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STD Relay stepped attenuator
License: Public Domain
Mode: Editors' pick
- 1
Update time：
2019-05-20 17:24:57
Creation time：
2019-02-24 15:06:09
Description
http://www.vaneijndhoven.net/jos/attenuator-calculator/index.html
resistor: 39k
0.5db steps
8 stages
e24 values
For use in Hammond Case 1455K1201BK
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 180E | R1,R19 | 1206 | 2 |
| 2 | 360E | R2,R20 | 1206 | 2 |
| 3 | 680E | R3,R21 | 1206 | 2 |
| 4 | 1k2 | R4,R22 | 1206 | 2 |
| 5 | 2k2 | R5,R23 | 1206 | 2 |
| 6 | 3k6 | R6,R24 | 1206 | 2 |
| 7 | 5k1 | R7,R25 | 1206 | 2 |
| 8 | 6k2 | R8,R17,R26,R35 | 1206 | 4 |
| 9 | 220k | R9,R27 | 1206 | 2 |
| 10 | 100k | R10,R28 | 1206 | 2 |
| 11 | 51k | R11,R29 | 1206 | 2 |
| 12 | 24k | R12,R30 | 1206 | 2 |
| 13 | 10k | R13,R31 | 1206 | 2 |
| 14 | 3k9 | R14,R32 | 1206 | 2 |
| 15 | 1k1 | R15,R33 | 1206 | 2 |
| 16 | 160E | R16,R34 | 1206 | 2 |
| 17 | NAIS DS2Y | K8,K1,K2,K3,K4,K5,K6,K7,K9,K10,K11 | RELAY-OMRON_G5V2 | 11 |
| 18 | arduino_nano_v3_Saxar | U2 | ARDUINO_NANO1 | 1 |
| 19 | 100 | R49 | CONTELEC PD212 POT | 1 |
| 20 | 10n | C1 | 0805 | 1 |
| 21 | 100n | C2,C4 | 0805 | 2 |
| 22 | CBP2 | P1 | 2CHINCH | 1 |
| 23 | ULN2803G-D18-T | U4 | DIP-18 | 1 |
| 24 | VC 5,0/2/9 | T1 | PRINT-TRAFO | 1 |
| 25 | DB104S | D9 | BRIDGE-DBS | 1 |
| 26 | 1u | C6,C7,C8 | CAP-D6.3XF2.5 | 3 |
| 27 | 1N4148W | D10,D11,D1,D2,D3,D4,D5,D6,D7,D8 | SOD-123 | 10 |
| 28 | LED-3MM | LED1 | LED-3MM/2.54 | 1 |
| 29 | 220 | R41 | 1206 | 1 |
| 30 | 75E | R18,R38 | 1206 | 2 |
| 31 | 2M7 | R36,R37,R39,R40,R42,R43,R44,R45,R46,R47,R48,R50 | 1206 | 12 |
| 32 | CBP4 | P5 | 4CHINCH | 1 |
| 33 | EVQ22705R | SW1,SW2 | KEY-6.0*6.0-4 | 2 |
| 34 | Header-Male-2.54_2x2 | P2 | HDR-2X2/2.54 | 1 |
| 35 | Header-Male-2.54_1x1 | P3,P4 | HDR-1X1/2.54 | 2 |
| 36 | -CON4 | OLED | CON4 | 1 |
| 37 | JUMPER | JP1 | JUMPER2 | 1 |
| 38 | NE5532DR | U1 | SOIC-8_150MIL | 1 |
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