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This paper presents a CM noise suppression technique from self-calibration of a 20-Gb/s source-series terminated (SST) driver using an on-chip process monitoring circuit designed and simulated in a 65-nm CMOS process. An unbalanced charging and discharging loop results in an asymmetric rise and fall time of the output signal and is an intrinsic source of the CM noise. For an SST driver, the CM noise...
In this paper, we propose a mid-range wireless power transfer system with CCL type resonant topology on source side for monitoring equipment power supply on electricity pylons. In consideration of low coupling coefficient caused by long transmission distance, a relatively high current level should be kept when using the traditional serial-serial topology(referred to as S-S topology), which increases...
This paper presents a novel process variation compensation technique for semi-self impedance calibration of the transmission line driver implemented with the Low Voltage Swing Terminated Logic (LVSTL). The impedance calibration in the pull-up and pull-down networks of the driver circuits are analyzed and designed based on the JEDEC LPDDR4(Low Power Double Data Rate) standard. Based on the impedance...
The change of current value caused by turn-to-turn insulation fault of dry-type air-core reactor is so little that the failure detection is difficult to be carried out. In order to solve this problem, a new monitoring method based on impedance variation is proposed in this paper. A circuit model of the dry-type air-core reactor turn-to-turn insulation fault is established and the numerical method...
Batteries are becoming integral part of day to day life with increase in local generation. A more effective battery monitoring and Management techniques are required to maintain the batteries. Impedance based monitoring is becoming a very effective procedure to do the same. Various techniques have been proposed. The Randels model is the most appropriate circuit to explain the phenomenon of the battery...
For mid-range wireless power applications, the load is normally far away from the power source. In this project, a new method is proposed to determine the load impedance and load power without using any direct output feedback. Based only on the information of the input voltage and current, the load impedance and load power can be monitored and controlled without using any wired or wireless feedback...
This paper presents a new substation battery internal resistance on-line detection method based on DC discharging internal resistance detection and AC impedance detection. DC internal resistance of battery can be obtained by means of calculating the difference of electromotive force of cells and discharge voltage of load during the battery discharge. Four-wire AC impedance test results obtained online...
Distance relays used for transmission line protection can mal-operate on power swing. This paper presents protection schemes for out of step detection based on synchronized phasor measurement. Voltages and currents at both the ends of a transmission line are used to derive the parameters required for designing these schemes. The proposed schemes can distinguish stable and unstable power swing and...
The trend of many types of electronic products is toward higher operating frequencies. At high frequencies, the signal propagation is concentrated at the surface of interconnects, which is known as the skin effect. Therefore, even a samll crack at the surface of a solder joint may directly influence the performance of high speed electronic assemblies. Degradation of solder joints, such as cracking...
RS232 interface executes the role of Transportation and Communication, which has became the important interface between MCU of embedded system and peripheral equipment. Because RS232 mainly work in bottom of communication protocol, so it is important to protect the infrastructure of RS232. In test, pulse double electromagnetic is pulled into RS232 data transmission lines by coupling clamp, simulated...
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