171493 ⎘
Arrangements for measuring currents or voltages or for indicating presence or sign thereof; Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values; Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups , , comparing DC or AC voltage with one threshold AC voltage or recurrent signals
DYNAMIC TIMING FOR SHUTDOWN INCLUDING ASYNCHRONOUS DYNAMIC RANDOM ACCESS MEMORY REFRESH (ADR) DUE TO AC UNDERVOLTAGE
#2PHOTOVOLTAIC SYSTEM, RELAY DETECTION METHOD, AND POWER SUPPLY SYSTEM
#3Dynamic timing for shutdown including asynchronous dynamic random access memory refresh (ADR) due to AC undervoltage
#4Voltage monitoring device
#5Power transmission through a single conductive element
#6ELECTRICAL POWER SUPPLY SYSTEM
#7System for indicating the presence of voltage in a high-voltage network
#8Interference suppressor for a direct current circuit
#9Signal processing apparatus, control method, image pickup element, and electronic appliance
#10Phase loss detection in active front end converters
#11PHASE DETECTION APPARATUS FOR ALTERNATOR AND METHOD THEREOF
#12Ground potential rise monitor
#13Polyphase source detecting circuit
#14Analog comparator with precise threshold control
#15Oscillation detecting apparatus and test apparatus