JPH0340837U - - Google Patents
Info
- Publication number
- JPH0340837U JPH0340837U JP9924389U JP9924389U JPH0340837U JP H0340837 U JPH0340837 U JP H0340837U JP 9924389 U JP9924389 U JP 9924389U JP 9924389 U JP9924389 U JP 9924389U JP H0340837 U JPH0340837 U JP H0340837U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- motor coil
- current transformer
- common mode
- switching element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例の構成図、第２図〜
第４図は従来における電力増幅回路の構成例を示
した図である。
Ｑ１〜Ｑ６……トランジスタ、Ｄ……駆動回路
、Ｌ１〜Ｌ３……モータコイル、ＣＴ１……コモ
ンモード・カレント・トランス、Ｃ１〜Ｃ３……
１次側コイル、Ｃ４……２次側コイル、Ｅ……比
較回路。
Figure 1 is a configuration diagram of an embodiment of the present invention, Figures 2-
FIG. 4 is a diagram showing an example of the configuration of a conventional power amplifier circuit. Q1 to Q6 ...Transistor, D...Drive circuit, L1 to L3 ...Motor coil, CT1...Common mode current transformer, C1 to C3 ...
Primary coil, C 4 ...Secondary coil, E...Comparison circuit.
Claims (1)
源の出力を供給するスイツチング素子によりモー
タのコイルを駆動する電力増幅回路において、 １次側には、前記スイツチング素子の出力端と
モータのコイルの一端の間に接続されたコイルが
モータのコイルの相数だけ巻かれたコモンモード
・カレント・トランスと、 このコモンモード・カレント・トランスの２次
側コイルに誘起される電圧を所定の基準値と比較
し、比較結果に応じた信号を出力する比較回路と
、 この比較結果により前記２次側コイルに誘起さ
れた電圧が基準値を越えている場合は、前記スイ
ツチング素子をオフにする駆動回路、 を具備したことを特徴とする電力増幅回路。[Claims for Utility Model Registration] In a power amplifier circuit that drives a motor coil using a DC power supply and a switching element that supplies the output of the DC power supply through on/off operations, the output of the switching element is connected to the primary side. A common mode current transformer has a coil connected between one end of the motor coil and one end of the motor coil, and the voltage induced in the secondary coil of this common mode current transformer. a comparison circuit that compares the voltage with a predetermined reference value and outputs a signal according to the comparison result; A power amplifier circuit characterized by comprising: a drive circuit that turns off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9924389U JPH0340837U (en) | 1989-08-25 | 1989-08-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9924389U JPH0340837U (en) | 1989-08-25 | 1989-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0340837U true JPH0340837U (en) | 1991-04-19 |
Family
ID=31648300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9924389U Pending JPH0340837U (en) | 1989-08-25 | 1989-08-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0340837U (en) |
-
1989
- 1989-08-25 JP JP9924389U patent/JPH0340837U/ja active Pending