Oscillating-armature motor having voltage matching
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Oscillating-armature motor with amplitude monitoring
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Circuit arrangement for rapid charging of secondary batteries (rechargeable batteries)
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Power transformer having a ferromagnetic core
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Supply circuit for motor in electric razor - has adjustable zener diode in base circuit of transistor switch
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Controlled supply circuit for razor flashlight etc. - has two transistors determining supply current and voltage controlling output power of blocking oscillator
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Power supply circuit for portable appliances - has pulsed supply switch controlled according to mains voltage level
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Kite with steering control - having two control lines on steering bar under string tensioned V-shaped section
