tube tester

For do-it-yourself repairs, a tube tester is needed, along with a knowledge of electronics.

Until the early 1980s, every Thrifty store featured a tube tester, usually located near the cosmetics display case.

The simplest of all tube testers.

A tube tester is an electronic instrument designed to test certain characteristics of vacuum tubes (thermionic valves).

The advantage of an Emission Tester is, from all types of tube testers available, it gives the most reliable warning for tube wear out.

In the day of tube radio and television it was common in the US for local drug stores to have vacuum tube testers, and sell replacement tubes.

The first tube testers were simple units designed for specific tubes to be used in the battlefields of World War I by radio operators, so they could easily test the tubes of their communication equipment.

Tube testers evolved along with the vacuum tube to satisfy the demands of the time, and this evolution faded with the tube era, yet with the High-End advent, they became a pricey piece of equipment.