ALEXANDRIA, VA.—As television engineers age, those brought up in the era of analog signals and the subsequent transition to digital are retiring and talking hard-earned knowledge with them. Younger ...

Connecting a 600Ω audio circuit to a 50 or 75Ω circuit or test instrument requires an impedance-matching circuit or, when isolation of the circuits is necessary, a transformer. Both approaches offer ...

Audio systems performance is limited by the worst link in the signal chain. All too often the weakest link is the speaker impedance matching. New circuits make the job easier, and offer more ...

Ex-movie theater projectionist Steve Guttenberg has also worked as a high-end audio salesman, and as a record producer. Steve reviewed audio products for CNET and worked as a freelance writer for ...

Q: The percent impedance of a transformer is also the voltage drop of the transformer at full load. What is the voltage drop of a transformer at various other load levels, i.e. 25%, 50%, 75% or in ...