JPS58116315U - Amplifier protection device - Google Patents
Amplifier protection deviceInfo
- Publication number
- JPS58116315U JPS58116315U JP1346582U JP1346582U JPS58116315U JP S58116315 U JPS58116315 U JP S58116315U JP 1346582 U JP1346582 U JP 1346582U JP 1346582 U JP1346582 U JP 1346582U JP S58116315 U JPS58116315 U JP S58116315U
- Authority
- JP
- Japan
- Prior art keywords
- contact
- potential
- whose
- reference potential
- positive
- 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.)
- Granted
Links
Landscapes
- Amplifiers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案による増幅器の１実施例の保護装置の
ブロック図、第２図は同他の実施例の一部分のブロック
図である。
６・・−ＮＰＮ トランジスタ、８・・・ＰＮＰトラン
ジスタ、１０・・・復調器、１２・・・負荷、１４−′
・・第一１の切−換スイッチ、１６・・・第２の切換ス
イッチ、２４・・・第３の切換スイッチ、２６・・・検
出回路、２８・・・第２の比較器、３０・・・第１の比
較器。FIG. 1 is a block diagram of a protection device of one embodiment of an amplifier according to this invention, and FIG. 2 is a block diagram of a portion of another embodiment of the same. 6...-NPN transistor, 8... PNP transistor, 10... demodulator, 12... load, 14-'
... first changeover switch, 16 ... second changeover switch, 24 ... third changeover switch, 26 ... detection circuit, 28 ... second comparator, 30. ...First comparator.
Claims (1)
よびＮＰＮ ）ランジスクと、これら両トランジスタの
エミッタにそれぞれ抵抗器を介して一端を接続した負荷
と、上記ＮＰＮ トランジスタのコレクタにその接触子
を接続しその正電位接点を第１の正電位に接続しその基
準電位接点を基準電位点に接続した第１の切換スイッチ
と、上記ＰＮＰトランジ皮夕の゛コレクタにその接触子
を接続しその負電位接点を第１の負電位＆と接続しその
基準電位接点を基準電位点に接続した第２の切換スイツ
′チと、上記負荷の他端に接触子を接続しその基準電位
接点を基準電位点に接続しその正電位接点を第１の正電
位より値の小さい第２の正電位に接続しその負電位接点
を第１の負電位より値の大きい第２の負電位に接続した
第３の切換スイッチと、上記負荷の出力または上記両抵
抗器間の電圧の平均値を検出する回路と、この検出回路
の出力が予め定めた負の基準信号より小さいとき第１の
切換スイッチの接触子をその正電位接点からその基準゛
電位接点に切換りると共う第３の切換スイッチ ゛
の接触子をその基準電位接点からその負電位接点に切換
える第１の比較器と、上記検出回路の出力が予め定めた
正の基準信号より大きいとき第２の切換スイッチの接触
子をその負電位接点からその基準電位接点に切換えると
共に、第３の切換スイッチの接触子をその基準電位接点
からその正電位 −接点に切換える第２の比較器とか
らなる増幅器の保護装置。A pair of PNP and NPN transistors whose base electrodes are connected to a signal source, a load whose one end is connected to the emitters of both transistors via a resistor, and whose contacts are connected to the collector of the NPN transistor. a first changeover switch whose positive potential contact is connected to a first positive potential and whose reference potential contact is connected to a reference potential point; whose contact is connected to the collector of the PNP transistor skin and whose negative potential contact is connected to the collector of the PNP transistor; a second changeover switch which is connected to the first negative potential & and whose reference potential contact is connected to the reference potential point, and a contact is connected to the other end of the load and whose reference potential contact is connected to the reference potential point. a third switching device, in which the positive potential contact is connected to a second positive potential that is smaller in value than the first positive potential, and the negative potential contact is connected to a second negative potential that is larger in value than the first negative potential; a switch; a circuit for detecting the output of the load or the average value of the voltage between the resistors; and a circuit for detecting the output of the load or the average value of the voltage between the two resistors; a first comparator that switches the contact of the switch from the positive potential contact to its reference potential contact and a third changeover switch that switches the contact from its reference potential contact to its negative potential contact; When it is larger than a predetermined positive reference signal, the contact of the second changeover switch is switched from its negative potential contact to its reference potential contact, and the contact of the third changeover switch is switched from its reference potential contact to its positive potential - and a second comparator switching contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1346582U JPS58116315U (en) | 1982-02-01 | 1982-02-01 | Amplifier protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1346582U JPS58116315U (en) | 1982-02-01 | 1982-02-01 | Amplifier protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58116315U true JPS58116315U (en) | 1983-08-09 |
| JPS6348970Y2 JPS6348970Y2 (en) | 1988-12-16 |
Family
ID=30025981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1346582U Granted JPS58116315U (en) | 1982-02-01 | 1982-02-01 | Amplifier protection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58116315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010272904A (en) * | 2009-05-19 | 2010-12-02 | Yazaki Corp | Class-d amplifier failure detection apparatus |
-
1982
- 1982-02-01 JP JP1346582U patent/JPS58116315U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010272904A (en) * | 2009-05-19 | 2010-12-02 | Yazaki Corp | Class-d amplifier failure detection apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6348970Y2 (en) | 1988-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58116315U (en) | Amplifier protection device | |
| JPS62164700U (en) | ||
| JPS6040132U (en) | Phase switching circuit | |
| JPS5819321U (en) | load control device | |
| JPS6055128U (en) | analog switch circuit | |
| JPS5980950U (en) | Relay contact protection circuit | |
| JPS5839616U (en) | Inrush current suppression circuit | |
| JPS58144968U (en) | Video signal amplification circuit with mute function | |
| JPS5952735U (en) | matrix circuit | |
| JPS58116316U (en) | Amplifier protection device | |
| JPS59127367U (en) | clamp circuit | |
| JPS6286782U (en) | ||
| JPS588171U (en) | Inspection circuit for analog voltage signal switching contact | |
| JPS5981149U (en) | Stereo monaural switching circuit | |
| JPS60101831U (en) | Signal switching circuit | |
| JPS58196545U (en) | Power switching circuit | |
| JPS5859295U (en) | Control current reduction circuit for automatic speaker switching | |
| JPS62133418U (en) | ||
| JPS59129343U (en) | Overcurrent protection circuit | |
| JPS614214U (en) | On/off control device for series type constant voltage circuit | |
| JPS6040113U (en) | Differential amplifier power supply noise prevention circuit | |
| JPS6079895U (en) | speaker protection circuit | |
| JPS59114612U (en) | Signal muting circuit | |
| JPS5883837U (en) | semiconductor switch circuit | |
| JPS6039536U (en) | Sound switching device |