Goldshell Miner:Goldshell Mini-DOGE Pro,Goldshell LT Lite,Goldshell X5,Goldshell LT5,Goldshell LT5 Pro,Goldshell LT6,Goldshell Mini-DOGE
Goldshell Miner is an industry-leading technology company. The company was founded in 2017, we are focusing on high-performance miners and application fields. In the past few years, Goldshell Miner has successfully completed the R&D, mass production, and sales of multiple miners in LTC, CKB, HNS, Sia and other cryptocurrencies. The headquartered is based in Shanghai, Goldshell Miner has offices in Hangzhou, Hong Kong, Singapore,etc. The current R&D personnel account for more than 70% of the company. The core team has more than 10 years of experience in the integrated circuit field. Aiming to become an excellent blockchain computing power provider, and promoting the development of the industry, Goldshell has established an efficient operation system from algorithm research, batch production and delivery, which based on a strong core team and excellent system capabilities. Goldshell continuously improved the computing performance and competitiveness of products, to provide high-performance and high-reliable computing infrastructure and services for the development of digital economy. Especially our household miner-BOX series, allow more customers to join in the market since our product are small, quiet, affordable, and friendly to beginners so that everyone could start mining at home.
goldshell mining machine,goldshell ltc miner,goldshel lt5,goldshell mini doge pro,goldshell lt6 Shenzhen YLHM Technology Co., Ltd. , https://www.ylhm-tech.com
The Cruiser C1 multimedia audio consists of a power amplifier main unit, two small speakers and a subwoofer. The amplifier host has only one dictionary size, which can be conveniently placed on the computer desk. It abandons the design of the built-in amplifier of the subwoofer, overcomes the shortcomings of the desktop can not be placed, and the control is inconvenient; the high-fidelity headphone output terminal is added to realize the separate listening function of turning off the headphone and disconnecting the speaker. The power amplifier circuit does not use the TDA2030's general-purpose method like most active speakers, but uses the TDA7379 four-channel power amplifier IC. Among them, two OTLs are used for left and right channel output, and two OTLs form a BTL power amplifier circuit, so that the output power of the subwoofer reaches 20W.
The figure below is a circuit diagram of the whole machine drawn according to the object. The input port lotus socket can be connected to VCD, DVD and other audio and video equipment, 3.5mm socket can be connected to MP3, Walkman and so on. The power supply part is also quite special. The dual 13V is full-wave rectified into 18V. The main power supply is used as the power supply for the main power amplifier TDA7379 and the positive power supply for the two dual operational amplifiers NE5532 and 4558. Among them, one channel 13V provides negative power to the two op amps after half-wave rectification and 79LO9 regulation. The input signal and the two sets of power supplies are connected to the front circuit through the CN-VOL socket. The TDA7379 is designed on a circuit board with power supply circuits and input and output sockets. The left and right channels and the subwoofer signal are connected to the front board through CN-TONE. The (7) pin of the TDA7379 is the standby control pin. After pressing the standby switch, the 18V power supply is grounded via two blue high-brightness LEDs and two 1kΩ resistors. The blue light lights up the volume control and provides the (7) pin. A high level causes the amplifier to start working. When the standby switch is lifted, the standby circuit is turned off, the LED is turned off, and the amplifier is turned off. However, the headphone amplifier is still working, so that when it is alone, it is in a state of power saving and the speaker is muted.