亚洲 欧美 图片 自拍 视频

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          FM beam transmitter

          FM beam transmitter

          The transmitter uses Q1 and Q2 two-stage amplifiers, and sends the amplified signal to NE555 for frequency modulation. NE555 is configured as a voltage controlled oscillator (VCO) with an operating frequency of about 50KHz. The frequency-modulated pulse flows through LED1-LED4 conversion Light pulsed LED = LED4 is driven by transistors Q3 and Q4.

          Tunnel Light

          Waterproof tunnel light,Waterproof LED 150W tunnel light,Portable IP66 mining tunnel light,IP66 explosion-proof mining tunnel light

          Jilin Province Wanhe light Co.,Ltd , https://www.wanhelight.com

          亚洲 欧美 图片 自拍 视频
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