an oscillator is associated with an basic amplifier for producing oscillations,for production of oscillations the amplifier needs some input voltage but under the oscillation condition the input voltage is zero,why?

5 Answers  

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Explain the construction and application of a jfet.

0 Answers  

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What is meant by bidirectional or half-wave ac voltage controller?

0 Answers  

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Myself Mayuri Parekh.I have technical test for ME in LD engineering college,gujarat.plz send me technical questions and also answers so i can practise.plz send me as early as posibble.my wxam will be in MAY 2009.

3 Answers   LD College,

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the two inputs to and gate are 4V and 5V.if threshold voltage is 0.5V.then what is output of and gate?if input voltage is reduced to 0.52V each,then what will be output?

2 Answers   Intel,

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no of timers of 8051

10 Answers   ONGC,

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what is use of capacitor in pcb circuits which work on dc but capacitor blocks dc..?

4 Answers   L&T, Sibylsys,

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what is asynchronous data transfer???

0 Answers  

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Different types of communications? Explain.

0 Answers  

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1.antenna is passive or active?? add why? 2.diff b/w tch drop & tch block?? 3 diff. b/w sdcch drop & sdcch block??

0 Answers   Ericsson,

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What is difference between 2 quadrant & 4 quadrant digital dc drive.

0 Answers   Siemens,

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What is negative frequency?

0 Answers  

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