Careers were disrupted, jobs disappeared, and fortunes were lost, but the industry pressed forward as it always does. But the Electron Tube Information Council was fighting a losing battle, and within a decade of swamping engineers with this book, the industry had largely shifted to the transistor. With cherry-picked facts and figures, the booklet makes what was probably in 1960 a persuasive case for sticking with tubes. Transistors, we’re told, suffer from “spread of characteristics” that correctly describes the state of materials engineering of silicon and germanium at the time, a thornier problem than dealing with glass and wires but that they had to know would be solved within a few years. They helpfully explain that tubes are a reliable, proven technology that had powered decades of designs, and that innovations such as heaterless cathodes and miniaturization were just around the corner. The booklet was clearly aimed directly at engineers and sought to persuade them of the vacuum tube’s continued relevance and long-term viability. Just reading the introduction of this propaganda piece reveals just how worried companies like RCA, General Electric, and Westinghouse must have been as the 1950s turned into the 1960s.
The fancy booklet, with a great graphic design that our own would absolutely love, was the product of the Electron Tube Information Council, an apparently defunct group representing the interests of the vacuum tube manufacturers. To answer that question, you might have turned to this helpful guide, “ Tubes and Transistors: A Comparative Guide” (PDF link). But, your company has a long history with hot glass and no experience with flecks of silicon. The solid-state devices had only started making inroads into electronic products relatively recently, and mass production techniques were starting to drive the cost per unit down enough to start including them in your designs. He or she was perched precariously between two worlds – the proven, practical, and well-supported world of vacuum tube electronics, and the exciting, new but as yet unproven world of the transistor.
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After the site generates a problem, you have 10 seconds to download it before it is gone forever.Ĭontinue reading “Endless Electronic Problems For Solving” → Posted in Misc Hacks Tagged circuit analysis, education, ee, electrical engineering, SPICEĬonsider the plight of a mid-career or even freshly minted electrical engineer in 1960. You even get to pick the difficulty level and pick certain types of problems to avoid. For example, for a DC analysis, you can have it assign circuit values so that the answer is a value such as 45 ohms, or you can have it just use symbols so that the answer might be i 4=V 1/4R. You can also alter the general form of the problem. You can get a totally random circuit, or choose if you want to focus on DC, AC, two-ports, or several other types of problems. It can create many different kinds of electronics problems and their solutions. If you want an endless pool of solved study problems, check out autoCircuits. Many universities have most or all of their material online and you can even take many courses for free. However, if you want to, now is a great time. We know not everyone who likes to build circuitry wants to dive headfirst into the underlying electrical engineering that makes everything work.
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