CN2295266Y - 充退磁器 - Google Patents

充退磁器 Download PDF

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Publication number
CN2295266Y
CN2295266Y CN 95215695 CN95215695U CN2295266Y CN 2295266 Y CN2295266 Y CN 2295266Y CN 95215695 CN95215695 CN 95215695 CN 95215695 U CN95215695 U CN 95215695U CN 2295266 Y CN2295266 Y CN 2295266Y
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China
Prior art keywords
magnetizing
coil
demagnetizing
demagnetization
circuit
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Expired - Fee Related
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CN 95215695
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English (en)
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贺发亮
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Individual
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Individual
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Abstract

本实用新型公开了一种学生做物理实验用的充退磁器,由充退磁电路、延时电路和声光报警电路构成,L是充、退磁线圈K1′为充磁开关通过半波整流器D控制线圈L的电流进而控制线圈L产生的磁场;K2′为退磁开关,退磁电流R在线圈L中形成高变的越来越小的零磁场,R3和C2确定充、退磁时间。

Description

充退磁器
本实用新型涉及物理教学实验用充退磁器。
目前，使用的充退磁器自动化程度低，充退磁量和时间不能自动控制，使用不便，而且结构复杂。急待研制一种充退磁量和时间自动控制，体积小，重量轻、使用方便的充退磁器。
本实用新型的目的是通过设置充退磁量和时间自动控制线路，达到充退磁时间自动控制，并以声光报警显示出来。
本实用新型的目的是这样实现的，L是一个充退磁线圈，L分别和充退磁开关K1′、K2′相联，充退磁开关K1、K2又分别和A、B两点相联，延时电路由B、D、C、R1、R2、R3、C2、R4、D4、D5、4098构成，声光报警线路由D3、C3、J3、R5、D6、C4、HFC9301喇叭组成。
本实用新型由于采用以上技术路线，结构简单，充退磁时间自动控制，使用效果好。
下面结合附图详细说明本实用新型的实施例。
当需要充磁时，K0闭合，K1′打到充磁位置，220V、50H7交流电流经D半波整流后通过线圈L产生强磁场，开始充磁，充磁时间长短由R3和C2确定，K1打到充磁位置时，K1把A、B两点闭合，BG2开始给C2充电，当电压达到D5的触发电平时，D5导通，J1吸合，J1-1常开点闭合，J2因J1-1闭合而吸合，J2-1常开点闭合，电路断开，L中无电流通过，J1-1闭合，发光管D6及HFC9301工作，声光报警，充磁结束。
当需要退磁时，把充磁开关K1′断开，把K2′打到退磁位置上，并打开K0开关，退磁电流通过R在线圈L中形成高变的越来越小的零磁场，开始退磁，退磁时间由R3、C2确定，当退完磁后，可控硅D5导通，J1吸合，常开点J1-1闭合，J2吸合J2-1常开点闭合，D6和HFC9301声光报警，退磁结束。

Claims (1)

1、一种供学生做实验用的充退磁器，充退磁电路分别和延时电路、声光报警电路相连接，其特征在于L分别和充退磁开关K1′、K2′相联，充退磁开关K1、K2又分别和A、B两点相联，延时电路由B、D、C、R1、R2、R3、C2、R4、D4、D5、4098构成，声光报警线路由D3、C3、J3、R5、D6、C4、HFC9301喇叭组成。
CN 95215695 1995-07-12 1995-07-12 充退磁器 Expired - Fee Related CN2295266Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95215695 CN2295266Y (zh) 1995-07-12 1995-07-12 充退磁器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95215695 CN2295266Y (zh) 1995-07-12 1995-07-12 充退磁器

Publications (1)

Publication Number Publication Date
CN2295266Y true CN2295266Y (zh) 1998-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 95215695 Expired - Fee Related CN2295266Y (zh) 1995-07-12 1995-07-12 充退磁器

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CN (1) CN2295266Y (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105118606A (zh) * 2015-09-11 2015-12-02 浙江大学 用于在线消除电磁式电流互感器剩磁的退磁电路及方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105118606A (zh) * 2015-09-11 2015-12-02 浙江大学 用于在线消除电磁式电流互感器剩磁的退磁电路及方法

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