05:29

一灯双控的4种接法，我猜就算老电工，也只知其一

03:36

拆解一个车载DSP功放，原来里面是这样的？长见识了丨Disassembling a car DSP amplifier

06:00

How to change the high power HP server platinum power supply to household

09:28

How to assemble a pair of HIFI speakers at low cost

08:10

LCH high precision tester can do things that a multimeter can't do, and it's very cheap

05:30

How to replace the 9V laminated battery of a multimeter with a lithium battery

01:57

How to use capacitors as firecrackers丨如何用电容做鞭炮

03:39

LiFePO4 battery丨How to make environmentally friendly and durable lithium iron phosphate AA batteries

02:01

How to make a USB5V three-port 5A charger with a wall switch

02:59

Tesla power battery丨How to use Tesla power battery to power the square dance speaker

01:48

Mobile phone antenna丨Is the external cell phone signal booster really a technology？

06:12

WIFI联网数控电源丨CNC DC power supply丨A compact digital controlled DC adjustable power supply

07:20

300W inverter丨How to make high efficiency inverter of field effect tube

04:01

How to make a low cost 18650 charger

05:56

Design and manufacture digital display chicken artifact 自己设计制造数字显示吃鸡神器，单发秒变机关枪，对手都被打哭了

03:45

damaged丨leakage protector丨Analysis of structural principles丨Waste utilization丨漏电断路器

03:31

Samsung original memory丨True and false distinction丨Operation process丨给电脑扩容三星原装内存，怎么辨别真假？自己动手升级就这么简单

04:53

农村的自来水脏得像泥水，99元买个水龙头净水器，立马清洁如泉水

01:40

Rusty pulley丨Sliding doors丨How to repair a rusty pulley on a sliding bathroom door

09:33

How to Make Mini Ultra Long Life ，Bluetooth Nondestructive High Fidelity Amp Box

02:34

How to simply turn a Mini SIM card into a Nano SIM card without borrowing professional tools

03:43

How to make a lithium battery power supply 3V for the electronic blood pressure meter

04:14

Miniature and efficient 200W 12V to 220V inverter

05:08

刺激战场和平精英：会变形的吃鸡神器试玩，单发枪秒变高速连击！畅快吃鸡就靠他了

03:11

自己设计制作吃鸡神器，一键切换屏幕连击，单发步枪秒变机关枪

07:17

Winding Machine 丨How to make a transformer winding machine，Homemade transformer winding machine

05:47

555 PWM:100W Simple Circuits

06:14

Cleaning tool丨Roof waterproofing and leakage treatment

11:43

How to use a LED drive power supply to retrofit a USB 4 interface charger

06:12

Awesome Life Hacks，6V to 30000V New ideas

04:15

HOW To Make Dual Transistor 12V to 220V Inverter

06:43

3 Best LED Light Life hacks and Creative ideas

04:24

Midea kettle does not automatically disconnect the power supply failure

04:19

Electric soldering iron USB infinitely variable speed smoking machine

05:50

Comparison of Two Kinds of Tin Absorbing Tools

02:16

Reed Switch Burglar Alarm

05:30

Awesome Life Hacks For LED LIGHT

04:02

How to make a 3.7V to 220V inverter

07:08

How to modify the car CD power amplifier to eliminate interference noise

04:57

How to make USB 1.5V alkaline battery smart charger

03:04

Free energy，Awesome Ideas For DC Motor

05:18

1 Awesome Life Hacks，New ideas for soldering iron

05:48

How to make 0~230V SCR AC voltage controller

05:12

Transform the AC soldering iron into a DC 12V soldering iron

05:28

A new hacking technology and creativity for an electronic component

03:37

How to make a simple infrared remote detector

04:20

HOW to make the simplest and most practical disconnect detector，LIFE HACKS AND CREATIVE IDEAS

05:23

How to Make 1.5V Battery to 220V AC Inverter

03:37

High-power high bay light dismantling

06:17

Homemade 6V to 15000V High voltage driver

09:41

How to make a crystal column shell with an acrylic sheet

14:08

Make a sound controlled electronic dream crystal column

03:51

How to make anti-theft device with laser diode

04:25

LM317 adjustable DC regulated power supply DIY, very practical

05:37

How to make a wooden board F1 remote control racing car

04:01

LED LIGHT Life Hacks

07:13

Homemade multi-function small electric screw drill-Life hacker

09:17

How to make a charger-type charging treasure

13:32

How to make a Bluetooth desktop small steel cannon mini speaker

09:29

Testing the power generation performance of small motors with the kinetic energy of a hand drill