JPS5550733A - Saw tooth wave generation circuit - Google Patents
Saw tooth wave generation circuitInfo
- Publication number
- JPS5550733A JPS5550733A JP12373378A JP12373378A JPS5550733A JP S5550733 A JPS5550733 A JP S5550733A JP 12373378 A JP12373378 A JP 12373378A JP 12373378 A JP12373378 A JP 12373378A JP S5550733 A JPS5550733 A JP S5550733A
- Authority
- JP
- Japan
- Prior art keywords
- current
- equal
- saw tooth
- capacitor
- slope time
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/94—Generating pulses having essentially a finite slope or stepped portions having trapezoidal shape
Landscapes
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE:To make wider the dynamic range, to make equal the leading and trailing slope time, and to reduce the variation in the slope time variation due to temperature, by providing the switching circuit for the constant current circuit flowing the discharge current of capacitor. CONSTITUTION:The input signal (a) is fed from the input terminal, and the constant current circuit flowing the discharge current of the capacitor C2 (consisting of transistors TrT13-T15) is switched with the switching TrT16. Since the constitution like this is taken, the collector currents I5, I7 and I8 of TrT13-T15 are almost equal, and the charging current I6 (collector current of TrT12) of the capacitor C2 is equal to the collector current I5 of TrT11 with the constant current circuit constitution of TrT10-T12, the discharge current of the capacitor C2 I9 is nearly equal to I6. Accordingly, the saw tooth wave (b) in which the leading slope time T'3 by current I6 is equal to the trailing slope time T'4 by current I9, can be obtained. Further, since the low level of the saw tooth output is lowered to the level of VCFsat voltage (nearly equal to zero) of TrT14, T15, the dynamic range (difference between the low and high level of saw tooth wave) can be taken broader.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12373378A JPS5550733A (en) | 1978-10-06 | 1978-10-06 | Saw tooth wave generation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12373378A JPS5550733A (en) | 1978-10-06 | 1978-10-06 | Saw tooth wave generation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5550733A true JPS5550733A (en) | 1980-04-12 |
Family
ID=14867990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12373378A Pending JPS5550733A (en) | 1978-10-06 | 1978-10-06 | Saw tooth wave generation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550733A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5977507U (en) * | 1982-11-18 | 1984-05-25 | 住友金属工業株式会社 | Roller dice device |
US4471326A (en) * | 1981-04-30 | 1984-09-11 | Rca Corporation | Current supplying circuit as for an oscillator |
JPS60158915A (en) * | 1984-01-27 | 1985-08-20 | Daihen Corp | Roll die device |
JPS6240078A (en) * | 1985-08-14 | 1987-02-21 | Matsushita Electric Works Ltd | Control circuit for speed of motor |
EP0330033A2 (en) * | 1988-02-26 | 1989-08-30 | STMicroelectronics S.r.l. | Current-controlled saw-tooth wave oscillator stage |
EP0390356A2 (en) * | 1989-03-29 | 1990-10-03 | Nokia Mobile Phones Ltd. | An analog pulse shaper |
JPH0438136U (en) * | 1990-07-30 | 1992-03-31 |
-
1978
- 1978-10-06 JP JP12373378A patent/JPS5550733A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4471326A (en) * | 1981-04-30 | 1984-09-11 | Rca Corporation | Current supplying circuit as for an oscillator |
JPS5977507U (en) * | 1982-11-18 | 1984-05-25 | 住友金属工業株式会社 | Roller dice device |
JPS646965Y2 (en) * | 1982-11-18 | 1989-02-23 | ||
JPS60158915A (en) * | 1984-01-27 | 1985-08-20 | Daihen Corp | Roll die device |
JPS6240078A (en) * | 1985-08-14 | 1987-02-21 | Matsushita Electric Works Ltd | Control circuit for speed of motor |
EP0330033A2 (en) * | 1988-02-26 | 1989-08-30 | STMicroelectronics S.r.l. | Current-controlled saw-tooth wave oscillator stage |
EP0390356A2 (en) * | 1989-03-29 | 1990-10-03 | Nokia Mobile Phones Ltd. | An analog pulse shaper |
JPH0438136U (en) * | 1990-07-30 | 1992-03-31 |
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