语音启动的开关和放大器 某些应用中,如
2009-10-07 15:28
声控开关及放大器原理图
2006-04-16 17:23
声启动开关及放大器电路图
2009-04-13 08:44
,当施加到基极引脚的电压较低(约0.7V以下)时,集电极和发射极处于关断状态,电流不流动。 晶体管的开关工作就像使用基极作为开关来打开和关闭从集电极流向发射极的电流。 作为放大器使用的晶体管 下面通过比较自来水供水机
2023-02-03 11:42
Cirrus Logic公司的SA306是主要用于驱动三项无刷直流(BLDC)电机的全集成开关放大器。三个独立的半桥通过微控制器或DSC控制可以提供超过15A的峰值输出电流。所提供的热量和短路监控能够向微控制器发出故障信号,进而采取合适的行动。
2021-02-03 09:44
The soft switching is enabled by a BD131 transistor wired as a switch in emitter follower configuration. The collector is wired to a permanent supply voltage, the 2H series inductor serves only to filter out power supply hum. This inductor is not too important and may be omitted if the DC supply is adequately smoothed. The control voltage is applied to the BD131 base terminal, the 10u capacitor and 10k resistor having a dual purpose:-i) a gradual charge of the 10u capacitor ensures that the transistor will switch linearly from 0 volts to full supply, andii) serves as a hum filter ensuring a very smooth dc supply to the amplifier and tone controls.LED1 will light when the amplifier is on. The control voltage should ideally be 0 volts when the amplifier is off and full supply voltage when on. The LM380 is shown driving two 8 ohm loupspeakers, the load is therefore 4 ohms. The 4u7 capacitor acts as a crude crossover, lower frequencies are impeded and so this loudspeaker may be a "tweeter" type.
2006-04-15 13:19
放大器。MA2304xN MERUS™系列让工程师无论在低输出功率还是高输出功率下皆能实现出色的能效,适用于无线和蓝牙扬声器、音响,以及用于会议和多声道室内音响系统的电池供电设计。 贸泽电子现在
2023-04-04 14:29
MA2304PNS为借助应用/连接处理器进行音频处理的系统提供更简单的音量控制和限制器。MA2304PNS能够提高电池续航能力并降低电池成本,因此非常适合电池供电的扬声器应用。
2023-04-05 10:29
什么是 D类音频功率放大器?用一个通俗易懂的话来说就是:D类音频功率放大器就是一个开关放大器。
2022-10-08 10:25
ClassD放大器与ClassA、ClassB、ClassC放大器有本质的区别,因为它是基于一种被称为开关放大器的结构设计的功率
2023-01-10 15:02