# 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)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://book.ferro.pro/elec.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.