A personal vaporizer is configured to be usable both for non-liquid vaporizing media and for liquid vaporizing media. In some embodiments an electrically conductive check valve blocks vaporizing media from leaking out of air intake apertures during periods of nonuse, and delivers electric power to a heating element during use. In some embodiments, no wick structures extend into a fluid chamber, but a wick extends from a wick holder downstream of the fluid chamber to a vaporizing chamber.