3D Printing – Part 2

A previous post opened a conversation about 3D printing.  This technology is currently being used in the hearing aid industry, as it is in many other industries, for modeling, and even for some product fabricating, especially earmolds and custom-molded shells for in-ear products. Four different types of 3D printing processes likely to be encountered, are:…

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Batteries for Early Transistor Hearing Aids

The transition from vacuum tube to transistor hearing aids occurred in the mid 1950s.  The transistor allowed for a single power supply, and voltage as low as 1.4. Being able to operate on 1.4 volts reduced tremendously the power requirements, both in size and required voltage from that required for vacuum tube hearing aids.  Essentially…

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