JPS56122228A - Quadrupler - Google Patents
QuadruplerInfo
- Publication number
- JPS56122228A JPS56122228A JP2496580A JP2496580A JPS56122228A JP S56122228 A JPS56122228 A JP S56122228A JP 2496580 A JP2496580 A JP 2496580A JP 2496580 A JP2496580 A JP 2496580A JP S56122228 A JPS56122228 A JP S56122228A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pulse
- circuit
- input
- comparator
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE:To ensure a detection for the variation of the input frequency with every 1/4 cycle, by delivering the pulse signal after detecting both the maximum and minimum values of the absolute value signal of the analog signal input. CONSTITUTION:The sine wave input signal ea is converted into the absolute value signal ¦ea¦ and then supplied to the comparators 21 and 31 of the positive and negative peak detecting circuits 2 and 3 each. When the input signal ea reaches the maximum values of 1/2pi and 3/2pi each, the output ed of the comparator 21 is reduced down to the level of -1 and inverted by the inverse amplifier 22 to be put into the one-shot circuit 5 via the clipper circuit 4. Thus the pulse Pa of a certain width is delivered. When the signal ea reaches the minimum values of pi and 2pi each, the output of the comparator 31 rises up to the level of +1 and is then put into the one-shot circuit 8 via the clipper circuit 7 to deliver the pulse Pb. These pulses Pa and Pb are then delivered sequentially through the OR circuit OR and in the form of the pulse P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2496580A JPS56122228A (en) | 1980-02-29 | 1980-02-29 | Quadrupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2496580A JPS56122228A (en) | 1980-02-29 | 1980-02-29 | Quadrupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56122228A true JPS56122228A (en) | 1981-09-25 |
Family
ID=12152679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2496580A Pending JPS56122228A (en) | 1980-02-29 | 1980-02-29 | Quadrupler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56122228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61280577A (en) * | 1985-06-05 | 1986-12-11 | Fuji Electric Co Ltd | Digital type frequency detecting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51146157A (en) * | 1975-06-11 | 1976-12-15 | Hitachi Ltd | Frequency step-multiplication circuit |
-
1980
- 1980-02-29 JP JP2496580A patent/JPS56122228A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51146157A (en) * | 1975-06-11 | 1976-12-15 | Hitachi Ltd | Frequency step-multiplication circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61280577A (en) * | 1985-06-05 | 1986-12-11 | Fuji Electric Co Ltd | Digital type frequency detecting method |
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