57maker/headphone_amplifier_v0Headphone amplifier v0 is an open-source printed circuit board by 57maker, from the 57maker/headphone_amplifier_v0 repository on GitHub, published under the MIT licence. It is a 2-layer board of 74.9 × 84.9 mm with 38 parts on 22 nets, routed with 142 tracks and 0 vias.
It is built around the NE5532, LM7812 and LM7912T, with the KBL406 among its other parts. Its parts include 14 capacitors, 8 resistors, 7 connectors, 3 ICs and 1 diode. It belongs with the audio and music boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1u | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C7, C8, C9, C10 |
| 3 | Conn_01x03 | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-3_1x03_P2.54mm_Horizontal | J1, J3, J5 |
| 2 | 0.1u | Capacitor_THT:C_Rect_L10.0mm_W5.0mm_P5.00mm_P7.50mm | C13, C14 |
| 2 | 0.22u | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C3, C4 |
| 2 | 100K | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R5 |
| 2 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C5, C6 |
| 2 | 1K | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R2, R6 |
| 2 | 1u | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C11, C12 |
| 2 | 2200u | Capacitor_THT:CP_Radial_D12.5mm_P5.00mm | C1, C2 |
| 2 | 3.3K | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R7 |
| 2 | AudioJack3_SwitchTR | Connector_Audio:Jack_3.5mm_CUI_SJ1-3515N_Horizontal | J2, J4 |
| 2 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J6, J7 |
| 2 | R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R4, R8 |
| 1 | KBL406 | Diode_THT:Diode_Bridge_Vishay_KBU | D1 |
| 1 | LM7812 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | LM7912 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | NE5532 | Package_DIP:DIP-8_W7.62mm_Socket | U3 |
| 1 | R_Potentiometer_Dual | Potentiometer_THT:Potentiometer_Alps_RK097_Dual_Horizontal | RV1 |
The 34 most common of 38 parts.
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It measures 74.9 × 84.9 mm and has 2 copper layers, 1.6 mm thick.
38 parts, built around the NE5532, LM7812, LM7912T and KBL406. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the 57maker/headphone_amplifier_v0 repository on GitHub, at the commit this page was made from: the board is headphone_amplifier_v0.kicad_pcb and its schematic audio_jack.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).