Posted by Circuits Arena on Friday, 22 April 2016
12W Audio Amplifier MOSFET Based Circuit is the artlcle explaining 12W Audio Amplifier MOSFET Based Circuit This is a small 12W audio amplifier over a load of 8 Ω, that combining the NE5534 integrated...
12W Audio Amplifier MOSFET Based Circuit
This is a small 12W audio amplifier over a load of 8 Ω, that
combining the NE5534 integrated with a pair of V-MOSFET transistor
output stage technology as we get excellent sound performance. MOSFET
2SK135 / 2SJ50 from Hitachi is used in this circuit. Input sensitivity
of the circuit is 3V RMS maximum, the distortion factor is 0.002% at 1
kHz, and the frequency response is 15 Hz to 100 kHz. (-3dB).
This circuit requires a symmetrical (dual polarity) power supply with
voltage output +/- 25V and the current output should be 2A maximum.
12W Audio Amplifier Components List:
| R1 = 33 kΩ |
C1 = 1nF 63V |
D1 = 1N967B zener 18V 0.5W |
| R2 = 6.8 kΩ |
C2 = 47 µF 40V |
D2 = 1N967B zener 18V 0.5W |
| R3 = 22 kΩ |
C3 = 100 nF 63V |
D3 = 1N4148 |
| R4 = 100 kΩ |
C4 = 100 nF 63V |
D4 = 1N4148 |
| R5 = 1 kΩ |
C5 = 47 µF 40V |
Q1 = 2SK135 MOSFET |
| R6 = 330 Ω |
C6 = 4.7 pF ceramic |
Q2 = 2SJ50 MOSFET |
| R7 = 1 kΩ |
C7 = 100 µF 40V |
IC1 = NE5534 |
| R8 = 10 kΩ |
C8 = 100 µF 40V |
|
| R9 = 0.47 Ω 2W |
|
|
| R10 = 0.47 Ω 2W |
|
|
| R11 = 10 kΩ |
Power Supply Specification:
Voltage: Symmetrical 25V
Current : 1A – 2A Max
