The circuit board I made is powered by the USB port of the computer. I feel that the voltage should be relatively stable. Is it necessary to add a voltage regulator circuit? I wanted to add a 7805 three-terminal regulator, but after thinking about it, I haven't seen this IC in the circuit of a USB device.
Sorted out, 2 questions.
1. Do you still need a voltage regulator circuit when connected to the computer's USB port for power supply?
2. Is there a regulator with a smaller volume than the three-terminal regulator chip 7805? Or use other methods to stabilize the voltage (requires small component size)?
| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Team | 5 |
| 2 | Mason Goebel | 1 |
| 3 | Engineer | 1 |
