 |
| Gambar PCB ANDA PA Prenjak V02 R4 |
 |
| Gambar PCB Amplifier Prenjak |
PM 73 GM 18
32W/8Ohm, 1kHz -> 0.000943%
32W/8Ohm, 20kHz -> 0.010486%
SR 500
PSRR 1kHz -> 96
Tujuan yang ingin dicapai dari desain amplifier ini adalah mempunyai SR tinggi dan THD yang cukup kecil. Karena alasan tersebut maka dipilihlah topologi CFA (Current Feedback Amplifier). Rangkain dasar amplifier Prenjak adalah VSSA (Very Small Symetrical Amplifier).
Berbeda dengan VSAA versi asli dimana amplifier Prenjak ini menggunakan rangkain buffer sebelum final stage dan perubahan pada rangkain kompensasi. Perubahan ini dimaksudkan untuk memperoleh THD yang lebih kecil, SR yang lebih tinggi, dan PSSR yangg lebih tinggi. Amplifier ini menggunakan Lateral MOSFET 2SK134/2SJ49 atau persamaannya sebagai final stage nya.
Amplifier ini membutuhkan PSU simetris 35VDC dan arus 3A. Bias amplifier diatur sebesar 150mA.
BOM Amplifier Prenjak
| Parts | Value | Qty | Package |
| C1 | 10uF | 1 | C375-203X418 |
| C13, C14 | 100uF/50V | 2 | E5-10,5 |
| C15, C23, C24 | 1uF | 3 | C075-063X106 |
| C16, C17 | 470uF/50V | 2 | E5-13 |
| C2 | 150pF | 1 | C050-025X075 |
| C20, C25 | 10uF/50V | 2 | E5-6 |
| C21, C22 | 1000uF/50V | 2 | E7,5-18 |
| C26 | 100nF/100V | 1 | C102-043X133 |
| C3, C4, C11, C12, C18, C19 | 100nF | 6 | C050-024X044 |
| C5, C7 | 1000uF/6.3V | 2 | E5-10,5 |
| C6, C8 | 3.3uF | 2 | C275-173X316 |
| C9, C10 | 33pF | 2 | C050-025X075 |
| D1, D2, D3 | 1N4148 | 3 | DO35-7 |
| F1, F2 | 4A | 2 | SHK20L |
| LED1, LED2 | RED | 2 | LED5MM |
| Q1, Q2 | 2SA992 | 2 | TO92-BCE |
| Q10 | 2SC5171 | 1 | TO220V |
| Q11 | 2SA1930 | 1 | TO220V |
| Q12 | 2SK134 | 1 | TO3 |
| Q13 | 2SJ49 | 1 | TO3 |
| Q3, Q4 | 2SC1845 | 2 | TO92-BCE |
| Q5 | 2SA1381 | 1 | TO126AV |
| Q6 | 2SC3503 | 1 | TO126AV |
| Q7 | BD139 | 1 | TO126AV |
| Q8 | 2N5551 | 1 | TO92-CBE |
| Q9 | 2N5401 | 1 | TO92-CBE |
| R1 | 100K | 1 | 0207/10 |
| R10 | 560r | 1 | 0207/10 |
| R12 | 1K | 1 | 3362H |
| R13, R14 | 560 0.5W | 2 | 0309/12 |
| R15, R16 | 470 0.5W | 2 | 0309/12 |
| R19, R24 | 33r | 2 | 0207/10 |
| R2, R11, R17, R18 | 680r | 4 | 0207/10 |
| R20 | 2K2 | 1 | 0207/10 |
| R21 | 1K | 1 | 0207/11 |
| R22 | 150r | 1 | 0207/10 |
| R23 | 1K | 1 | 3362H |
| R25, R26 | 22r | 2 | 0207/10 |
| R27, R30 | 100K | 2 | 0309/12 |
| R28, R29 | 2K2 | 2 | 0309/12 |
| R3 | 22K | 1 | 0207/10 |
| R32, R33 | 100r | 2 | 0207/10 |
| R34, R35 | 10 1W FUSIBLE | 2 | 0411/15 |
| R36 | 10 2W | 1 | 0617/17 |
| R37 | 2.2 1W || 1uH | 1 | DR1,5A |
| R4 | 10 0.5W | 1 | 0309/12 |
| R5, R6 | 12K | 2 | 0207/10 |
| R7 | 1K | 1 | 0207/10 |
| R8, R9, R31 | 47 0.5W | 3 | 0309/12 |
UPDATE!
