Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 186
m DIRECT CURRENT LAMPS L^EH XT DIRECTI I CURRENT LAMPS ALT-DIR-C-ROTARYCONVERTER Fig. 73. Static converter 142. An apparatus, much simpler than the rotary convertersdescribed in § 141, but doing almost the same service, is thestatic converter, invented by Cooper Hewitt, and first exhi-bited in… … The static converter, in its present form, consists of a glassglobe (see fig. 74) about 8 inches in diameter, on the top ofwhich there are four glass tubes (1, 2, 3, 4),closed at the outer ends and sealed into theglobe, in which four positive iron-cup termi-nals are sealed. Three of these…
Electrical engineering
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