摘要:
A temperature controlled timer useful for controlling the application of power to apparatus such as automobile block heaters or the like. In one embodiment the time of application of power prior to a shut off time is decreased with increasing ambient temperature. In another embodiment the duty cycle of cyclically applied power is changed so that the power on period becomes shorter and the power off period becomes longer with increasing ambient temperature. Significant conservation of power results.
摘要:
An yttrium-iron-garnet (YIG) tuned reflection filter is placed in the magnetic field adjacent a High Voltage Direct Current Transmission Line. A YIG filter receives a microwave signal from a remote transmitter and the same signal is modified by the YIG filter and returned to a remote receiver wherein the current in the transmission line is evaluated.