2024年4月9日发(作者：)

When you're cooking up a soft start circuit for a switch-mode

power supply, don't forget to crunch some numbers to figure

out how much power your startup resistor can handle. This little

guy is crucial for keeping your power supply stable and reliable

during the startup process. To find out how much heat this

resistor can take, just use the formula P = V^2/R, where P is the

power dissipation, V is the voltage across the resistor, and R is

the resistance of the resistor. This calculation is your ticket to

picking the right power rating for the resistor, so it doesn't start

sizzling like a hot potato and potentially fizzle out during that

soft start.

当你做一个软启动电路为开关模式供电时， 不要忘了压缩一些数字来

判断你的启动电阻器能处理多少功率。 这个小家伙对于在启动过程中

保持你的电源稳定可靠至关重要。 要找出这种阻力能承受多少热量，

只需使用公式P=V…2、R，其中P是电源消散，V是电压横跨阻力，

R是阻力的阻力。 这个计算法是你们为抵抗器选取正确的功率等级的

门票，所以它不会像热土豆一样开始震荡，在柔软的开始时可能会震

荡出来。

Understanding how much power is being dissipated in the

startup resistor is crucial, especially when ites to the wild world

of power supplies during startup. We use a nifty little thing

called a soft start circuit to gently nudge the output voltage of

the power supply into action. This not only helps to keep the

inrush current in check, but also prevents ourponents from

feeling too stressed out. As the output voltage slowly ramps up,

the voltage across the startup resistor gradually increases, kind

of like a rollercoaster climbing up a hill. By measuring the

maximum voltage across the resistor and knowing its resistance,

we can figure out just how much power is being dissipated

using some fancy formulas. This fun little calculation is super

important because it helps us pick out a resistor with the right

power rating, ensuring that our soft start circuit runs smoothly

and reliably. And who doesn't want their circuit to be running as

smooth as a cool breeze on a hot summer day?

了解启动电阻器中有多少电能正在消散，是关键所在，特别是当它进

入启动期间的电力供应的野生世界时。 我们用一个叫做软启动电路的

小东西 轻轻地把电源的输出电压 推向行动 这不仅有助于控制内流，

也防止我们的负责人感到压力太大。 随着输出电压缓慢攀升，横跨起

动电阻器的电压逐渐增加，有点像爬上山丘的滚石。 通过测量整个电

阻器的最大电压并了解其阻力，我们就可以知道使用一些奇特的公式，

有多少功率被消散。 这个有趣的小计算是极为重要的，因为它帮助我

们挑出一个电源等级正确的电阻器，确保我们的软启动电路运行顺利

可靠。 谁不希望他们的电路在炎热的夏天 畅通无阻？

In the end, figuring out how much heat the startup resistor can

handle in a switch-mode power supply's soft start circuit is

super important for making sure the power supply doesn't go

haywire when it's firing up. By using the simple formula P =

V^2/R and getting a good grasp of how the power supply

behaves during startup, we can figure out the right power rating

for the resistor to keep it from getting too hot and causing a

meltdown. This calculation is absolutely crucial for designing

and setting up the soft start circuit in a way that keeps the

switch-mode power supply running safely and smoothly. So,

let's make sure that resistor doesn't start feeling the heat,

alright?

找出启动电阻器在开关—模具供电的软启动电路中能处理多少热量，

对于确保供电在起火时不走电线，是极为重要的。 通过使用简单的公

式P= V…2、R 并很好地掌握电源在启动期间的表现， 我们可以找出

电阻器的正确电源评级， 防止它过热并造成崩溃。 这种计算对于设计

并设置软启动电路绝对关键，其方式可以使开关—模组电源安全顺利

运行。 让我们确保 抵抗器不会开始 感受到热，好吗？