The solution? A pulley system to make everything easier. The concept is simple. [Barnso]’s system uses three pulleys. The headphone cable goes to the PC, and then runs over the first pulley.

Of course, modern CVT variations are far more advanced than da Vinci's designs. The most common CVT uses a variable pulley system. The simplified version features three parts: an input pulley powered ...

The solution? A pulley system to make everything easier. The concept is simple. [Barnso]’s system uses three pulleys. The headphone cable goes to the PC, and then runs over the first pulley.