JK-mSMD200/8V

The circuit is shown in the figure. It consists of a pair of complementary signal detection control tubes VT1 and VT2 and an 8-sound effect music integrated circuit HY-88. It uses a micro speaker to ...[Details]

Selling the factory for 630 million and laying off 1,500 employees, can the former Android king make a comeback? Recently, HTC, one of the early Android "kings", was reported to be "done" because i...[Details]

This article introduces a simple method for estimating the transient response of a power supply by knowing the control bandwidth and the output filter capacitor characteristics. This method takes a...[Details]

There are four port usage combinations of TIM2 of stm32: 1. When not remapped, the default four IO ports of TIM2 are PA0, PA1, PA2, and PA3 2. To use the port combination of PA15, PB3, PA2, and PA3...[Details]

       Redmi has officially announced that it will officially launch the first model of the K50 universe next month, and announced that the phone will be equipped with a Snapdragon 8 processor, a dua...[Details]

On February 28, Nokia (HMD Global) launched three new entry-level smartphones at MWC 2022. The three new models are Nokia C21, Nokia C21 Plus and Nokia C2 (second generation). They are all designed t...[Details]

The radar level gauge uses electromagnetic waves to transmit to the liquid surface of the detected container through an antenna. When the electromagnetic waves hit the liquid surface and are reflecte...[Details]

       Recently, there have been many reports that Apple will release its first headphone, AirPods Studio. It is reported that this headset is positioned as high-end and may be released in the near f...[Details]

Tianyin Holdings stated on the interactive platform that the company is currently Huawei's main agent for sales in China and overseas. The company will continue to deepen cooperation with Huawei in r...[Details]

Some household appliances, such as black and white TVs, have strict requirements on the voltage fluctuation range of 220V AC mains. If the voltage fluctuates too much downward, the image will be dist...[Details]

According to foreign media reports, the US Patent and Trademark Office recently officially granted Apple two patents related to Project Titan. One of them proposes a technology that can determine the...[Details]

Lying at home like Ge You, with express delivery automatically delivered to your door... This scene must be what thousands of "homebodies" are looking forward to! And this day is quietly approaching....[Details]

Designing a high-frequency transformer is a difficult point in the power supply design process. Taking the feedback current discontinuous power supply high-frequency transformer as an example, we wil...[Details]

At the Sogou Dictation Service Opening and AI Innovation Alliance Conference, Wang Xiaochuan was the first person to try out the "recorder". After Sogou recently opened its dictation service, recordi...[Details]

On November 8, Infineon Technologies AG and Marelli, a supplier of mobility technology for the automotive industry, collaborated to develop advanced E/E architecture solutions. The collaboration co...[Details]