Headphone amplifier with Buffer
Symmetrical Power Supply
OP-Amp Power
Buffer Power
Negative Inpout
Left / Right Inpout
| Bill Of Materials For Audio amplifier with Buffer | ||||||
| 19 Resistors | ||||||
| Quantity: | References | Value | ||||
| 5 | R1, R2, R7, R9, R13 | 4K7 | ||||
| 2 | R3, R4 | 4R7 | ||||
| 3 | R5, R6, R15 | 1k | ||||
| 2 | R8, R18 | 10k | ||||
| 3 | R10, R16, R17 | 220R | ||||
| 1 | R11 | 5K6 | ||||
| 2 | R12, R14 | 1M | ||||
| 1 | R19 | 100k | ||||
| 19 Capacitors | ||||||
| Quantity: | References | Value | ||||
| 7 | C1, C2, C8, C10, C12, C13, C16 | 0.1uF | ||||
| 2 | C3, C4 | 220uF | ||||
| 3 | C5, C6, C15 | 1uF | ||||
| 1 | C7 | 4700uF | ||||
| 2 | C9, C11 | 220uF | ||||
| 1 | C14 | 1000uF | ||||
| 1 | C17 | 10pF | ||||
| 1 | C18 | 0.082uF | ||||
| 1 | C19 | 33u | ||||
| 7 Integrated Circuits | ||||||
| Quantity: | References | Value | ||||
| 1 | U1 | 7809 | ||||
| 1 | U2 | 7909 | ||||
| 1 | U3 | 7824 | ||||
| 1 | U4 | 7924 | ||||
| 1 | U5 | AD823 | ||||
| 2 | U6, U7 | BUF634P | ||||
| 2 Transistors | ||||||
| Quantity: | References | Value | ||||
| 1 | Q1 | 2N2222 | ||||
| 1 | Q2 | 2N2907 | ||||
| 9 Diodes | ||||||
| Quantity: | References | Value | ||||
| 2 | D1, D2 | 1N4148 | ||||
| 6 | D3-D8 | 1N4001 | ||||
| 1 | D9 | 1N5297 | ||||
| 8 Miscellaneous | ||||||
| Quantity: | References | Value | ||||
| 1 | AC1 | |||||
| 2 | FUSE1, FUSE2 | 5A | ||||
| 2 | LED1, LED2 | LED-GREEN | ||||
| 1 | RV1 | 50k | ||||
| 1 | SW1 | SW-SPST | ||||
| 1 | TR1 | TRAN-2P3S | ||||
