the experiment was designed to use electronic potential clamping and detection technigueand carried out the determination of the short-circuit current of ion transport by epithelialmembrane.

This paper researches the principle in the design of input filter and voltage clamp circuit,and presents a method of phase displacement compensation of input filter.

To solve this problem, this paper proposes an novel flyback clamp circuit consisted of an additional flyback winding coupled with the boost inductor and a diode connected to the output terminal.

This paper is focusing on the implementation of a matrix converter power stage,and analyzes the construction of the mentioned power converter,the purpose of each segment,the principles in the design especially on segments like input filter, clamp circuit, safe power-up circ.

The authors proposes a two-transistor forward converter with a LCD clamping circuit.

Furthermore, secondary full-wave rectifier with a clamping capacitor is used to eliminate .

PPF can suppress switch’s drop-out peak-voltage and magnetic biasing by adding a clamping capacitor on primary side of the traditional push-pull converter’s transformer.

The results show that, the higher the rated voltage of TVS is, the lower the lightning current withstand capacity, and the lower the dispensability of the limiting voltage among tubes.