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o yess sir some of my designed ckts are doing well with 555 ic here so i need to have one please
i know about monostable , bistable & astable mode so i dont need it here , just a simple thing i want
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ohhh okkk godfreyl sir i ll follow what u are telling , would you please tell me if i connect a phototransistor so how ll be the output responce ? it depends on input or a single pulse for a short period i ll get ?
okkk sir its working well i ll proceed further later on . please let me have a circuit diagram for a sensor which in presence of our palm in its vicinity will activate itself or say will produce pulses applicable ro the op amp inputs . i mean unlike touch switch any of the circuit must not be touch to trigger itself,just t needs the presence & no costly devices like PIR sensor i need here . we already saw this application in automatic wash basins , now i need this for a very imp work , its too urgent sir simultaneously with all my work . . please help
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so i need to have one please 
