Three-phase power system and other methods

Abstract

Congruent power and timing signals in a single electronic device. In an embodiment, a circuit may include just one isolation transformer operable to generate a power signal and a timing signal. On the secondary side, two branches may extract both a power signal and a clock signal for use in the circuit on the isolated secondary side. The first branch may be coupled to the transformer and operable to manipulate the signal into a power signal, such as a 5V DC signal. Likewise, the second circuit branch is operable to manipulate the signal into a clock signal, such as a 5 V signal with a frequency of 1 MHz. By extracting both a power supply signal and a clock signal from the same isolation transformer on the secondary side, valuable space may be saved on an integrated circuit device with only having a single winding for a single isolation transformer.

Description

technical field [0001] The present invention relates to circuits and methods for generating power and timing signals, and three-phase metering systems. Background technique [0002] Systems and devices often rely on two types of signals to operate. Power signals can be used to provide power, logic, and control signals within a system or device. In addition, timing or clock signals may also be used to trigger, manipulate, or otherwise control various components and circuits of a system or device. Therefore, the two signals can be used together accordingly. [0003] Many times, a system or device may have the above-mentioned signals provided from outside the system or device. That is, the power signal and / or clock signal may come from a circuit external to the system or device. For example, when monitoring overhead power lines, the equipment used for monitoring may draw power directly from the power line itself. Similarly, in a device with multiple integrated circuit (IC)...

AI Technical Summary

Problems solved by technology

Providing two isolation transformers for these two sets of signals is bulky and inefficient

Images