如果我在Triac的A1端子上连接风扇电机会有什么后果？

嗨纳兹穆尔，
将负载连接到A1没有特别的功能问题，除了电路对EFT的抗扰度可能会大大降低，导致线路干扰情况下的杂散触发（最好将A1连接到线路的稳定电位）。
请注意，右侧的原理图是错误的，因为R13 / R12和Triac门并联负载（无法工作）。驱动电路必须直接参考A1（而不是通过负载的A1）。
如果您有任何其他问题，请与我们联系
最好的祝福
伯努瓦



以下为原文




Hi Nazmul,
There is no particular functionnal issue to connect the load to A1 except your circuit immunity to EFT could be highly reduced, resulting of spurious triggering in case of Line disturbances (it is better to connected A1 to a stable potential as Line).
Note that your schematic on the right is wrong as R13/R12 and Triac gate are connected in parrallel of the load (no way to work). The driving circuit must be referenced directly to A1 (and not to A1 through the load).
Let me know if you have any other question
Best Regards
Benoit

嗨Benoit，
请注意，右侧的原理图是错误的，因为R13 / R12和Triac门并联负载（无法工作）。驱动电路必须直接参考A1（而不是通过负载的A1）。
是的，我没有通过我的眼睛看到它。感谢您的仔细观察。
我想控制我的两个房间灯，那些共用中性线。通过机械开关和负载的其他端子从开关板向负载供电，连接到负载附近的中性线。我看不到连接负载A2终端的方法，可以吗？如果不是，如果我将负载连接到A1端子，如何提高抗扰度？缓冲器或MOV有帮助吗？
Vous remercier，
纳兹穆尔



以下为原文




Hi Benoit,
Note that your schematic on the right is wrong as R13/R12 and Triac gate are connected in parallel of the load (no way to work). The driving circuit must be referenced directly to A1 (and not to A1 through the load).
Yeah, I didn't see it through my eyes. Thanks to your careful observation.
I want to control two of my room lights, those share common neutral line. Power feed to the load from switch board via a mechanical switch and other terminal of the load connect to the neutral line nearby the load. I can't see a way to connect load A2 terminal, can you? If not, how can I improve immunity if I connect load to A1 terminal? Does a Snubber or MOV help?
Vous remercier,
Nazmul

嗨Benoit，
+更新：我试图将负载连接到Triac的A1终端。正如您已经建议的那样，电阻R12 / R13和三端双向可控硅开关并联。因此，我将使用三端双向可控硅开关驱动器MOC3021，以便在Q-I和Q-III中发射三端双向可控硅开关。它工作正常，但我发现了“嘶嘶”的噪音。可能是电源电路的感应（附图）。对此有何建议？
无论如何，我在等你对''的评论''
我想控制我的两个房间灯，那些共用中性线。通过机械开关和负载的其他端子从开关板向负载供电，连接到负载附近的中性线。我看不到连接负载A2终端的方法，可以吗？如果不是，如果我将负载连接到A1端子，如何提高抗扰度？缓冲器或MOV有帮助吗？
''谢谢！
- /纳兹穆尔



以下为原文




Hi Benoit,
+ Update: I tried to connect the load to Triac's A1 terminal. As you already suggested resistor  R12/R13 and Triac gate are in parallel. So, I'd to use a Triac driver, MOC3021 in order to fire the Triac in Q-I and Q-III. It's working fine but I found a ''hissing'' noise. Probably it's from the induction of power supply circuit (attached image). Any suggestion regarding this?
Anyway, I'm waiting for your comment on ''
I want to control two of my room lights, those share common neutral line. Power feed to the load from switch board via a mechanical switch and other terminal of the load connect to the neutral line nearby the load. I can't see a way to connect load A2 terminal, can you? If not, how can I improve immunity if I connect load to A1 terminal? Does a Snubber or MOV help?
'' Merci!
-/Nazmul

Bonjour Nazmul，
关于电感器噪声，由于您只将Triac控制器从直接控制更改为opto-Triac，因此SMPS电流变化是为Triac触发提供的电流。然后我的建议是检查你应用的光电三端双向可控硅LED电流是否远高于第一个电路的栅极电流。
关于负载与Triac的参考，t
这里没有特别的功能问题将负载连接到A1，除了你的电路对EFT的抗扰度会降低。而你是对的，Triac的parralel中的缓冲器可以安排这个。 10 nF / 51欧姆应该补偿。
如果您需要更多，请告诉我
伯努瓦



以下为原文




Bonjour Nazmul,
Regarding inductor noise, as you have only change the Triac controller from direct control to opto-Triac, the SMPS current change is the current provided for Triac triggering. Then my suggestion is to check if the opto-Triac LED current you apply is much higher than the gate current of the 1st circuit.
Regarding the reference of the load versus Triac, t
here is no particular functionnal issue to connect the load to A1 except that your circuit immunity to EFT will be reduce. And you're right, a snubber in parralel of the Triac could be arrange this. A 10 nF / 51 Ohm should compensate.

Let me know if you need more

Benoit

Bonjour Benoit，
对不起，来晚了。
关于电感器噪声，由于您只将Triac控制器从直接控制更改为opto-Triac，因此SMPS电流变化是为Triac触发提供的电流。然后我的建议是检查你应用的光电三端双向可控硅LED电流是否远高于第一个电路的栅极电流。
是。你是对的。我改变了光电三端双向可控硅驱动器隔离侧的限流电阻值。现在它工作正常。请在使用光电三端双向可控硅驱动器触发三端双向可控硅开关时，是否应使用敏感逻辑电平三端双向可控硅开关（10mA栅极触发电流）或标准三端双向可控硅开关（25-35mA栅极触发电流）。
留言Merci
纳兹穆尔



以下为原文




Bonjour Benoit,
Sorry for being late.
Regarding inductor noise, as you have only change the Triac controller from direct control to opto-Triac, the SMPS current change is the current provided for Triac triggering. Then my suggestion is to check if the opto-Triac LED current you apply is much higher than the gate current of the 1st circuit.
Yes. you are right. I changed the value of current limiting resistor at isolation side of opto-Triac driver. Now it's working fine. Please let me know whether should I use sensitive logic-level triac (10mA gate trigger current) or standard triac ( 25-35mA gate trigger current) while firing the triac using a opto-triac driver.
Merci
Nazmul

嗨纳兹穆尔，
回复晚了，请原谅。
如果您不必通过EMC标准（特别是传导噪声），请使用35 mA三端双向可控硅开关以确保更好的动态行为：更好的dV / dt耐受性和更好的关断能力（dI / dt）c。
如果您有更多问题，请与我们联系
最好的祝福
伯努瓦



以下为原文




Hi Nazmul,
Sorry for my late reply.
If you dont have to pass EMC standard (especially versus conducted noise), please use a 35 mA Triac to ensure a better dynamic behavior: better dV/dt withstanding and better turn-off capability (dI/dt)c.
Let me know if you have more questions
Best Regards
Benoit