We use two different bands for GSM/DCS communications; GSM900 and DCS-1800. Which one is the better of the two in terms of quality and coverage?

5132

Explain the construction of a jfet

675

Describe the principle of step-up chopper. Derive an expression for the average output voltage in terms of input dc voltage & duty cycle?

653

please send me earlier question papers of rrb je(signal)at my id arvind44444@gmail.com

1783

Explain what does the arrow head represent in the schematic symbol of a p-n junction?

637

What are digital electronic flip flops, state the different types of flip flop and their uses?

510

What are the features of instrumentation amplifier?

640

Explain conductivity?

556

What happens to the conductivity of semiconductor with the rise in temperature? Compare with the conductivity of metals.

575

how work microwave anteena in mobile tower

1742

Pls send me the papers for Section engineer exam for railways.Its on 9th oct-08.Its urgent.My id is abhay_jg@yahoo.com

1781

is the toogle case and race around condition equal?

1520

In explain what way is the voltage follower a special case of the non-inverting amplifier?

568

How to program micro controller?

3250

what is the different between gsm and cdma?

1768