How to use in-sentence of “vacuum tubes”:
– Machines with many vacuum tubes were known to break a lot.
– However, electronic amplifiers with vacuum tubes were heavy, and they produced a lot of heat.
– In the 21st century, vacuum tubes are rarely used in common electronic equipment.
– When vacuum tubes and transistors were invented, it became possible to build electronic amplifiers.
– Without this realization, vacuum tubes would never have been invented.
– Starting in the 1900s, devices used glass or metal vacuum tubes to control the flow of electricity.
– The developments that made TAT-1 possible were coaxial cable, polyethylene insulation, very reliable vacuum tubes for the submerged repeaters and an improvement in carrier equipment.
– Transistors can be made much smaller than vacuum tubes and they can work using less energy.

