Here is the 220V AC lamp touch dimming circuit Just touch this touch dimmer and you can increase the light in
There are two common working modes of DCDC switching power supply, namely PWM mode and PFM mode, which we often
In PCBA processing, two common welding methods are reflow soldering and wave soldering What is the role of refl
Here is the circuit design of vibration sensor alarm Initially, when the power switch S1 is turned to the "on"