p***g
发帖数: 135 | 1 power board can supply 12V and control board need 12V. But 12V for control
board must be with different ground from the 12V from power board. How to do
it cheaply?
I am thinking of flyback but I need find a cheap SMD transformer.
Anyone has good idea |
E*****a
发帖数: 757 | 2 没有transformer怎么可能隔离？
do
【在 p***g 的大作中提到】
: power board can supply 12V and control board need 12V. But 12V for control
: board must be with different ground from the 12V from power board. How to do
: it cheaply?
: I am thinking of flyback but I need find a cheap SMD transformer.
: Anyone has good idea
|
i*****t
发帖数: 24265 | |
g******u
发帖数: 3060 | 4 你需要多少电流？这个是关键。
最简单的是绕个变压器，一端12V放中间，两侧mosfet 100kHZ形成方波，输出端整流滤
波即可。 |
i*****t
发帖数: 24265 | 5 control board电流小，加一个独立电源 |
