USB2.0 20-select 1 or 0 selector, using CH444 chip for analog switching. Use pro mini for control. In order to prevent some USB devices from being unable to enumerate due to constant power switching, a vcc relay is specially added. You can disconnect the vcc power supply and power on again to make the device work normally.
| Devices | Class | introduce | Datasheet |
|---|---|---|---|
| WJ15EDGRC-3.81-4P | The connector;Plug type terminal | Type: Pin/Board End, Shrouded (4 Sides) Pitch: 0.150" (3.81mm) Number of Pins per Level: 4 Number of Levels: 1 Number of Poles: 4 | Download |
| NANOSMDC200F-2 | Download | ||
| 1N4148WS | Switching diode | Download | |
| DC-044A-20A | Download | ||
| JQC-3FB-S/005-1H11 | Download | ||
| MICRO5P 4J ZB-X | The USB connector | Download | |
| MMS8050-H-TP | Download | ||
| SCR0805J10K | SMD resistor | Download | |
| KF1027B-04P-G00-DFT-01B | Dial the code switch | Download | |
| CH444G | Analog mixed-signal IC;Analog switch chip | 550MHZ bandwidth, internal resistance 5 ohms, two groups of four to choose one, high-speed low-resistance analog switch, has been running stably in industrial power products for a long time | Download |
| USB-255-BRYH137 | The USB connector | Download | |
| USB-B10-BRW | The USB connector | Download |
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