H
Hesambook
Guest
嗨谁能帮助这个电源电路给我吗？开关电源（+或 - 9V，3A）输出感谢。
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K
Khabree
Guest
你忘了写的输入电压是多少？
H
Hesambook
Guest
高输入电压不是很重要，我必须提供从减速机变压器，如（220VAC至12VAC）它。问候。
W
wolly
Guest
K
Khabree
Guest
您可以从安森美半导体为UC3842或UC3843的应用笔记和电路。也可用于DC - DC转换器，你可以选择IC LM3524或SG3525，你可以找到这些IC从网上大量的电路。
N
Nahian
Guest
[报价= Hesambook]喜谁能帮助这个电源电路给我吗？开关电源（+或 - 9V，3A）输出的感谢。[/QUOTE]使用7809和3ohm阻力