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A SURVEY OF EARLY POWER TRANSISTORS by Joe A. Knight TUNG-SOL 1950s/60s GERMANIUM POWER TRANSISTORS |
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It appears Tung-Sol was working with Motorola to develop the necessary 12-volt car radio tube compliment and was thus allowed to use the just released Motorola TO-3 "2N-176" Power Transistor design. As is shown above, Tung-Sol coincidentally called their new device the "TS-176" and listed it for a couple more years in their inventory. It too was a Baby-Blue. By 1957, Tung-Sol released two more TO-3 Power Transistor types, these made for switching circuits and called the "TS612" and "TS613". Another TO-3 device, the "TS614" followed in early 1957. These were all rated at 15 watts of dissipation. |
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COPYRIGHT © 2007 by Jack Ward. All Rights Reserved. http://www.transistormuseum.com/ Joe A. Knight Early Power Transistor History – TUNG-SOL Page 3 |
