GB984678A - Improvements in or relating to oscillators - Google Patents
Improvements in or relating to oscillatorsInfo
- Publication number
- GB984678A GB984678A GB968961A GB968961A GB984678A GB 984678 A GB984678 A GB 984678A GB 968961 A GB968961 A GB 968961A GB 968961 A GB968961 A GB 968961A GB 984678 A GB984678 A GB 984678A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- potential
- emitter
- march
- collector
- 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.)
- Expired
Links
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
- H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
- H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
- H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
- H03K3/282—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable
- H03K3/283—Stabilisation of output, e.g. using crystal
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
984,678. Transistor oscillators. GENERAL PRECISION Inc. March 16, 1961 [March 18, 1960], No. 9689/61. Heading H3T. A squarewave oscillator comprises two reciprocally coupled transistors T1, T2, one of the cross-coupling paths including a crystal 12; a potential divider, connected across a reference potential, comprising resistors 17, 11, 18, the tapping points on the potential divider being connected to the collector of transistor T2 and the emitter of collector T1 respectively; and a further resistor 20, which may be by-passed by capacitor 21, connected between the emitter of transistor T2 and the pole of the reference potential to which resistor 18 is connected. As described, a second potential divider 14, 15 has its tapping point connected to the base of transistor T1 and a sinewave output may be obtained from 28 by adding a parallel tuned circuit 25, 26.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1591460A | 1960-03-18 | 1960-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB984678A true GB984678A (en) | 1965-03-03 |
Family
ID=21774307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB968961A Expired GB984678A (en) | 1960-03-18 | 1961-03-16 | Improvements in or relating to oscillators |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH391015A (en) |
| GB (1) | GB984678A (en) |
| NL (1) | NL262446A (en) |
-
0
- NL NL262446D patent/NL262446A/xx unknown
-
1961
- 1961-03-16 GB GB968961A patent/GB984678A/en not_active Expired
- 1961-03-16 CH CH316661A patent/CH391015A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL262446A (en) | |
| CH391015A (en) | 1965-04-30 |
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