The ever innovative and prolific Mr. Woodward has offered “PWM-programmed LM317 constant current source,” an intriguing programmable constant current source which elicited a lively conversation in its ...

Incoming 5-Vpp, 10-kHz PWM causes Q2 to switch R5, creating a variable average resistance = R5/Df. Thanks to the 2.5-V Z1 reference, the result is a 0 to 1.22 mA current into Q1’s source. This is ...

Abstract: A constant current (CC) and constant voltage (CV) charging topology applied to the bidirectional wireless power transfer system for electric vehicles (EVs) is presented in this paper. It ...

Abstract: The rapid growth in HVDC (High Voltage Direct Current) grids has shown the falls of point-to-point connections ... a novel isolated hybrid monolithic modular DC-DC converter is proposed that ...

[1] High-precision electrical impedance tomography system using package excitation ...

With the development of power system, the level of short circuit current will increase accordingly. In general, the influence of the HVDC system and the new energy source is not considered in the ...

President Donald Trump has indicated to top advisers that Elon Musk could be taking a step back from his current role in the administration, sources familiar with the matter told ABC News.

Wed, April 2, 2025 at 12:16 PM UTC ...

The present dominance of dark energy may therefore decline over cosmic time, meaning it would not be a cosmological constant. The new paradigm would imply that the current expansion of the ...