JPS5754421A - Oscillator - Google Patents
OscillatorInfo
- Publication number
- JPS5754421A JPS5754421A JP55129498A JP12949880A JPS5754421A JP S5754421 A JPS5754421 A JP S5754421A JP 55129498 A JP55129498 A JP 55129498A JP 12949880 A JP12949880 A JP 12949880A JP S5754421 A JPS5754421 A JP S5754421A
- Authority
- JP
- Japan
- Prior art keywords
- oscillator
- temperature
- clamp
- emitter
- voltage
- 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
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
- H03K3/0231—Astable circuits
Abstract
PURPOSE:To make a titled oscillator stable against temperature and to avoid error in oscillating period, by using the coupling circuit of an emitter follower of both PNP and NPN transistors (TRs) as a clamp for a hysteresis comparator oscillator. CONSTITUTION:Expressing resistance values of resistors 19, 20 as R19, R20, a clamp voltage VINOT of an inverting input terminal IIN of a comparator 29 is shown in Equation I, where VBE21, VBE23 are base-to-emitter voltages of NPN TR21 and PNP TR23. The 1st terms of Equation I is independently of temperature and the temperature characteristics of the VBE in the 2nd and 3rd terms are canceled with each other. Thus, the voltage VINOT is very stable against temperature and a clamp type oscillator having stable temperature characteristics can be achieved. When a switch 18 is closed, since the base of the TR21 is lifted up to the power supply voltage, the potential of the emitter of the TR21 is pulled up, the TR23 which is clamped turns off and oscillation is started. In this case, the time error in the 1st period is not caused entirely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55129498A JPS5754421A (en) | 1980-09-18 | 1980-09-18 | Oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55129498A JPS5754421A (en) | 1980-09-18 | 1980-09-18 | Oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5754421A true JPS5754421A (en) | 1982-03-31 |
Family
ID=15010963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55129498A Pending JPS5754421A (en) | 1980-09-18 | 1980-09-18 | Oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5754421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015525059A (en) * | 2012-08-13 | 2015-08-27 | ノースロップ グラマン システムズ コーポレイションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ | Power supply system and method |
-
1980
- 1980-09-18 JP JP55129498A patent/JPS5754421A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015525059A (en) * | 2012-08-13 | 2015-08-27 | ノースロップ グラマン システムズ コーポレイションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ | Power supply system and method |
| US9413220B2 (en) | 2012-08-13 | 2016-08-09 | Northrop Grumman Systems Corporation | Power supply systems and methods |
| US9653982B2 (en) | 2012-08-13 | 2017-05-16 | Northrop Grumman Systems Corporation | Power supply systems and methods |
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