CN206524822U - 一种低压干簧管触发可控硅的开关电路 - Google Patents
一种低压干簧管触发可控硅的开关电路 Download PDFInfo
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- CN206524822U CN206524822U CN201720199769.XU CN201720199769U CN206524822U CN 206524822 U CN206524822 U CN 206524822U CN 201720199769 U CN201720199769 U CN 201720199769U CN 206524822 U CN206524822 U CN 206524822U
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 11
- 239000010703 silicon Substances 0.000 title claims abstract description 11
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Abstract
本实用新型公开了一种低压干簧管触发可控硅的开关电路，包括控制电路和保护电路，所述控制电路包括主电机、三端双向交流开关、第二电阻和干簧管；所述主电机的一端连三端双向交流开关的主电极，另一端与电源的一端相连；所述第二电阻的一端接三端双向交流开关的主电极并与电源的另一端相连，所述第二电阻的另一端接三端双向交流开关的触发极；所述干簧管的一端与三端双向交流开关的触发极相连；所述保护电路包括电容、第一电阻和稳压管组；所述电容、第一电阻和稳压管组串联，所第一电阻与稳压管组的连接处接干簧管的另一端，所述稳压管组的另一端接三端双向交流开关的主电极。其优点在于：提供了小电流和低电压的工作环境，降低了对干簧管耐压的要求，不仅使电路的成本降低，还大大提高了可靠性。
Description
一种低压干簧管触发可控娃的开关电路
技术领域
[0001]本实用新型属于可控硅开关电路技术领域，尤其是涉及一种低压干簧管触发可控 硅的开关电路。
背景技术
[0002]现有的千簧管电阻可控硅组成的开关电路，因其结构简单，成本低廉，回路无触 点，寿命长，低噪音等优点，被广泛应用于水栗、门锁、柜门灯，报警器等控制电路，该电路的 缺点在于干簧管被直接串接在高压回路中，虽然通过干簧管的电流较小，但电压较高，干簧 管易由于耐压不足而产生误触发，致使负载误动作，造成不必要的经济损失，因此有必要予 以改进。
发明内容
[0003] 本实用新型的目的是针对上述现有技术存在的不足，提供一种低压干簧管触发可 控硅的开关电路，它具有工作时保证了小电流和低电压的环境，降低了对干簧管耐压的要 求，不仅使电路的成本降低，还大大提高了可靠性的特点。
[0004] 为了实现上述目的，本实用新型所采用的技术方案是：一种低压干簧管触发可控 硅的开关电路，包括控制电路和保护电路，所述控制电路包括主电机、三端双向交流开关、 第二电阻和干簧管;所述主电机的一端连三端双向交流开关的主电极，所述主电机的另一 端与电源的一端相连;所述第二电阻的一端接三端双向交流开关的主电极并与电源的另一 端相连，所述第二电阻的另一端接三端双向交流开关的触发极，；所述干簧管的一端与三端 双向交流开关的触发极相连;所述保护电路包括电容、第一电阻和稳压管组;所述电容、第 一电阻和稳压管组串联，所第一电阻与稳压管组的连接处接干簧管的另一端，所述稳压管 组的另一端接三端双向交流开关的主电极。
[0005] 采用上述结构后，本实用新型和现有技术相比所具有的优点是：一种低压干簧管 触发可控硅的开关电路工作在小电流和低电压的环境中，降低了对干簧管耐压的要求，不 仅使电路的成本降低，还大大提高了可靠性。
附图说明
[0006] 图1是本实用新型的电路图。
具体实施方式
[0007] 以下所述仅为本实用新型的较佳实施例，并不因此而限定本实用新型的保护范 围，下面结合附图和实施例对本实用新型进一步说明。
[0008] 实施例，见图1所示：
[0009] 一种低压干簧管触发可控硅的开关电路，包括控制电路和保护电路，其中控制电 路包括主电机MG、三端双向交流开关Q、第二电阻R2和干簧管SW;其中主电机MG的一端连三 端双向交流开关Q的主电极T1，其中主电机MG的另一端与电源的一端相连;其中第二电阻R2 的一端接三端双向交流开关Q的主电极T2并与电源的另一端相连，其中第二电阻似的另一 端接二端双向交流开关Q的触发极G，；其中干簧管SW的一端与三端双向交流开关q的触发极 G相连;其中保护电路包括电容C1、第一电阻R1和稳压管组db;其中电容c、第一电阻ri和稳 压管组DB串联，其中第一电阻R1与稳压管组DB的连接处接干簧管训的另一端，其中稳压管 组DB的另一端接三端双向交流开关Q的主电极72。 、…
[0010]上述结构中电容与第一电阻R1串联构成了谐振电路，利用电容恒流特性及容抗降 f，经电阻限流，稳压管削波，控制触发电压在一定的范围内并与电网周期同步，使得干簧 管SW两端的工作电压与稳压管组DB两端输出的稳定电压保持一致，保证了干簧管管电 于低电压的工作环境。
Claims (1)
1. 一种低压干簧管触发可控硅的开关电路，包括控制电路和保护电路，所述控制电路 包括主电机(MG)、三端双向交流开关(Q)、第二电阻(R2)和干簧管(SW);所述主电机(MG)的 一端连三端双向交流开关(Q)的主电极(T1)，所述主电机(MG)的另一端与电源的一端相连； 所述第二电阻(R2)的一端接三端双向交流开关(Q)的主电极(T2)并与电源的另一端相连； 所述第二电阻(R2)的另一端接三端双向交流开关⑼的触发极⑹，所述干簧管(SW)的一端 与三端双向交流开关(Q)的触发极相连;其特征在于:所述保护电路包括电容(C1)、第一 电阻(R1)和稳压管组(DB);所述电容(C1)、第一电阻(R1)和稳压管组(DB)串联，所第一电阻 (R1)与稳压管组(DB)的连接处接干簧管(SW)的另一端，所述稳压管组(DB)的另一端接三端 双向交流开关(Q)的主电极(T2)。
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