Blow your nose. Before using the nasal spray, you need to clear your nasal passages. Otherwise, the medication might get caught in the front of the nostril, where it will be less effective. Blow your nose until you have completely cleared your nostrils. 1  Do not blow your nose after using the spray.
The basic difference is the pin of the transistor that is grounded. The common collector has the collector pin grounded, common emitter has the emitter pin grounded and common base, as you guessed it, has the base pin grounded. The following article explains the differencnes perfectly.
Resistor sources are considered to be the simplest forms of current source. They involve a circuit that contains a resistor in series with a source of voltage. The current generated from this system is equivalent to the amplitude of the voltage, divided by the resistance of the resistor. A resistor current source is generally not considered effective on its own because of the large amount of power lost in the resister, but many types of current source use elements of this setup. For example, active current sources often substitute a different element for the resistor.