The intrinsic layer of the PIN diode is a layer without doping, and as a result this increases the size of the depletion region - the region between the P and N layers where there are no majority carriers. This change in the structure gives the PIN diode its unique properties.
Be aware of possible complications. By weakening your immune system, HIV can leave you vulnerable to certain cancers and infections. These infections are called opportunistic because they take the opportunity to attack you when your immune system is weak.
The person becomes vulnerable to serious illnesses. This stage of infection is known as AIDS. Signs and symptoms of late-stage HIV infection may include: 1  blurred vision. 2  diarrhea, which is usually persistent or chronic. 3  dry cough. 4  fever of above 37C (100F) lasting for weeks. 5  night sweats. 6  permanent tiredness. 7  shortness of breath.