Transistor Hifi Amplifier 3W 1W

Transistor Hi-fi amplifier covers the frequency range from 30 Hz to 100 KHz. It has a wide operating voltage range from 7VDC to 15VDC.

Hi-fi Amplifier Technical data;

Continuous output power with 4-OHM Speaker
Supply voltage 15V: 3.2W
Supply voltage 12V: 2.05W
Supply voltage 9V: 0.97W
Frequency response: (-3dB) 30-100kHz
THD: 0.09
Signal-to-noise ratio: 80dB (12V)
Amplification: 40dB (100)

3W Hifi Amplifier Material List

Resistors:
R13, R14 – 1-ohm
R11, R12 – 68-ohm
R5, R7, R9 – 1k
R6 – 2.7k
R8 – 5.6k
R2, R4 – 10k
R10 – 100k
R15 – 100-ohm trimpot
R1 – 10k trimpot
Capacitors:
C4 – 1.2nF
C2, C3, C5, C7 – 10uf 25V
C8 – 220uf 16V
Cl, C9 – 2200uf 16V
Semiconductors:
T1, T2 – BC548
T3 – BC558
T5 – BD237
T6 – BD238
T4 – 2N1613
D1, D2 lN4148
D3, D4 – 1N4001

Source: de.elv.com/p/2-w-mini-hifi-verstaerker-P202965/?itemId=202965