Single-channel preamplifier assembly for multi-channel expansion

The invention belongs to the technical field of nuclear radiation measurement, and particularly relates to a single-channel preamplifier assembly for multi-channel expansion. The single-channel preamplifier assembly structurally comprises a plurality of single-channel preamplifiers which are penetrated by high-voltage lines and low-voltage lines, wherein each single-channel preamplifier comprises two high-voltage sockets, two low-voltage sockets, one detector signal input socket and a signal output socket, the two high-voltage sockets are connected together by using a guide line, the high-voltage sockets and the detector signal input socket are connected through a high-voltage resistor, the detector signal input socket is connected to a preamplifier circuit board through a high-voltage capacitor, the two low-voltage sockets are respectively connected with the preamplifier circuit board through low-voltage power lines, and the high-voltage sockets and the low-voltage sockets are respectively connected between two adjacent single-channel preamplifiers through power switching lines. According to the single-channel preamplifier assembly disclosed by the invention, the problem of the acquisition of high-quality signals of nuclear radiation detectors which are separately arranged can be solved.