JPH0177018U - - Google Patents
Info
- Publication number
- JPH0177018U JPH0177018U JP1987171907U JP17190787U JPH0177018U JP H0177018 U JPH0177018 U JP H0177018U JP 1987171907 U JP1987171907 U JP 1987171907U JP 17190787 U JP17190787 U JP 17190787U JP H0177018 U JPH0177018 U JP H0177018U
- Authority
- JP
- Japan
- Prior art keywords
- power
- switching element
- semiconductor switching
- turned
- control means
- 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
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Amplifiers (AREA)
Description
第１図乃至第４図は本考案の一実施例を示し、
第１図はブロツク図、第２図は電源投入時のフロ
ーチヤート、第３図は電源投入時の半導体スイツ
チング素子のオンオフ状態を示すタイムチヤート
、第４図は増幅回路への印加電圧の変化を示す電
圧波形図、第５図は従来例における第４図相当図
である。
図面中、２は増幅回路、４はマイクロコンピユ
ーター（ゲート制御手段）、５は電池（電源）、
６は半導体スイツチング素子、７は電源スイツチ
である。
1 to 4 show an embodiment of the present invention,
Figure 1 is a block diagram, Figure 2 is a flowchart when the power is turned on, Figure 3 is a time chart showing the on/off state of the semiconductor switching element when the power is turned on, and Figure 4 is a diagram showing changes in the voltage applied to the amplifier circuit. The voltage waveform diagram shown in FIG. 5 is a diagram corresponding to FIG. 4 in the conventional example. In the drawing, 2 is an amplifier circuit, 4 is a microcomputer (gate control means), 5 is a battery (power source),
6 is a semiconductor switching element, and 7 is a power switch.
Claims (1)
信号の増幅回路に電力を供給するようにしたもの
であつて、電源投入時には前記半導体スイツチン
グ素子を、そのデユーテイー比が徐々に大になる
ように間欠的にオンさせて最終的にオン状態を維
持させるゲート制御手段を設けたことを特徴とす
る音声再生装置。 Power is supplied from a power source to an audio signal amplification circuit via a semiconductor switching element, and when the power is turned on, the semiconductor switching element is intermittently turned on so that its duty ratio gradually increases. 1. An audio reproducing device characterized in that it is provided with a gate control means for finally maintaining an on state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171907U JPH0177018U (en) | 1987-11-10 | 1987-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171907U JPH0177018U (en) | 1987-11-10 | 1987-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0177018U true JPH0177018U (en) | 1989-05-24 |
Family
ID=31463907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171907U Pending JPH0177018U (en) | 1987-11-10 | 1987-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0177018U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04121115U (en) * | 1991-04-15 | 1992-10-29 | 株式会社ケンウツド | Shock noise reduction circuit |
| JP2010171790A (en) * | 2009-01-23 | 2010-08-05 | Oki Semiconductor Co Ltd | Bias potential generation circuit |
-
1987
- 1987-11-10 JP JP1987171907U patent/JPH0177018U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04121115U (en) * | 1991-04-15 | 1992-10-29 | 株式会社ケンウツド | Shock noise reduction circuit |
| JP2010171790A (en) * | 2009-01-23 | 2010-08-05 | Oki Semiconductor Co Ltd | Bias potential generation circuit |
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