- 积分
- 1162
- 在线时间
- 3269 小时
- 最后登录
- 2020-7-16
- 阅读权限
- 70
- 精华
- 0
- UID
- 25625
- 帖子
- 1213
- 精华
- 0
- 经验
- 1162 点
- 金钱
- 1203 ¥
- 注册时间
- 2007-8-8
|
Switching Supplies
The advantages of switching supplies revolve around low weight, low material cost, and their ability to actively regulate at no additional cost.
Noise is a potential problem with switching supplies, but is solvable by physically isolating and filtering the supply, in other words, by spending money.
This can be a deep subject, but suffice it to say that I believe that some of the same caveats apply to switching supplies as linear regulators.
Again, they should be rated far beyond the nominal current requirements of the amplifier circuit, particularly as the switchers I have seen usually degrade badly beyond their ratings. Also, it helps if the power supply capacitors before and after the switcher are very substantial. This is typically not the case, since one of the primary motivations to use switchers is to save money.
More sophisticate use of switching circuitry, such as Bob Carver's is more than I would care to tackle here, but you can certainly get a lucid explanation from him.
这是Nelson Pass在Power Supplies:Commentary for Consumers一文中,关于开关电源的说法。 |
|