JPS5664662A - Band frequency detection circuit - Google Patents
Band frequency detection circuitInfo
- Publication number
- JPS5664662A JPS5664662A JP14095979A JP14095979A JPS5664662A JP S5664662 A JPS5664662 A JP S5664662A JP 14095979 A JP14095979 A JP 14095979A JP 14095979 A JP14095979 A JP 14095979A JP S5664662 A JPS5664662 A JP S5664662A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- minimum
- frequency setting
- detection circuit
- 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
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To simplify structure and as well as to reduce consumption electric power by a method wherein the output of a minimum frequency setting circuit and the output of a maximum frequency setting circuit are processed through a logical circuit.
CONSTITUTION: A minimum frequency setting circuit 7 defines a minimum frequency through a charging system composed of resistors and capacitors at a rise time of an input signal, the wave form of which is shaped. A maximum frequency setting circuit 8 defines a maximum frequency through a discharging system composed of resistors and capacitors at the fall time of an output signal of this minimum frequency setting circuit 7. The miximum threshold value voltage of an output of the maximum frequency setting circuit 8 is detected through a maximum voltage detection circuit 9 and the minimum threshold value voltage is detected through a minimum voltage detection circuit 10. The logical sum of the output of the maximum voltage detection circuit 9 and the output of the minimum voltage detection circuit is obtained from a logical circuit 12, and this output is entered in a control output circuit 12, thus, making an on/off signal output.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14095979A JPS5664662A (en) | 1979-10-30 | 1979-10-30 | Band frequency detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14095979A JPS5664662A (en) | 1979-10-30 | 1979-10-30 | Band frequency detection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5664662A true JPS5664662A (en) | 1981-06-01 |
Family
ID=15280788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14095979A Pending JPS5664662A (en) | 1979-10-30 | 1979-10-30 | Band frequency detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5664662A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794301A (en) * | 1986-08-19 | 1988-12-27 | Kabushiki Kaisha Toshiba | Fluorescent lamp having a convoluted discharge passage and fluorescent lamp apparatus incorporating the same |
-
1979
- 1979-10-30 JP JP14095979A patent/JPS5664662A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794301A (en) * | 1986-08-19 | 1988-12-27 | Kabushiki Kaisha Toshiba | Fluorescent lamp having a convoluted discharge passage and fluorescent lamp apparatus incorporating the same |
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