As shown, 555 and RP1, R2, and C1 form an astable multivibrator. Adjusting RP1 changes the oscillation frequency and duty cycle. The pulse it outputs triggers the trigger consisting of VT1 and VT2. V01 and V02 can alternately trigger two thyristors. As soon as our company was established, the small size 4 wire resistive Touch Screen was first put into production,it range in size from about 2 inch to 22 inch,we provides a wide range of customization options to meet your requirements, including screen size, FPC outlet location, length, ITO glass thickness, LOGO and matte anti newton ring, bright surface treatment such as anti newton ring.we supply the best resistive touch screen,commercial touch screen,Glass touch screen, POS touch screen,GPS touch screen,Car touch screen,no drifting touch screen,stable touch screen,long life touch screen,high sensitive resistive touch screen,cheapest resistive touch screen.If you're interested 4 wire resistive touchscreen ,we are your best choice. Monitor Touch Screen Panel,4 Wire Touch Screen Panel,Resistive Touch Screen,Usb Controller Touch Screen,4 Wire Resistive Touchscreen,Best Touch Screen HuiZhou GreenTouch Technology Co.,Ltd , https://www.bbstouch.com
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