Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 194
The diagram (Fig. 129) shows the mannerin which three bells and their push buttons are joined to onebattery. The battery is made up of three cells joined in series. ^a==s==^^^^=^^ _ It is usually placed in the basement, andthe bells in thekitchen. The but-tons, as shown, areplaced at the frontdoor,… … Door Drawing Room Dining RoomFIG. 129. — Bell circuits. i8o PHYSICS OF THE HOUSEHOLD
Physics · Home Economics
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