摘要
用几个简单的元器件组成一个微型监听器电路，能够发射5—8mW的输出功宰，可以达到300米的发射范围，而且清晰度和灵敏度较高，成品完成后体积较小，便于隐蔽安装，设计的简单，经济适用。
A miniature monitoring circuit with a few simple components, output power to be able to launch 5-8mW, can achieve the transmission range of 300 meters, and the resolution and high sensidvity, small volume of finished products completed, easy concealment installation, design is simple, economical and applicable.
出处
《电子世界》
2014年第23期162-162,共1页
Electronics World
关键词
晶体管
振荡频率
电压
电流
Transistor
oscillation frequency
voltage
current
