LM391N-100 2X50W Amplifikatör

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DEVRE ELEMANLARI :
Dirençler:
R1, R1', R4, R4' = 4,7k
R2, R2', R5, R5', R6, R6', R9, R9', Rx=100k,
R3, R3' = 47k
R7, R7', R8, R8', R15, R15', R16, R16', R17, R17' = 1k
R10, R10', R11,
R11 ' = 100 Ohm
R12, R12', R13, R13'= 0,15 Ohm/3W
R14, R14'= 10 Ohm/1 W (karbon direnç)
R18, R18' = 1 Ohm/1 W (karbon direnç)
P1, P1' = 10k trimpot.

Kondansatörler : C1, C1' = 4,7uF/16V
C2, C2' = 1uF/63V
C3, C3', C6, C6' = 10uF/63V
C4, C4', C7, C7'=4,7pF
C5, C5', C10, C10', C13, C13', C14, C14' = 100nF,
C8, C8', C9, C9', C11, C11' = 1nF
C12, C12'=47nF

Yarıiletkenler : IC1,IC1 ' = LM391 -60 veya LM391 -80
T1, T1 ' = BD139, T2, T2' = BD140
T3, T3' = MJE2955 veya TIP2955
T4, T4' = MJE3055 veya TIP3055
D1, D1 ',D2, D2' = 1N4002

 

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100 watt LM391 Audio Power Driver

 

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Power Amplifier 35W with LM391

A power amplifier that is based on the LM391, that is a complete driver of power transistors. It does not need despite few external elements in order to it works. With the TR1 we can regulate the calm current in 45mA. Inductor L1 is constituted by 20 coils of wire, with thickness 0.9mm, round resistor R16. Transistors Q3-4 should be placed on heatsink. If are used the Q3-4 in packing TIPxxxx they can be placed straight above in PCB. If however they are used transistor in packing TO-3, then it will be supposed they are connected with short cables in the corresponding places on PCB.

 

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lm391-guitar-amplifier-circuit



amp specifications

• frequency band (at 3dB/8Ω): 11Hz … 20kHz
• THD at 1kHz: 0.006% at 1W/8&Omega/Ir = 400mA
• THD at 1kHz: 0.02% at Ir = 400mA
• THD at 1kHz: 0.02% at 65W/8&Omega/Uin = 873mV
• THD at 1kHz: 0.006% at 80W/4&Omega/Uin = 700mV

 

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Güçlü Ses Sürücüsü LM 391 - 100​

 

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