For a long time, a common and popular method to solve current convergence problem of microwave power transistor is using emitter ballasting resistor, such as PTC, CTR thermistor, passive devices etc.
The FCL is composed of a fast switch and a PTCresistor connected in parallel.
研究了基于一次电流转移的限流器方案，它由快速开关和PTC电阻并联组成。
3
A PTCresistor according to the present invention comprises at least one PTC composition which comprises at least one resin and at least two conductive materials.