JPH0436473U - - Google Patents
Info
- Publication number
- JPH0436473U JPH0436473U JP7748390U JP7748390U JPH0436473U JP H0436473 U JPH0436473 U JP H0436473U JP 7748390 U JP7748390 U JP 7748390U JP 7748390 U JP7748390 U JP 7748390U JP H0436473 U JPH0436473 U JP H0436473U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- voltage
- diode
- series
- variable resistor
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
第１図はこの考案に係るボリウムの回し切り検
出回路の実施例を示し、第１図ａは回路図、第１
図ｂはボリウムの摺動子の位置に対する各部の電
圧の変化を示す図である。第２図は従来の回路図
である。
主な符号の説明、１……可変抵抗器（ボリウム
）、１ｃ……摺動子、２……電源、３……第１の
抵抗器、４……第２の抵抗器、５……第３の抵抗
器、６……ダイオード、７……電圧比較器。
FIG. 1 shows an embodiment of the volume turning detection circuit according to this invention, FIG. 1a is a circuit diagram, and FIG.
FIG. b is a diagram showing changes in voltage at various parts with respect to the position of the slider of the volume. FIG. 2 is a conventional circuit diagram. Explanation of main symbols, 1...variable resistor (volume), 1c...slider, 2...power supply, 3...first resistor, 4...second resistor, 5...th 3 resistor, 6... diode, 7... voltage comparator.
Claims (1)
に接続すると共に、前記電源と、第２の抵抗器と
、第３の抵抗器とを直列に接続し、前記可変抵抗
器の摺動端子と、前記第２の抵抗器及び第３の抵
抗器の接続線路との間にダイオードを設け、前記
ダイオードのアノード電圧とカソード電圧とを電
圧比較器で比較し、前記電圧比較器の比較結果に
基づき前記可変抵抗器の回し切りを検出可能に構
成したことを特徴とするボリウムの回し切り検出
回路。 A variable resistor, a power source, and a first resistor are connected in series, and the power source, a second resistor, and a third resistor are connected in series, and the slider of the variable resistor is connected in series. A diode is provided between the dynamic terminal and the connection line of the second resistor and the third resistor, and the anode voltage and cathode voltage of the diode are compared by a voltage comparator, and the voltage comparator compares the anode voltage and the cathode voltage of the diode. A volume control detection circuit, characterized in that it is configured to be able to detect the control of the variable resistor based on the result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7748390U JP2521673Y2 (en) | 1990-07-23 | 1990-07-23 | Volume turning detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7748390U JP2521673Y2 (en) | 1990-07-23 | 1990-07-23 | Volume turning detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0436473U true JPH0436473U (en) | 1992-03-26 |
| JP2521673Y2 JP2521673Y2 (en) | 1996-12-25 |
Family
ID=31619915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7748390U Expired - Lifetime JP2521673Y2 (en) | 1990-07-23 | 1990-07-23 | Volume turning detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521673Y2 (en) |
-
1990
- 1990-07-23 JP JP7748390U patent/JP2521673Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2521673Y2 (en) | 1996-12-25 |