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Std EditionLM3915 UA741 Vu-meter
Profile：This is a Vu-meter that uses the IC LM3915 and UA741.
Description
This is a Vu-meter that uses the IC LM3915 and UA741. UA741 is amplifing the signal based on the poosition of PR1 trimmer.
Documents
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | VCC | P2 | HDR-1X2/2.54 | 1 |
| 2 | HL-304H3GD | LED10,LED6,LED20,LED19,LED18,LED17,LED16,LED5,LED4,LED3,LED15,LED7,LED2,LED14,LED13,LED12,LED11,LED9,LED8,LED1 | LED-TH_BD3.0-P2.54-FD | 20 |
| 3 | INL/R | P1 | HDR-TH_3P-P2.54-V | 1 |
| 4 | 220nF | C8,C1 | RAD-0.2 | 2 |
| 5 | 1uF | C3,C7 | RAD-0.2 | 2 |
| 6 | 100nF | C2 | RAD-0.2 | 1 |
| 7 | LM3915N-1 | U1,U4 | DIP18 | 2 |
| 8 | UA741IN | U3,U2 | DIP8 | 2 |
| 9 | 68/1W | R10,R7 | R_AXIAL-0.5 | 2 |
| 10 | 1N4148 | D4,D1,D3,D2 | DO-35_BD2.0-L4.0-P8.00-D0.5-FD | 4 |
| 11 | 220k | PR2,PR1 | RES-ADJ_3296W | 2 |
| 12 | 220uF | C5 | CAP-TH_BD8.0-P3.50-D1.0-FD | 1 |
| 13 | Z6V2 | ZD2,ZD1 | DO-35_BD2.0-L4.0-P8.00-D0.5-FD | 2 |
| 14 | 47uF | C4,C6 | CAP-D5.0×F2.0 | 2 |
| 15 | Bar(on)/Dot(off) | K2,K1 | SWITCHSILICONE | 2 |
| 16 | 47k | R2,R1,R15,R16 | R_AXIAL-0.3 | 4 |
| 17 | 1k | R8,R9 | R_AXIAL-0.3 | 2 |
| 18 | 2k2 | R6,R11 | R_AXIAL-0.3 | 2 |
| 19 | 470k | R4,R13 | R_AXIAL-0.3 | 2 |
| 20 | 330 | R3,R14 | R_AXIAL-0.3 | 2 |
| 21 | 10k | R5,R12 | R_AXIAL-0.3 | 2 |
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