
DRAM Tester x1x4-lcd
goriponsoft/DRAM-Tester-x1x4-lcd
DRAM tester that supports 4116/8265/4164/41256/4532/4416/4464/44256/4400 and is equipped with an LCD.

CMOY battery-powered headphone amp
CMOY is an open-source printed circuit board by NeilKhera, from the NeilKhera/CMOY repository on GitHub. It is a 4-layer board of 54 × 59 mm with 40 parts on 26 nets, routed with 84 tracks and 0 vias.
It is built around the OPA2132PA, SJ1-3533 and RK0971221Z05, with the SS22SDP2 among its other parts. Its parts include 11 resistors, 6 capacitors, 2 ICs, 2 connectors and 1 diode. It belongs with the audio and music boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 0.1uF | CMOY:BFC237022104 | C2, C5 |
| 2 | 100K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2, R6 |
| 2 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4, R8 |
| 2 | 10nF | Capacitor_THT:C_Rect_L4.0mm_W2.5mm_P2.50mm | C3, C6 |
| 2 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R7 |
| 2 | 47R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5, R9 |
| 2 | 5K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R10, R11 |
| 2 | G*** | kibuzzard-6524AA5F | kibuzzard-6524AA5F, kibuzzard-6524AA5F |
| 2 | SJ1-3533 | Connector_Audio:Jack_3.5mm_CUI_SJ1-3533NG_Horizontal | J2, J2 |
| 1 | +4.5V | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | + |
| 1 | -4.5V | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | - |
| 1 | 1uF | Capacitor_THT:C_Rect_L4.0mm_W2.5mm_P2.50mm | C4 |
| 1 | 220uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C1 |
| 1 | 4.7K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 9V | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | G*** | kibuzzard-6510B680 | kibuzzard-6510B680 |
| 1 | G*** | kibuzzard-6524AA66 | kibuzzard-6524AA66 |
| 1 | G*** | kibuzzard-6510B65E | kibuzzard-6510B65E |
| 1 | G*** | kibuzzard-6524C337 | kibuzzard-6524C337 |
| 1 | G*** | kibuzzard-6524C2C1 | kibuzzard-6524C2C1 |
| 1 | G*** | kibuzzard-6510B7DC | kibuzzard-6510B7DC |
| 1 | G*** | kibuzzard-6510B696 | kibuzzard-6510B696 |
| 1 | G*** | kibuzzard-6524AA99 | kibuzzard-6524AA99 |
| 1 | G*** | kibuzzard-6510B935 | kibuzzard-6510B935 |
| 1 | G*** | kibuzzard-6524C34B | kibuzzard-6524C34B |
| 1 | GND | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | G |
| 1 | LED_Small | LED_THT:LED_D2.0mm_W4.8mm_H2.5mm_FlatTop | D1 |
| 1 | OPA2132PA | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U1 |
| 1 | RK0971221Z05 | CMOY:RK0971221Z05 | RV1 |
| 1 | SS22SDP2 | CMOY:SS22SDP2_NKK | SW1 |
| 1 | TLE2426xD | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U2 |
It measures 54 × 59 mm and has 4 copper layers, 1.6 mm thick.
40 parts, built around the OPA2132PA, SJ1-3533, RK0971221Z05 and SS22SDP2. 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 NeilKhera/CMOY repository on GitHub, at the commit this page was made from: the board is CMOY.kicad_pcb and its schematic CMOY.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask NeilKhera before reusing the design.

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