JPH0357619U - - Google Patents
Info
- Publication number
- JPH0357619U JPH0357619U JP1989118794U JP11879489U JPH0357619U JP H0357619 U JPH0357619 U JP H0357619U JP 1989118794 U JP1989118794 U JP 1989118794U JP 11879489 U JP11879489 U JP 11879489U JP H0357619 U JPH0357619 U JP H0357619U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- voltage
- predetermined
- resistance element
- fixed resistance
- 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
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
- Control Of Electric Motors In General (AREA)
Description
第１図はこの考案の１つの実施例に係る減衰器
の回路図、第２図は第１図中のトランジスタがオ
フ時の等価回路を示す説明図、第３図は第１図中
のマイクロコンピユータの動作を示すフローチヤ
ート、第４図は従来の減衰器の一例を示す回路図
、第５図は従来の他の減衰器の例を示す回路図で
ある。
主な符号の説明、１９……信号ライン、２０…
…固定抵抗器、２２……第１の減衰量決定用抵抗
器、２４……第２の減衰量決定用抵抗器、２６，
２８，３０，３２……固定抵抗器、３４……マイ
クロコンピユータ、３６……キー入力部。
FIG. 1 is a circuit diagram of an attenuator according to one embodiment of this invention, FIG. 2 is an explanatory diagram showing an equivalent circuit when the transistor in FIG. 1 is off, and FIG. FIG. 4 is a flowchart showing the operation of the computer, FIG. 4 is a circuit diagram showing an example of a conventional attenuator, and FIG. 5 is a circuit diagram showing an example of another conventional attenuator. Explanation of main symbols, 19...Signal line, 20...
... Fixed resistor, 22... First attenuation amount determining resistor, 24... Second attenuation amount determining resistor, 26,
28, 30, 32...fixed resistor, 34...microcomputer, 36...key input section.
Claims (1)
号源と接続された信号ラインと接地間、または、
信号ラインに設けた固定抵抗素子の出力側と接地
間に、直流カツトコンデンサを介して減衰用固定
抵抗素子及びスイツチ用トランジスタを直列に装
備し、 このトランジスタのベース側に、所定のオン・
オフ制御信号を加えてトランジスタをオン・オフ
させる制御端子を設けるとともに、 トランジスタの減衰用固定抵抗側に、抵抗素子
を介して所定の直流電圧を印加する直流電圧印加
手段を備えたこと、 を特徴とする減衰器。 (2) 直流印加手段は、トランジスタのオフ時の
み所定の直流電圧を印加すること、 を特徴とする請求項１記載の減衰器。[Claims for Utility Model Registration] (1) Between a signal line connected to a signal source whose output impedance has a resistance component and the ground, or
A fixed resistance element for attenuation and a switching transistor are connected in series between the output side of the fixed resistance element installed in the signal line and the ground via a DC cut capacitor, and a predetermined ON/OFF voltage is connected to the base side of this transistor.
A control terminal is provided to turn the transistor on and off by applying an off control signal, and a DC voltage applying means is provided to apply a predetermined DC voltage via a resistance element to the attenuation fixed resistance side of the transistor. attenuator. (2) The attenuator according to claim 1, wherein the DC applying means applies a predetermined DC voltage only when the transistor is off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989118794U JPH0723690Y2 (en) | 1989-10-12 | 1989-10-12 | Magnetic encoder signal processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989118794U JPH0723690Y2 (en) | 1989-10-12 | 1989-10-12 | Magnetic encoder signal processing circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0357619U true JPH0357619U (en) | 1991-06-04 |
| JPH0723690Y2 JPH0723690Y2 (en) | 1995-05-31 |
Family
ID=31666944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989118794U Expired - Lifetime JPH0723690Y2 (en) | 1989-10-12 | 1989-10-12 | Magnetic encoder signal processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723690Y2 (en) |
-
1989
- 1989-10-12 JP JP1989118794U patent/JPH0723690Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0723690Y2 (en) | 1995-05-31 |
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