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Static regenerative control of direct current motors from an a.c. source
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Load filter network
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Battery-charging system with voltage reference means with two reference levels
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Voltage regulator arrangement for generators having auxiliary excitation means
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Heat sink for electrical devices
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Instrument-type transformer arrangement for transforming both polarities of a unidirectional current
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Control system for alternately energizing two signal lamps at a predetermined rate and in a fail-safe manner
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Transistor-magnetic oscillators incorporating voltage reference means to regulate the output frequency
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Commutation systems incorporating the energy logic concept
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Instrument-type transformers for unidirectional current circuits
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Controlled rectifier systems utilizing energy logic to effect commutation
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Cooling arrangement for electronic devices
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Commutation system incorporating the energy logic concept
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