JPH01135810U - - Google Patents
Info
- Publication number
- JPH01135810U JPH01135810U JP3141888U JP3141888U JPH01135810U JP H01135810 U JPH01135810 U JP H01135810U JP 3141888 U JP3141888 U JP 3141888U JP 3141888 U JP3141888 U JP 3141888U JP H01135810 U JPH01135810 U JP H01135810U
- Authority
- JP
- Japan
- Prior art keywords
- preamplifier circuit
- circuit
- post
- power
- preamplifier
- 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
- 230000002265 prevention Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案に係る前置増幅回路の信号漏れ
防止装置の回路構成図、第２図は従来の前置増幅
回路の信号漏れ防止装置の回路構成図である。
１……信号源、２……前置増幅回路、３……後
段増幅回路、Ｓ１……＋電源スイツチ、Ｄ１……
ダイオード、Ｒ１……ベースバイアス抵抗。
FIG. 1 is a circuit diagram of a signal leakage prevention device for a preamplifier circuit according to the present invention, and FIG. 2 is a circuit diagram of a conventional signal leakage prevention device for a preamplifier circuit. 1...Signal source, 2...Preamplifier circuit, 3...Late stage amplifier circuit, S1 ...+power switch, D1 ...
Diode, R1 ...Base bias resistance.
Claims (1)
バイアス方式の前置増幅回路と、後段増幅回路と
、前記前置増幅回路と前記後段増幅回路との間に
介挿された電源の供給を制御する電源スイツチと
で構成され、前記電源スイツチに連動する電子ス
イツチが前記前置増幅回路のベースバイアス抵抗
に直列に接続されたことを特徴とする前置増幅回
路の信号漏れ防止装置。 a signal source, a self-biased preamplifier circuit using an NPN transistor, a post-amplifier circuit, and a power supply that controls the supply of power inserted between the preamplifier circuit and the post-amplifier circuit. 1. A signal leakage prevention device for a preamplifier circuit, characterized in that an electronic switch interlocked with the power switch is connected in series to a base bias resistor of the preamplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3141888U JPH01135810U (en) | 1988-03-09 | 1988-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3141888U JPH01135810U (en) | 1988-03-09 | 1988-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01135810U true JPH01135810U (en) | 1989-09-18 |
Family
ID=31257266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3141888U Pending JPH01135810U (en) | 1988-03-09 | 1988-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01135810U (en) |
-
1988
- 1988-03-09 JP JP3141888U patent/JPH01135810U/ja active Pending
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