随着广播设备的数字化，许多库存的电子管大都失去了用武之地，尤其是中小功率电子管，其数量还很多。这些电子管，弃之可惜，不妨将其利用起来自制成小功率电子管监听功放。下面介绍的电子管功放就是用最常见的电子管制作的，其电路图见图：前级用6N2 ...

Output jitter is commonly caused by jitter on the reference clock or by sensitivity in the VCO and other circuits to noise sources both inside the PLL block, such as thermal noise and flicker noise, ...

Austin, Texas, is the home of the United States Grand Prix and Circuit of The Americas, the country’s only purpose-built F1 track. Construction began on Dec. 21, 2010, and it wasn’t until two ...

这款报汛器无须备用电源．停电或来电时无须人工操作干预，报讯几秒钟后自动停止工作。电路很简单，供烧友制作参考。 电路见附图。使用时将报讯器插头插在市电插座上。该电路由电容器Cl降压、二极管D2整流、12V稳压管IN4742稳压后供电。刚来电时，由于 ...

CircuitPython is a beginner friendly, open source version of Python for tiny, inexpensive computers called microcontrollers. Microcontrollers are the brains of many electronics including a wide ...