In rainy weather, or even when the humidity of the air is high, the inside of the shed should be kept dry and warm by means of ... The primary terminals of the transformer are to be connected with the main switch, as shown in the wiring diagramanbsp;...
Title | : | High Frequency Apparatus, Design, Construction and Practical Application |
Author | : | Thomas Stanley Curtis |
Publisher | : | - 1920 |
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