Audio Amplifier Circuit with 200W Transistor

Audio Amplifier Circuit with 200W Transistor

Revealed by: Lauren

On: 04 Jun, 2019

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Category: Schematic

Audio Amplifier Circuit with 200W Transistor Rating:
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With up to 200W delivered to audio amplifier circuit produced top-class quality for loudspeaker from 4 to 16 ohm.The frequency response is from 20 to 20000 Hz and Voltage operated between 24 and 36 V,max 5 A.


Please Highly attention ...

With up to 200W delivered to audio amplifier circuit produced top-class quality for loudspeaker from 4 to 16 ohm.The frequency response is from 20 to 20000 Hz and Voltage operated between 24 and 36 V,max 5 A.


Please Highly attention to the transistors and the IC's have been fixed and solely one or two separated cooling elements with sufficient dimensions for this purpose (thermal resistance < 1K/W).


By doing this way is necessary to mount the transistors and the IC’s insulated (with mica washes and plastic nipple). Please avoid connection between the transistors and the IC towards the cooling plate! It is of extraordinary importance with this high-power amplifier that there is a considerable heat dissipation. The already mounted cooling element should be situated in a well ventilated case.


200W Transistor Audio Amplifier Circuit

200w power amplifier circuit schematic.jpg

200w audio amplifier pcb 1.jpg

200w audio amplifier pcb 2.gif
Audio power amplifier components
IC1, IC2 = 2 IC’s TDA2030
T1, T3 = 2 transistors KT818 or BD708
T2, T4 = 2 transistors KT819 or BD705
C1, C2, C3, C4, C7 = 5 capacitors 150 nF
C5 = 1 elca 10uF 63V
C8 – 1 capacitor 1.8 nF
R1, R7, R9 = 3 resistances 100K
R2, R3, R10, R11 = 4 resistances 2.2 Ohm
R4, R5 = 2 res. 2K
R6, R8 = 2 res. 1 Ohm
R12, R13 = 2 res. 2 res. 3.3K
D1…D4 = 1N4001, 1N4002, 1N4003
1 PCB board approx 56×51 mm

200W Transistor Audio Amplifier Circuit

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