> For the complete documentation index, see [llms.txt](https://book.ferro.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.ferro.pro/elec.md).

# elec

* [Package](#package)
* [Symbol](#symbol)
* [Buck & Boost](#buck--boost)
  * [Buck/step-down regulators](#buckstep-down-regulators)
    * [Synchronous Rectification](#synchronous-rectification)
  * [Boost/step-up regulators](#booststep-up-regulators)
  * [forward vs flybac](#forward-vs-flybac)
* [Oscilloscope](#oscilloscope)

## Package

<https://en.wikipedia.org/wiki/List\\_of\\_integrated\\_circuit\\_packaging\\_types#Transistor,\\_diode,\\_small-pin-count\\_IC\\_packages>

## Symbol

<https://en.wikipedia.org/wiki/Electronic\\_symbol>

## Buck & Boost

by Eugene Khutoryansky: <https://www.youtube.com/watch?v=vwJYIorz\\_Aw>

More: [boost.md](/elec/boost.md) | [bulk.md](/elec/bulk.md)

### Buck/step-down regulators

<https://learnabout-electronics.org/PSU/psu31.php>

15: <https://www.bilibili.com/video/BV1nA411t7U4>

BUCK电源电感怎么选择： <https://www.bilibili.com/video/BV1ig411P7dc?t=112.2>

#### Synchronous Rectification

同/异步整流：<https://www.bilibili.com/video/BV1Jv411P7Qc?t=369.7\\>
<https://www.analog.com/en/analog-dialogue/raqs/raq-issue-147.html>

### Boost/step-up regulators

<https://learnabout-electronics.org/PSU/psu31.php>

### forward vs flybac

<https://www.eet-china.com/mp/a12732.html\\>
反激的变压器可以看作一个带变压功能的电感，是一个buck-boost电路。反激是初级工作，次级不工作，一般DCM模式。\
正激的变压器是只有变压功能，整体可以看成一个带变压器的buck电路。正激是初级工作次级也工作，次级不工作有续流电感续流，一般是CCM模式。

反激式同步整流控制技术：<https://www.bilibili.com/video/BV1bJ411W7Hi>

## Oscilloscope

示波器测量市电 - AB伪差分：[Siglent](https://youtu.be/kIir80Jnlyo?t=296) | [Tek](https://www.bilibili.com/video/BV1JU4y1K7cy?t=421.1)\
纹波：[Tek](https://www.bilibili.com/read/cv14145415) | [Rigol](https://www.bilibili.com/video/BV1my4y167ao?t=77.1)