According to the regulations, urban and rural residents purchase high-efficiency lighting products. After the central government subsidizes 50% of the supply price of the winning bid agreement, the autonomous region's finances will give another subsidy of 2 yuan. At the same time, it is recommended that each municipal government give each yuan another 1 yuan. subsidy. Take the example of buying a 14-yuan energy-saving lamp. After enjoying the subsidy, the residents only need to pay 4 yuan.
In addition, the party and government organs of the autonomous region purchase high-efficiency lighting products, except for the central government subsidies, the surplus is fully subsidized by the autonomous region's finances; the school purchases high-efficiency lighting products, in addition to the central financial subsidies, the autonomous region's finances subsidize 30%, the remaining 40% from its Raised in public funds.
Fast Recovery Diode (FRD) is a semiconductor diode with good switching characteristics and short reverse recovery time. It is mainly used in switching power supplies, PWM pulse width modulators, inverters and other electronic circuits as high-frequency rectifier diodes. Free-wheeling or damper diodes are used. The internal structure of the fast recovery diode is different from that of an ordinary PN junction diode. It belongs to a PIN junction diode, that is, a base region I is added between the P-type silicon material and the N-type silicon material to form a PIN silicon wafer. Since the base area is thin and the reverse recovery charge is small, the fast recovery diode has a short reverse recovery time, a low forward voltage drop, and a high reverse breakdown voltage (withstanding voltage).
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