SKEMA AUDIO AMPLIFIER MINI 2 WATT

Rangkain yang cukup sederhana dan murah ini, bisa dipergunakan untuk di komputer, CD Player dan lain-lain yang menggunakan keluaran headphone.

SW1 adalah untuk mode Bass boost dalam keadaan tertutup.

Skematik Diagram:

Daftar komponen :

P1 = 10K	Log.Potentiometer
R1,R2 = 33K	1/4W Resistor
R3 = 33R	1/4W Resistor
R4 = 15K	1/4W Resistor
R5,R6 = 1K	1/4W Resistor
R7 = 680R	1/4W Resistor
R8 = 120R	1/2W Resistor
R9 = 100R	1/2W Trimmer Cermet
C1,C2 = 10΅F	63V Electrolytic Capacitor
C3 = 100΅F	25V Electrolytic Capacitor
C4,C7 = 470΅F	25V Electrolytic Capacitor
C5 = 47pF	63V Ceramic Capacitor
C6 = 220nF	63V Polyester Capacitor
C8 = 1000΅F	25V Electrolytic Capacitor
D1 = 1N4148	75V 150mA Diode
Q1 = BC560C	45V 100mA PNP Low noise High gain Transistor
Q2 = BC337	45V 800mA NPN Transistor
Q3 =TIP31A	60V 4A    NPN Transistor
Q4 = TIP32A	60V 4A    PNP Transistor
SW1	SPST switch
SPKR	3-5 Watt Loudspeaker, 8, 4 or 2 Ohm impedance

Data teknis :

• Output power: 1.5 Watt RMS @ 8 Ohm, 2.5 Watt @ 4 Ohm, 3.5 Watt @ 2 Ohm (1KHz sinewave)
• Sensitivity: 100mV input for 1.5W output @ 8 Ohm
• Frequency response: 30Hz to 20KHz -1dB
• Total harmonic distortion @ 1KHz & 10KHz: Below 0.2% @ 8 Ohm 1W, below 0.3% @ 4 Ohm 2W, below 0.5% @ 2 Ohm 2W.