Air-to-air missile laser fuze launch circuit

Abstract

The invention belongs to the air-to-air missile circuit technology and relates to the improvement of the air-to-air missile laser fuze laser emission circuit. It consists of a first-level excitation amplifier, a first-level power switch and a laser emitting circuit, and is characterized in that the said excitation amplifier is composed of transistors Q1 and Q3 to form a composite amplifier; the power field effect transistor Q4 is used as a switch tube. The invention is small in size and light in weight, uses 27v low-voltage power supply, has high temperature stability, and has a steep front edge of laser signal pulses, thereby improving the distance measurement accuracy of the target. An embodiment of the invention reduces volume by 50% and weight by more than 60% compared with the original circuit.

Description

Air-to-air missile laser fuze launch circuit technical field The invention belongs to the air-to-air missile circuit technology and relates to the improvement of the air-to-air missile laser fuze laser emitting circuit. Background technique The typical transmitting circuit of the existing laser fuze is shown in Fig. 1. It is composed of a primary excitation amplifier, a primary power switch and a laser emission circuit. The primary circuit of C1, C2 and transformer T1 is composed, and its power switch is composed of thyristor Q2, resistors R3, R5 and the secondary circuit of transformer T1. Its disadvantages are: First, the volume is large and the weight is heavy. Due to the use of the transformer T1 and the high-voltage power supply, the withstand voltage requirements of capacitors and other devices are increased, which inevitably increases the size and weight of the circuit. Second, due to the influence of the ambient temperature, the trigger current of the thyristor Q...

AI Technical Summary

Problems solved by technology

Its disadvantages are: First, the volume is large and the weight is heavy.

Due to the use of transformer T1 and the high-voltage power supply, the withstand voltage requirements of capacitors and other devices are increased, which inevitably increases the size and weight of the circuit.

Second, due to the influence of the ambient temperature, the trigger current of the thyristor Q2 is prone to drift, resulting in the jitter of the emitted laser pulse shape and affecting the detection accuracy

Images