Public Domain
9V input. Output range: 5V-6V over twelve "keys." Designed to be connected to twelve simple switches or buttons and fed into an oscillator's CV input jack.
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Note: This design also features a space (currently unused) for a built-in dual oscillator (SN74LVC2G132).
| ID | Name | Designator | Quantity |
|---|---|---|---|
| 1 | 1N4148 | D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D1 | 12 |
| 2 | +9V Input | V1 | 1 |
| 3 | SPST_Open | S1,S2,S3,S4,S5,S6,S7,S8,S9,S10,S11,S12 | 12 |
| 4 | 1K | R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R23 | 12 |
| 5 | 1.25K | R12 | 1 |
| 6 | 1.3K | R13 | 1 |
| 7 | 1.36K | R14 | 1 |
| 8 | 1.412K | R15 | 1 |
| 9 | 1.475K | R16 | 1 |
| 10 | 1.538K | R17 | 1 |
| 11 | 1.607K | R18 | 1 |
| 12 | 1.68K | R19 | 1 |
| 13 | 1.748K | R20 | 1 |
| 14 | 1.829K | R21 | 1 |
| 15 | 1.902K | R22 | 1 |
| 16 | 2K | R24 | 1 |
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