Solar panel unfolding circuit for satellite

The invention relates to a solar panel unfolding circuit for a satellite. The circuit comprises a storage battery pack, a positive line switch, a positive line on-state circuit, a detonation switch and a hot knife igniter wire. When the satellite arrives at a predetermined orbit, a panel unfolding signal is provided to the solar panel unfolding circuit, and the unfolding circuit switches on the panel unfolding switch so that the satellite solar panel is unfolded. The solar panel unfolding circuit is simple and high in reliability, can effectively avoid the influence caused by the open circuit of the detonation switch in the unfolding process of the solar panel, and improves the probability of smoothly unfolding the satellite solar panel. 本发明涉及一种卫星用太阳帆板的展开电路。该电路包括蓄电池组、正线开关、正线接通状态电路、起爆开关、热刀桥丝。当卫星到达预定轨道，通过提供帆板展开信号至太阳帆板展开电路，展开电路接通帆板展开开关，使得卫星太阳帆板展开。本发明的太阳帆板展开电路简单，可靠性高，可有效避免太阳帆板展开过程中，因起爆开关开路所产生的影响，提高了卫星太阳帆板顺利展开的概率。