Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)
Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 22
eds only to be divided by the number of lamps to find thejoint resistance. Thus, supposing each of the 12 lamps tohave a resistance of 220 ohms, the joint resistance of thecircuit would be 220/12=181/3. CHAPTER II.Electric Bells. We are now in a position to apply the electrical laws wehave just… … Figure 5 fully connected is as follows: Pressing the push buttoncloses the circuit and current at once flows from the carbonpole marked + through the push button to the binding postA on the bell frame, thence along the fine wire W to theiron frame-work supporting the armature, B. This frame- 20…
Electrical engineering
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