W or 130W

ComponentRef./ValueTypeR1 120K 1/4W Resistor R2 3K3 1/2W Resistor
R3 5K6 1/4W Resistor
R4 3K3 1/4W Resistor
R5 680R 1/4W Resistor
R6 120R 1/4W Resistor
R7 3K3 1/4W Resistor
R8 1K2 1/4W Resistor
R9 2K7 1/4W Resistor
R10 1K5 1/4W Resistor
R11 680R 1/4W Resistor
R12 120R 1/4W Resistor
R13 120R 1/4W Resistor
R14 0,33R 5W Resistor
R15 0,33r 5W Resistor
R16 10R 1W Resistor
R17 10R 1W Resistor
C1 10uF 16V Electrolytic Capacitor
C2 330µF 16V Electrolytic Capacitor
C3 470uF 35V Electrolytic Capacitor
C4 150pF Ceramic Capacitor
C5 100nF 100V Polyester Capacitor
RV1 1K Trimpot
D1 9V1 - 500mW Zener
T1 BC557 PNP transistor
T2 BC557 PNP transistor
T3 BC548 NPN transistor
T4 BD137 NPN transistor
T5 BD137 NPN transistor
T6 BD138 PNP transistor
T7 2N3773 NPN transistor
T8 2N3773 NPN transistor
L1 coil largest number of turns rolled in R16 with AWG22

100W AF Power Amplifier

Circuit Diagram:
Datasheet for STK4044: Download

100 watt LM391 Audio Power Driver

Circuit diagram:

Datasheet for LM391: Download

100W Audio Power Amplifier with Mute

General Description: The LM4732 is a stereo audio amplifier capable of typically delivering 50W per channel of continuous average output power into a 4Ω or 8Ω load with less than 10% THD+N from 20Hz - 20kHz. The LM4732 has short circuit protection and a thermal shut down feature that is activated when the die temperature exceeds 150˚C. The LM4732 also has an under voltage lock out feature for click and pop free power on and off. Each amplifier of the LM4732 has an independent smooth transition fade-in/out mute. The LM4732 has a wide operating supply range from +/-10V - +/-40V allowing for lower cost unregulated power supplies to be used. The LM4732 amplifiers can easily be configured for bridge or parallel operation for 100W mono solutions. Circuit Diagram:

100W Digital-Amplifier Power Stage 6-Channel

Subwoofer amplifier TDA7293


Multipower BCD technology
Very high operating voltage range (±50 V)
DMOS power stage
High output power (100 W into 8 Ω
THD =10%, with VS = ±40 V)
Muting and stand-by functions
No switch on/off noise
Very low distortion
Very low noise
Short-circuit protected (with no input signal applied)
Thermal shutdown
Clip detector
Modularity (several devices can easily be connected in parallel to drive very low impedances)


The TDA7293 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications, such as home stereo, self powered loudspeakers and Topclass TV. Thanks to the wide voltage range and to the high output current capability it is able to supply the highest power into both 4-Ω and 8-Ω loads. The built-in muting function with turn-on delay  simplifies the remote operation avoiding on-off switching noises. Parallel mode is possible by connecting several  devices and using pin11. High output power can  be delivered …