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1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
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2.Smooth support for design sizes of over 30,000 devices or 100,000 pads
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Std edition PreAmp4v3-public
Profile：An Audio Pre-Amplifier that provides active Volume, Bass and Treble Control.
Description
An Audio Pre-Amplifier that provides active Volume, Bass and Treble Control.
Based on the Baxandall design for Logarithmic Volume, Bass and Treble Control.
Complete instructions, test results, detailed description and more can be found at https://www.protoriam.com/preamp4/index.html
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | PORT-2PIN-P2.54 | AIN1,AOUT1,PWR1 | PORT-2PIN-P2.54-GENERIC | 3 |
| 2 | 15n | C1,C2 | C1206 | 2 |
| 3 | 100n | C3,C32 | C1206 | 2 |
| 4 | 22p | C4,C12 | C1206 | 2 |
| 5 | 10uF | C11,C31 | C1206 | 2 |
| 6 | 1uF | C21 | C1206 | 1 |
| 7 | RED (1.7V) | D31 | LED1206-R-RD | 1 |
| 8 | SPACER1 | P1,P2,P3,P4 | SPACER1 | 4 |
| 9 | GND | POT-GND1,POT-GND2 | PORT-1PIN-P2.54 | 2 |
| 10 | 2k | R1,R2,R31 | R1206 | 3 |
| 11 | 10k | R3,R14 | R1206 | 2 |
| 12 | 4.7k | R4,R11,R12 | R1206 | 3 |
| 13 | 100k | R21,R22 | R1206 | 2 |
| 14 | 10k | RB1,RT1,RV1 | RK0971110D88 | 3 |
| 15 | PJ-327A0-SMT | AIN3 | AUDIO-SMD_PJ-327A0-SMT | 1 |
| 16 | TL972IDR | U1 | SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL | 1 |
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