The flame detection alarm diagram shows a circuit diagram of a flame detection alarm using a lead sulfide photoresistor as a detector element. ADS7871IDB lead-acid photoresistor has a dark resistance of lMfl, a bright resistance of 0.2Mfl (measured at an illuminance of 0.01 W/rri2), and a peak response wavelength of 2. 2ym. The lead sulfide photoresistor is in VT, and is composed of a constant voltage bias circuit. The bias voltage is about 6V and the current is about 6pA. The collector of VT. is connected in parallel with the capacitance of 68 p, F, which can suppress the high frequency above 100 Hz, making it a narrowband amplifier with only a few tens of Hz. VT2 and VT3 form a secondary negative feedback complementary amplifier, and the flashing signal of the flame is sent to the central control station for alarm processing after being amplified by the second stage. The constant voltage bias circuit is used to change the resistance value of the device without affecting the amplitude of the output signal after replacing the photoresistor or for a long time, thereby ensuring that the flame alarm can work stably for a long time.
Automotive Push Button Switches
Automotive Push Button Switches
Automotive Push Button Switches, also called Push Button Starter Switch, is one kind of switches to turn on the car. As for the Automotive Switches , we have Automotive Push Button Switches, Automotive Toggle Switches, Automotive Rocker Switches, Automotive Rotary Switches and Automotive Battery Switches for our customers to choose.
The Starter button switches mainly based on the car button switch. The main function is to start the car, switch on the car power supply or start the car internal equipment. The automotive starter switch is mainly based on DC current and voltage, and has a wide range of dimensions. The installation size ranges from 8.5mm to 22mm directly.
Our push button switches can be matched with the dust proof and waterproof cap. When the car equipment is working in a harsh environment, our Yeswitch car start button switch could still be regularly used.
Our variety of Automotive Momentary Push Button Switch, can match different colors and different appearances of dust-proof and waterproof caps, dust-proof and waterproof grade can reach IP67 grade. Along with excellent electrical life times, high load current and voltage, our Yeswitch start button switch is not limited to automotive field , heavy machinery, and ships are also widely recognized by customers.
Automotive Push Button Switches,Antique Push Button Switch,Micro Push Button Switch,Mini Push Button Switch
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