The invention relates to an absorption chamber exciting device capable of automatically reducing the
power consumption. A storage battery is respectively connected with a
driving circuit, a power circuit and a biasing circuit, the
driving circuit is connected with the
driving circuit through the power circuit, a high-frequency oscillating circuit, an absorption chamber, a photosensitive element, a
photoelectric conversion circuit, an A / D (analog to digital) conversion circuit, a
microcontroller and a
voltage division circuit, the power circuit is connected with the
voltage division circuit 4, and the biasing circuit is connected with the high-frequency oscillating circuit. A single storage battery supplies power so that the size and the weight of the whole device are reduced. After the absorption chamber exciting device is electrified, the absorption chamber is automatically lightened without needing of high-
voltage excitation of a
Tesla coil through electrodeless
discharge, and the interference of high-
voltage pulse on a
signal detection circuit is prevented. Through
feedback control circuits, the output voltage of a direct-current power supply is automatically regulated, the
power consumption of the whole circuit is reduced to the minimum, and the service life of the absorption chamber is prolonged. The structure of a whole circuit is simple, the cost is low,
impedance matching among circuits and between each circuit and a load is not needed, and a complex matching debugging process is effectively avoided.