BOM ANDA PA Prenjak V01 R1
| Parts | Qty | Value | Package |
| C1 | 1 | 10uF | C375-203X418 |
| C13, C14 | 2 | 100uF/50V | E5-10,5 |
| C15, C23, C24 | 3 | 1uF | C075-063X106 |
| C16, C17 | 2 | 470uF/50V | E5-13 |
| C2 | 1 | 150pF | C050-024X044 |
| C20, C25 | 2 | 10uF/50V | E5-6 |
| C21, C22 | 2 | 1000uF/50V | E7,5-18 |
| C26 | 1 | 100nF/100V | C102-043X133 |
| C3, C4, C11, C12, C18, C19 | 6 | 100nF | C050-024X044 |
| C5, C7 | 2 | 1000uF/6.3V | E5-13 |
| C6, C8 | 2 | 3.3uF | C275-173X316 |
| C9, C10 | 2 | 33pF | C050-024X044 |
| D1, D2, D3 | 3 | 1N4148 | DO35-7 |
| F1, F2 | 2 | 4A | SHK20L |
| LED1, LED2 | 2 | RED | LED5MM |
| Q1, Q2 | 2 | 2SA992 | TO92-BCE |
| Q10 | 1 | 2SC5171 | TO220V |
| Q11 | 1 | 2SA1930 | TO220V |
| Q12 | 1 | 2SK134 | TO3 |
| Q13 | 1 | 2SJ49 | TO3 |
| Q3, Q4 | 2 | 2SC1845 | TO92-BCE |
| Q5 | 1 | 2SA1381 | TO126AV |
| Q6 | 1 | 2SC3503 | TO126AV |
| Q7 | 1 | BD139 | TO126AV |
| Q8 | 1 | 2N5551 | TO92-CBE |
| Q9 | 1 | 2N5401 | TO92-CBE |
| R1 | 1 | 100K | 0207/7 |
| R10 | 1 | 560r | 0207/7 |
| R12, R13 | 2 | 560 0.5W | 0309/10 |
| R14, R15 | 2 | 470 0.5W | 0309/10 |
| R18, R22 | 2 | 33r | 0207/7 |
| R19 | 1 | 2K2 | 0207/7 |
| R2, R11, R16, R17 | 4 | 680r | 0207/7 |
| R20 | 1 | 100R | 0207/7 |
| R21 | 1 | 470r | 0207/7 |
| R23, R24 | 2 | 22r 0.5W | 0207/7 |
| R25, R28 | 2 | 100K | 0309/10 |
| R26, R27 | 2 | 2K2 | 0309/10 |
| R29, R38 | 2 | 22r 0.5W | 0309/10 |
| R3 | 1 | 22K | 0207/7 |
| R30, R31 | 2 | 100r | 0207/7 |
| R32 | 1 | 10 2W | 0617/17 |
| R33 | 1 | 2.2 1W || 1uH | DR1,5A |
| R34, R35 | 2 | 10 1W FUSIBLE | 0411/15 |
| R4 | 1 | 10 0.5W | 0309/10 |
| R5, R6 | 2 | 12K | 0207/7 |
| R7 | 1 | 1K | 0207/7 |
| R8, R9 | 2 | 47 0.5W | 0309/10 |
| VR1 | 1 | 1K | 3362H |
| VR2 | 1 | 2K | 3362H |
|
Parts |
Qty |
Value |
Package |
|
R4 |
1 |
10 0.5W |
0309/12 |
|
R34, R35 |
2 |
10 1W FUSIBLE |
0411/15 |
|
R32 |
1 |
10 2W |
0617/17 |
|
R30, R31 |
2 |
100R |
0207/10 |
|
C21, C22 |
2 |
1000uF/50V |
E7,5-18 |
|
C5, C7 |
2 |
1000uF/6.3V |
E7,5-16 |
|
R1 |
1 |
100K |
0207/10 |
|
R25, R28 |
2 |
100K |
0309/12 |
|
R20 |
1 |
100R |
0207/10 |
|
C3, C4, C11, C12, C18, C19 |
6 |
100nF |
C050-024X044 |
|
C26 |
1 |
100nF/100V |
C102-043X133 |
|
C13, C14 |
2 |
100uF/50V |
E5-13 |
|
C1 |
1 |
10uF |
CSA12U250V |
|
C20, C25 |
2 |
10uF/50V |
E5-6 |
|
R5, R6 |
2 |
12K |
0207/10 |
|
C2 |
1 |
150pF |
C050-025X075 |
|
VR1 |
1 |
1K |
3362H |
|
R12A, R12B, R13A, R13B, R14A, R14B, R15A, R15B |
8 |
1K |
0207/7 |
|
R7 |
1 |
1K |
0207/10 |
|
D1, D2, D3 |
3 |
1N4148 |
DO35-7 |
|
C15, C23, C24 |
3 |
1uF |
C075-063X106 |
|
R33+L1 |
1 |
2.2 1W || 1uH |
DR1,5A |
|
R23, R24 |
2 |
22R |
0207/10 |
|
R3 |
1 |
22K |
0207/10 |
|
R29, R38 |
2 |
22r 0.5W |
0309/12 |
|
VR2 |
1 |
2K |
3362H |
|
R19 |
1 |
2K2 |
0207/10 |
|
R26, R27 |
2 |
2K2 |
0309/12 |
|
Q9 |
1 |
2N5401 |
TO92-CBE |
|
Q8 |
1 |
2N5551 |
TO92-CBE |
|
Q5 |
1 |
2SA1381 |
TO126AV |
|
Q11 |
1 |
2SA1930 |
TO220V |
|
Q1, Q2 |
2 |
2SA992 |
TO92-BCE |
|
Q3, Q4 |
2 |
2SC1845 |
TO92-BCE |
|
Q6 |
1 |
2SC3503 |
TO126AV |
|
Q10 |
1 |
2SC5171 |
TO220V |
|
Q13 |
1 |
2SJ162 |
TO247BV |
|
Q12 |
1 |
2SK1058 |
TO247BV |
|
C6, C8 |
2 |
3.3uF |
C275-173X316 |
|
R18, R22 |
2 |
33R |
0207/10 |
|
C9, C10 |
2 |
33pF |
C050-025X075 |
|
R8, R9 |
2 |
47 0.5W |
0309/12 |
|
R21 |
1 |
470R |
0207/10 |
|
C16, C17 |
2 |
470uF/50V |
E7,5-16 |
|
F1, F2 |
2 |
4A |
SHK20L |
|
R10 |
1 |
560R |
0207/10 |
|
R2, R11, R16, R17 |
4 |
680R |
0207/10 |
|
Q7 |
1 |
BD139 |
TO126AV |
|
K1 |
1 |
Input |
02P |
|
LED1, LED2 |
2 |
RED |
LED5MM |
