Leeds & Northrup apparatus at the Louisiana Purchase Exposition 1904 (1904)
Leeds and Northrup Company · Leeds and Northrup Company · leaf 31
5110. Double Contact Key $10 5° Tt will be noted that the same method for holding the springs is used THE LEEDS & XORTHKLl COMPANY in the design of this key as in the short circuiting key. the method beingextended to the base and three blocks. … 5290. Charge and Discharge Key $i7 50 This key is admirably adapted to charging and discharging conden-sers of small or large capacity. The insulation is very high, so that noelectricity can be lost by leakage. The insulated handle enables the keyto be used without insulating the body. Condensers
Electricity · Electrical Equipment · Electric Circuits · Electronics
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