The ultrasonic transmitting circuit composed of discrete components is shown in Figure 1-1 as the simplest ultrasonic transmitting circuit composed of discrete components. The transistors VT1 and VT2 in the circuit form a strong feedback frequency stabilization oscillator whose oscillation frequency is equal to the resonance frequency of the ultrasonic transmitter T-40-16. At this time, the T-40-16 acts as a feedback coupling element and an output transducer. The oscillating waveform at both ends of T-40-16 is similar to a square wave, and the voltage amplitude is close to the power supply voltage. When the switch S is pressed, the T-40-16 can emit a series of 40KHz ultrasonic signals. The working voltage of this circuit is 9V, the working current is 25mA, and the control distance can reach 8m. COB Light
COB LED par light for theatre, productions, TV studio, stage
Description:
COB200-2in1 is a professional theatre fixture that utilizes a 200W warm-white and cold-white COB LED with a color temperature of 3200k-6000K. Users are able to creat a customized color tempreature via a DMX Controller or set directly on the display menu. It offers a high-power light output with rich hues and smooth color mixing for stage and wall washing. The double bracket makes installing easily and versatile.
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