JPS5228207A - Indicator driving circuit - Google Patents
Indicator driving circuitInfo
- Publication number
- JPS5228207A JPS5228207A JP50103430A JP10343075A JPS5228207A JP S5228207 A JPS5228207 A JP S5228207A JP 50103430 A JP50103430 A JP 50103430A JP 10343075 A JP10343075 A JP 10343075A JP S5228207 A JPS5228207 A JP S5228207A
- Authority
- JP
- Japan
- Prior art keywords
- driving circuit
- indicator driving
- agc
- freeing
- damping
- 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
- 238000013016 damping Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/12—Electrically-operated arrangements for indicating correct tuning
- H03J3/14—Visual indication, e.g. magic eye
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50103430A JPS5228207A (en) | 1975-08-28 | 1975-08-28 | Indicator driving circuit |
US05/717,391 US4128810A (en) | 1975-08-28 | 1976-08-24 | Signal level indicator driving circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50103430A JPS5228207A (en) | 1975-08-28 | 1975-08-28 | Indicator driving circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5228207A true JPS5228207A (en) | 1977-03-03 |
Family
ID=14353809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50103430A Pending JPS5228207A (en) | 1975-08-28 | 1975-08-28 | Indicator driving circuit |
Country Status (2)
Country | Link |
---|---|
US (1) | US4128810A (ja) |
JP (1) | JPS5228207A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5640827U (ja) * | 1979-09-05 | 1981-04-15 | ||
JPS5642931U (ja) * | 1979-09-07 | 1981-04-18 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4335468A (en) * | 1978-07-28 | 1982-06-15 | Foster George B | Simultaneous transmission signal detection system |
US4186351A (en) * | 1978-11-01 | 1980-01-29 | Gte Sylvania Incorporated | Signal strength indicator circuit for a radio receiver employing AGC |
US4241448A (en) * | 1979-12-28 | 1980-12-23 | Motorola, Inc. | High sensitivity dual function meter circuit |
US4679245A (en) * | 1984-10-15 | 1987-07-07 | General Research Of Electronics, Inc. | Radio receiver |
WO1999044283A2 (en) * | 1998-02-26 | 1999-09-02 | Koninklijke Philips Electronics N.V. | A device for generating an ac amplitude-dependent indicator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS452405Y1 (ja) * | 1967-07-07 | 1970-01-31 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2223188A (en) * | 1938-02-01 | 1940-11-26 | Gen Electric | Signaling system |
US2228858A (en) * | 1938-05-30 | 1941-01-14 | Rca Corp | Sound intensity indicator and control |
US2259121A (en) * | 1939-09-20 | 1941-10-14 | Lemuel M Temple | Radio receiver circuit |
US2836713A (en) * | 1956-08-17 | 1958-05-27 | Rca Corp | Transistor radio receiver tuning indicator |
US3319004A (en) * | 1962-07-30 | 1967-05-09 | Rca Corp | Tuning indicator system for multiplex radio receivers |
US3365669A (en) * | 1962-12-22 | 1968-01-23 | Hitachi Ltd | Lamp tuning indicator for transistor radio |
US3525045A (en) * | 1967-07-12 | 1970-08-18 | Scott Inc H H | Apparatus for indicating tuning of frequency-modulated signal transmissions |
-
1975
- 1975-08-28 JP JP50103430A patent/JPS5228207A/ja active Pending
-
1976
- 1976-08-24 US US05/717,391 patent/US4128810A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS452405Y1 (ja) * | 1967-07-07 | 1970-01-31 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5640827U (ja) * | 1979-09-05 | 1981-04-15 | ||
JPS632177Y2 (ja) * | 1979-09-05 | 1988-01-20 | ||
JPS5642931U (ja) * | 1979-09-07 | 1981-04-18 |
Also Published As
Publication number | Publication date |
---|---|
US4128810A (en) | 1978-12-05 |
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