lab test n°1

• Design an amplifier with a gain of 10V/V that can deliver a balanced signal in the output

common mode signals are trasmitted via a single shielded cable while differential mode signals are transmitted by means of two cables ( in the audio domain they are referred as balanced cables).

in the following links you can find more details

• segnali bilanciati
• balanced and unbalanced signals 
• differential mode and common mode signals 

Connect the device to a voltage subtractor ( i.e. a differential amplifier) and check that the output common mode signal of the resulting system is the input original signal amplified 10 times. Which are the advantages of this system?

• Design an amplifier that can offer a continuously variable gain between -20 and +20 dB.

• Analyse the output signal of the following comparator circuits:

 write a report about your results