Gold: Silver: Platinum:
This is a list of vacuum tubes or thermionic valves , and low-pressure gas-filled tubes , or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. Many industrial, military or otherwise professional tubes were also produced. Only a few types are still used today, mainly in high-power, high-frequency applications. Receiving tubes have heaters or filaments intended for direct battery operation, parallel operation off a dedicated winding on a supply transformer, or series string operation on transformer-less sets.
The term All American Five abbreviated AA5 is a colloquial name for mass-produced, superheterodyne radio receivers that used five vacuum tubes in their design. These radio sets were designed to receive amplitude modulation AM broadcasts in the medium wave band, and were manufactured in the United States from the mids until the early s. Variations in the design for lower cost, shortwave bands, better performance or special power supplies existed, although many sets used an identical set of vacuum tubes.
She has opened my eyes to many parts of our national culture that are not in harmony with righteousness. There is no question this is the true church. I married outside the church and have no regrets. And for your husbands, you are that person. It would likely be seen as a trial in her life.