Patent
Current detector in combination with an electrical apparatus
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TLDR
In this paper, a switch which is movable from one condition to another on application of power to the switch and which is held in the moved condition, as long as power is applied to the switched switch, is described.Abstract:
A device for incorporation into the power supply circuit of an electrical apparatus comprising (a) a switch which is movable from one condition to another on application of power to the switch and which is held in the moved condition, as long as power is applied to the switch; (b) a signal emitter adapted to emit a power signal of short duration and being connected to the switch so that on emission of the power signal the switch will be moved to the other condition for the duration of the power signal; and (c) a current detector capable of detecting when a current flows in a line and being connected to the switch to supply power thereto when current flows in the line. The current detector may be a light emitting diode (L.E.D.) and a light detector arranged to transmit current to a relay switch coil which is electrically connected to the line by a current transformer.read more
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References
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Patent
Optically sensitive control circuit for a food browning device
TL;DR: In this article, a control circuit suitable for use with a toaster or other food browning device which utilizes a radiant energy source to brown food is disclosed, where a light sensitive variable resistor, or photocell, is optically coupled to light reflected from the food being browned in the device.
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TL;DR: In this paper, an electric temperature control system and particularly water heating control systems were proposed. But their main object was to provide a relatively simple all-day water heating system, which was based on the concept of thermal thermal control.
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TL;DR: In this article, a temperature control circuit for graphite tube atomizers of an atomic absorption spectrometer is presented, where the photocell output actsuate the relay so that the tube power circuit will switch from the high voltage rapid heating mode to a controlled lower voltage that will automatically maintain the constant predetermined tube temperature.