Abstract: A phase lag adjustment in an electric meter includes a single-turn loop of large cross section encircling substantially the entire flux generated in a voltage stator which interacts which the disk of the electric meter. A variable inductor, in series with the single-turn loop, changes the effective impedance of the single-turn loop thereby adjusting the phase angle of the flux produced by the voltage stator. The variable inductor consists of a small number of turns of copper having a large cross section within a cylindrical shell made of silicon steel. Threaded bushings at each end of the cylindrical shell accept an adjusting bolt from either direction to permit adjustment from either end of the variable inductor. The silicon-steel cylindrical shell is clamped directly over connecting tabs of the cylindrical shell without insulation therebetween. The high resistance of silicon steel can be ignored in parallel with the much lower resistance of the copper turns.

Abstract: A memory programmer interface for an electronic demand register includes conductive pads on a circuit board within a housing of the electronic demand register and spring-pin connectors which fit through slots in the housing of the electronic demand register into resiliently urged contact with the conductive pads. In the preferred embodiment, the conductive pads are enlarged solder pads associated with a non-volatile memory in the electronic demand register. A pair of alignment pins on the memory programmer guidingly enter alignment holes in the housing and/or the circuit board of the electronic demand register to provide alignment between corresponding ones of the conductive pads and the spring-pin connectors. The memory programmer includes a power source sufficient to energize at least selected portions of the electronic demand register and a control signal generator for generating control signals including a signal for maintaining a microprocessor in the electronic demand register in the reset condition.

Abstract: A non-volatile memory copy programmer provides temporary storage into which data can be read out from a non-volatile memory of an electronic demand register of an electric meter and from which the stored data can be written into a non-volatile memory in a replacement demand register. The non-volatile memory copy programmer also produces control signals for controlling reading and writing in the non-volatile memory. A power monitor circuit in the demand register enables the storage of data from a volatile memory to the non-volatile memory in the event of a loss of power and enables restoring the data from the non-volatile to the volatile memory when the power is restored.