Method for synchronizing several generators which superimpose the line of a high-voltage network with control currents of non-network frequency, for example a control frequency used for switching purposes
DE488461C
Device for superimposing medium-frequency currents over a high-voltage network with the mediation of an oscillating circuit
DE571332C
Remote control of resonance relays via existing line networks using audio-frequency energies
DE459690C
Device for remote control of clocks with the help of a normal clock
DE471748C
Resonance relay
DE477746C
Control device for the pointer position of clocks influenced by a current surge
DE495034C
Changeover relay for electrical multiple tariff meters
DE452273C
Compensating capacitor for wireless telegraphy or telephony receivers
DE487966C
Device for generating a frequency band within a specific time period by an alternating current generator driven by a direct current motor
DE446054C
Signaling device for trams
DE449102C
Self-seller for electricity, gas, water or the like with charging of ancillary fees
DE452696C
Drive system for Ferrari counters
DE437641C
Electrical counter based on the Ferraris principle
DE407112C
Counter aggregate, consisting of two counters, one of which measures the algebraic sum of active and reactive consumption of the inductively loaded system, the other measures the same size of the capacitively loaded system
DE395756C
Electricity meter for measuring the time integral over the square value of the electricity consumed
DE336780C
Electricity meter
DE335620C
Coin counter for self-sellers of electricity
GB191208226A
Improvements in or relating to Electricity Meters.
