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STD KA2281 LED 2-Channel 10LED/Ch VU Meter
KA2281 LED 2-Channel 10LED/Ch VU Meter
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Update time：
2021-04-08 08:54:37
Creation time：
2018-02-13 20:32:41
Description
Description
It's a 90% SMD KA2281 LED 2-Channel 10LED/Ch VU Meter. For more info please see schematic!
Design Drawing
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | SN74HC139N | IC1,IC2 | DIP-16 | 2 |
| 2 | 0.47uF/50V | C1 | RAD-0.1 | 1 |
| 3 | 1u | C2 | RAD-0.1 | 1 |
| 4 | 10kOhm | R1,R2 | 0402 | 2 |
| 5 | 50kOhm | R3,R6 | 0402 | 2 |
| 6 | 47kOhm | R4,R5 | 0402 | 2 |
| 7 | 4.7uF/16V | C3,C4 | RAD-0.1 | 2 |
| 8 | Red(0603) | LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8,LED9,LED10,LED11,LED12,LED13,LED14,LED15,LED16,LED17,LED18,LED19,LED20 | 3528 | 20 |
| 9 | ?R | R7,R8,R9,R10,R11,R12,R13,R14,R15,R16,R17,R18,R19,R20,R21,R22,R23,R24,R25,R26 | 0603 | 20 |
| 10 | AUDIO-JACK | JP1 | AUDIO-JACK-3.5MM-SMD | 1 |
| 11 | MICRO USB 5S B | USB1 | MICRO-USB-1 | 1 |
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