EMC Question of the Week: February 2, 2026

Switching voltage source driving a 50-ohm load through a 50-ohm transmission line

A digital clock driver transmits a signal on a 50-Ω coaxial cable to a 50-Ω load.  What value of source resistance maximizes the power delivered to the load?  

  1. 0 Ω
  2. 50 Ω
  3. 100 Ω
  4. depends on cable length 

Reveal Question of the Week - Answer 260202