1 results about "Source transformation" patented technology

This invention discloses a source-well mode implementation and circuit switching method in a digital source meter. First, the AC power supply is converted to DC power greater than 250V by a PFC (Power Factor Correction) circuit. Then, it is output through a two-stage composite voltage regulator circuit: the first stage is a programmable composite method of switching regulation and linear regulation, and the second stage is a source / well circuit. A comparator compares the output with a preset threshold, and the logic control circuit generates a drive signal accordingly to control the on / off state of the corresponding power MOSFET combination, thereby achieving the switching between source and well modes. This allows for precise output of (source mode) voltage or current, simultaneous measurement of (well mode) current or voltage, and fast, smooth, and overshoot-free automatic or programmable switching between source and well modes.