In this post we discuss an effective and efficient high current compact LED Driver power supply using a dimmer switch gadget.
在我的一个其他帖子中，我讨论了一种高压变压器的电源电路，该电源电路用于控制电容输出的三次自由型，然而，由于该概念涉及到三端双向可控硅的电容输出缩短了设计遭受了重大损失，因此在课程中损失了大量效率。
电路概念
由于贵重的功率受到地面的珍贵功率，所涉及输出的分流的任何电源都会失去效率......这是实现电压控制的非常粗略的方法。
The correct procedure for achieving optimal performance is to do just the opposite, it is to cut off power to the output as soon as the output tends to go above the specified or the rated load voltage, rather than shunting the output V and I.
从电容电源获取最佳电流供应可能是困难的，因为只要随着电源的输出负载电压额定值与电源的输入电压相匹配，电容电源的电容电源也很困难，例如，电容电源工作只有在负载规范也额定在220V时，220V将有效地工作...否则电源的效率将开始下降并导致连接负载的剧烈电压和电流下降。
因此，当从220V电容电源操作的较低的DC负载时，电阻器被整合为直接或更便宜的滴功率，以热量的形式浪费了大量的能量，并且系统变得无法浪费为了使用最大效率，可以使用电路分流输出电压的电路，以实现电压调节。
使用调光器开关来控制AC
In the present design we make use of a dimmer switch for driving LED lights. As we know a dimmer switch employs a triac for controlling voltage but instead of shunting power the circuit chops the AC into sections such that the average voltage at the output becomes compatible to the desired load voltage.
Chopping the AC into wider or narrower sections as per the required load potential allows the capacitor to work at its full efficiency since the excess power from it is simply cut off instead of shunting or shorting to ground.
A nice example may be witnessed in the above diagram where a dimmer switch may be seen wired with a capacitive transformerless power supply circuit for operating a high current load such as a string of high watt LEDs.
Capacitor for Controlling Current
As may be seen the capacitor used is a 4uF high value capacitor which may be rated to provide as high as 350mA of current when operated in its max efficiency only as long as the load doesn't shunt or short the power.
The dimmer switch allows the entire high current to pass through the capacitor but restricts the voltage by chopping the AC phase into calculated segments.
上述功能确保了全350 mA，用于照亮LED，但防止电容器危险的高电压以防止负载损坏或过加热....该过程确保提出的完善有效的操作高电流变压器LED驱动电源电路。
调光开关？
it looks like the one which we use to control speed of ceiling fan in india..
两者都是相同的..？
that's right, not only in India but all across the world.
如何修改串联的.24W 96 LED（288-316V，80mA）。
remove the dimer switch and connect the mains directly to the input.
串联连接所有96个LED。
make sure to use a 1uF/400V instead of the 4uF cap
How many 8mm led to add for transformer less power supply and output is 5v using zener diode ,and how to add dimmer for this circuit
您可以在串联中添加高达90个LED。对于较低的值，您必须适当地调整调光器输出。不需要5V齐纳。
hi, i am a tv technician 30% of led tvs suffer from faulty led diriver circuit which changes 220dc to less voltage and current (depending on screen size .i.e number of leds)i just need a simple voltage controlled led driver circuit.
Hi Veli,
你可以尝试这个概念：
//www.addme-blog.com/wp-content/uploads/2019/05/100-watt-led-bulb-improved-design-1.png
我试图为两个不同电压的无变形的PSU，即9V / 1A和4.4V / 1.2A
有人可以帮助我出去没有变形金的那个高电流吗？
请参阅本文中的“MOSFET控制器电源”设计：
//www.addme-blog.com/cheap-yet-useful-transformerless-power/
I am looking for a circuit to power led tv backlights in a salvaged led tv chassis. The LCD tv screen will be replaced by a translucent white plastic panel that, when backlit by the LEDs, can be used for signage. I am interested in partnering with a designer/builder to manufacture such a power supply to power LED backlit signage in salvaged TV chassis ranging from 32″ to 65″. My customer is a large electronics recycler and could use hundreds of these power supplies. Anyone interested?
亲爱的先生,
我需要为索尼电视eht no.8-598-845-00。你能指导我获得一个吗？（在工作条件下新的或使用）
我试图瞪着但不成功。Ed M Fisher先生或任何尊敬的读者帮助吗？
Thank you very much in anticipation.
对不起imsa，我们不卖零件所以不知道其在市场上的可用性
如何构建此灯光调光器...