2 layers80 × 100 mm
Gain box amp pcb
carmisergio/denon-preout-mod
PCB designs and firmware for the Denon AVR-X1300W Pre-out mod
58 parts
2 layers175 × 85 mm
Gain box psu pcb
carmisergio/denon-preout-modPCB designs and firmware for the Denon AVR-X1300W Pre-out mod
- Size
- 175 × 85 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 80
- Nets
- 62
- Pads
- 220
- Tracks, vias
- 311, 9
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Sep 2024
- Updated
- 17 Jan 2025
Overview
Gain box psu pcb is an open-source printed circuit board by carmisergio, from the carmisergio/denon-preout-mod repository on GitHub. It is a 2-layer board of 175 × 85 mm with 80 parts on 62 nets, routed with 311 tracks and 9 vias.
It is built around the ATTINY412-SSN, IRM-10-12 and 78L05, with the LM7809T, LM7909CT and SL1B among its other parts. Its parts include 18 capacitors, 11 resistors, 11 diodes, 6 connectors and 5 ICs. It belongs with the power boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
9
ATTINY412-SSN
SOIC-8-40℃~+105℃ 1.8V~5.5V 10bit 128Byte 20MHz 256Byte 4KB 6 8 Bit 8bit AVR Built-in FLASH SOIC-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
IRM-10-12
插件,45.7x5.4mm插件,45.7x5.4mm Power Module/Power Supply ROHSMWPower Module/Power Supply
78L05
SOT-89-3-20℃~+120℃@(Tj) 1 1.7V 100mA 2mA 30V 40uV 49dB@(120Hz) 5V Fixed Over Temperature Protection、Short Circuit Protection Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSUMWVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LM7809T
TO-220-20℃~+80℃@(Ta) 1 1A 35V 56dB@(120Hz) 57uV 9V Fixed Positive Short Circuit Protection、Thermal shutdown TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LM7909CT
TO-220-3-20℃~+125℃@(Ta) 1 1.5A 1.5V@(1A) 190uV 25V 5mA 60dB@(120Hz) 9V Fixed Negative Over Current Protection、Short Circuit Protection、Thermal shutdown TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SL1B
SOD-123FSOD-123F New Arrivals ROHSDIOTECUncategorised
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsJ104D2C12VDC.36S
插件Signal RelaysCIT Relay and SwitchJ107F1CS2012VDC.80
插件-55℃~+125℃ 10ms 110V@DC、380V@AC 12V 20A 20A@125VAC、20A@16VDC 400Ω 50mΩ 5ms 800mW AgSnO2 One set changeover: 1C (SPDT - changeover) 插件 Power Relays ROHSCIT Relay and SwitchPower Relays
README
README.mdDenon AVR-X1300W Pre-out mod
The scope of this project is adding line-level outputs to the Denon AVR-X1300W AV Receiver. This can be acheived by getting the low-level signals from the digital board of the receiver before they make their way to the power amp board.
The "Vampire PCB" is soldered directly to the digital board of the receiverr, and provides an 8-pin JST PH connector with the signals. A small length of shielded cable brings them to the back panel of the unit, where removing the AM/FM tuner unit provides a convenient place to mount a miniature circular connector.
An external "Gain Box" amplifies the ~150Vrms internal signal to a usable (variable) line level with a single stage of op-amp amplification. It also processes the 12V signal coming from the receiver to operate muting relays on the output and generate a standard 12V trigger signal which can be used to control the amplifiers.
Parts
80| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100n | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C9, C10, C11, C12, C13, C14, C15, C16, C17, C18 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14 |
| 7 | SL1B | Diode_SMD:D_SOD-123 | D5, D6, D7, D8, D9, D10, D11 |
| 6 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5, R6, R7, R8, R9 |
| 6 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP1, TP2, TP3, TP4, TP5, TP6 |
| 5 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4, H5 |
| 4 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C5, C6, C7, C8 |
| 4 | 1N4002 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3, D4 |
| 4 | 2200u | Capacitor_THT:CP_Radial_D16.0mm_P7.50mm | C1, C2, C3, C4 |
| 3 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 2 | 10/1W | Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R1, R2 |
| 2 | 33k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R11 |
| 2 | Conn_01x02 | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J4, J5 |
| 1 | 140817141310 | Package_DIP:DIP-4_W7.62mm | U4 |
| 1 | 2.2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 300VAC | Varistor:RV_Disc_D9mm_W4.5mm_P5mm | RV1 |
| 1 | 70042K | project_lib:XFMR_70042K | T1 |
| 1 | 78L05 | Package_TO_SOT_SMD:SOT-89-3 | U3 |
| 1 | ATtiny412-SS | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | AVR-UPDI-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J6 |
| 1 | Conn_01x02 | Connector_JST:JST_VH_B2P3-VH_1x02_P7.92mm_Vertical | J1 |
| 1 | Conn_01x03 | Connector_JST:JST_VH_B3P-VH-B_1x03_P3.96mm_Vertical | J3 |
| 1 | Conn_01x04 | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J2 |
| 1 | IRM-10-12 | project_lib:CONV_IRM-10-12 | PS1 |
| 1 | J104D2C12VDC.36S | Relay_THT:Relay_DPDT_Finder_30.22 | K2 |
| 1 | J107F1CS2012VDC.80 | project_lib:RELAY_SRD-C | K1 |
| 1 | LM7809 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | LM7909 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | LOGO | project_lib:GND_Symbol | G*** |
| 1 | Screw_Terminal_01x01 | project_lib:KEYSTONE_7760 | H6 |
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Questions
How big is the Gain box psu pcb PCB?
It measures 175 × 85 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Gain box psu pcb use?
80 parts, built around the ATTINY412-SSN, IRM-10-12, 78L05 and LM7809T. 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.
Where can I download the Gain box psu pcb KiCad files?
From the carmisergio/denon-preout-mod repository on GitHub, at the commit this page was made from: the board is gain_box_psu_pcb/kicad_project/gain_box_psu_pcb.kicad_pcb and its schematic gain_box_amp_pcb/kicad_project/gain_box_amp_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Gain box psu pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask carmisergio before reusing the design.