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> [ZT]0-30V/2A电源的制作
猫猫草
post 2008-04-28 17:28:23, Mon
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猫猫猫
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Group: Power Cat
Posts: 626
Joined: 2006-12-8
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此电路用一片电压调压专用电路LM723（IC1）为核心，调节P1可实现输出电压从0-30V连续可调，Q1为电流驱动扩展用（需用散热器）。R3供保护电路用的取样电阻。该电路简单可靠、其稳压性能指标也非常不错。电路器件参数见附表。
Attached Image


R1=1K2
C1=4700uF/63V
IC1=LM723
V1=0-30V DC
R2=680R
C2=100nF63V MKT
Q1=2N3055
TR1=220VAC/ 27V 4A
R3=0.33R/5W
C3=4.7nF63V MKT
B1=100V 5A桥堆
S1=2×10A 开关
R4=15K
C4=220uF/63V
F1=0.5A 快速熔断保险
R5=3K9
P1=4K7
F2=2A 慢速熔断保险
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