guoke1930 发表于 2014-2-19 21:29:24

低噪声12V电源设计,半导体制冷片

请问谁有12V电源的低噪声的设计方案,要使用半导体制冷片,保证1V时有200mW。
感谢哪位高手给个设计方案,谢谢了,或者给点好的建议。。。

cc224 发表于 2014-2-19 22:12:04

半导体制冷片要低噪声做什么

xivisi 发表于 2014-2-19 22:14:06

大 电流 的家伙为啥要低噪声?

semonpic 发表于 2014-2-19 22:20:22

只冷片这玩意应该是电流控制型的

guoke1930 发表于 2014-2-19 22:51:27

cc224 发表于 2014-2-19 22:12
半导体制冷片要低噪声做什么

要求就是要使用帕尔贴器件
The proposed supply exists of two Peltier elements(包含两个帕耳帖元件), that are thermally coupled to a hotplate(电炉) to transfer heat energy in electric power(使用电功率传输热量). Furthermore a (PC) forced cooling(强制制冷) with heat pipes(热导管) is used to help regulating the output voltage of this supply(调节输出电压). The basic idea to make use of(利用) Peltier elements is that they do have a low impedance(低阻抗) and it is presumed that they will have little noise contribution(假设他们低噪声). Higher frequency components(高频分量) will be filtered out(滤掉) by the large time constant(大时间常数) of the temperature gradient(温度梯度).

guoke1930 发表于 2014-2-19 22:51:57

xivisi 发表于 2014-2-19 22:14
大 电流 的家伙为啥要低噪声?

要求低噪声,12V可调

The proposed supply exists of two Peltier elements(包含两个帕耳帖元件), that are thermally coupled to a hotplate(电炉) to transfer heat energy in electric power(使用电功率传输热量). Furthermore a (PC) forced cooling(强制制冷) with heat pipes(热导管) is used to help regulating the output voltage of this supply(调节输出电压). The basic idea to make use of(利用) Peltier elements is that they do have a low impedance(低阻抗) and it is presumed that they will have little noise contribution(假设他们低噪声). Higher frequency components(高频分量) will be filtered out(滤掉) by the large time constant(大时间常数) of the temperature gradient(温度梯度).

guoke1930 发表于 2014-2-19 22:52:25

semonpic 发表于 2014-2-19 22:20
只冷片这玩意应该是电流控制型的

没用过这玩意,求指导明路

The proposed supply exists of two Peltier elements(包含两个帕耳帖元件), that are thermally coupled to a hotplate(电炉) to transfer heat energy in electric power(使用电功率传输热量). Furthermore a (PC) forced cooling(强制制冷) with heat pipes(热导管) is used to help regulating the output voltage of this supply(调节输出电压). The basic idea to make use of(利用) Peltier elements is that they do have a low impedance(低阻抗) and it is presumed that they will have little noise contribution(假设他们低噪声). Higher frequency components(高频分量) will be filtered out(滤掉) by the large time constant(大时间常数) of the temperature gradient(温度梯度).

笑笑我笑了 发表于 2014-2-19 23:03:55

去买个12V5A的开关电源即可。

alias 发表于 2014-2-19 23:06:49

楼主会错意了。

使用帕耳帖元件,是希望利用它们本身的低阻抗,从而减低噪声的产生。不是要求你使用低噪声的电源去驱动帕耳帖元件。

gzhuli 发表于 2014-2-20 01:29:16

这是要用温差发电来实现超低噪声的电源……
两片帕耳帖器件通过导热片连在一起,一片通电产生温差,另一片温差发电输出,利用温度变化的大时间常数和帕耳帖器件的低内阻来实现超低噪声的电源。
然后就是控制温差实现稳压了呗。

ggddll 发表于 2014-2-20 07:17:10

膜拜大神      

guoke1930 发表于 2014-2-22 15:31:03

gzhuli 发表于 2014-2-20 01:29
这是要用温差发电来实现超低噪声的电源……
两片帕耳帖器件通过导热片连在一起,一片通电产生温差,另一片 ...

膜拜大神版主,请教有没有什么实现方案?求赐一个。
页: [1]
查看完整版本: 低噪声12V电源设计,半导体制冷片