Electromagnetic-interference (EMI) disturbances are on the rise and becoming more intense due to more complex and powerful designs. Engineers can take several courses of action to tamp down the noise.

Newman-Kees Principal Consulting Engineer Frank Hertel says a friend recently brought him an old LPB 30-Watt AM transmitter for repair. It’s a good low-power transmitter, but this one had been abused.

There are a number of reasons why measuring the output ripple in switching regulators is such an important and delicate task. It is possible to receive erroneous readings while trying to measure this ...