CrazyEngineers Forum - Electrical & Electronics Engineering |
Posted: 22 Feb 2011 02:09 AM PST hey friends, after the history of micro processor now i came with the history of micro controller as i learned in my class today i known that history of micro controller is great thing and i am posting it here the first micro controller is hitachi hmcs 40 it is 4 bit micro controller it is a basic controller and mostly used in small applications next coming to 8 bit micro controller here occur's two generations or types these two are designed by intel these two controllers are 8048 and 8051 these two are also used in small applications and 8051 is mostly used in small applications like speed control of D.C machines next intel given the 16 bit micro controller it is intel 80c196 this is mostly used in pwm applications next coming to the 32 bit micro controller this is also designed by intel it is intel 80960 it is mostly used in sophisticated technology like air craft landing and it is in avionics i believe all the CEans know about avionics this all about the micro controllers history hope all understood this topic and please post any additional matter is there if i had missed |
Series and Shunt diode Clipper Circuits Posted: 21 Feb 2011 10:12 AM PST why in a series clipper diode circuit,during the forward biasing half cycle the voltage across the diode rises according to the input sinosuidal supply whereas in shunt type clipper diode circuit,during the forward biasing half cycle it stuck only to its barrier voltage level???? |
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