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Battery powered receiver, hand crank generator powered transmitter. Vehicular Radio Set - World War II era. 6/12 V dynamotor power, ... Technical Manual TM 11-275 ...
Another common type is the windup or crank-powered flashlight, with the light powered by a battery which is recharged by a generator turned by a hand crank on the flashlight. One minute of cranking typically provides about 30 to 60 minutes of light.
U.S. soldiers using a GN-45 hand crank generator to power their radio set during World War II During World War II , U.S. troops sometimes employed hand crank generators, GN-35 and GN-45, to power Signal Corps Radio transmitter/receivers . [ 10 ]
A telephone magneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from a rotating armature. In early telegraphy , magnetos were used to power instruments, while in telephony they were used to generate electrical current to drive electromechanical ringers in telephone sets and activate signals ...
In present Freeplay radios and other products, clockwork mechanisms storing energy in a mainspring have now been replaced by small batteries charged by cheaper hand-crank generators. [9] Freeplay Energy produces a variety of consumer devices in addition to radios, including flashlights, lanterns, mobile phone chargers, and foot-powered generators.
According to F. Lisheng and T. Qingjun, the hand-crank of the rotary quern was different from a crank, which was the combination of a hand-crank and a push-and-pull connecting rod by a hinge. [7] The Antikythera mechanism, dated to around 200 BC, [25] [26] used a crank as a part of its mechanism. [27]
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