GB1117033A - Improvements in electrical function generator - Google Patents
Improvements in electrical function generatorInfo
- Publication number
- GB1117033A GB1117033A GB1946366A GB1946366A GB1117033A GB 1117033 A GB1117033 A GB 1117033A GB 1946366 A GB1946366 A GB 1946366A GB 1946366 A GB1946366 A GB 1946366A GB 1117033 A GB1117033 A GB 1117033A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output
- input
- positive feedback
- negative
- feedback
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/25—Arrangements for performing computing operations, e.g. operational amplifiers for discontinuous functions, e.g. backlash, dead zone, limiting absolute value or peak value
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/26—Arbitrary function generators
- G06G7/28—Arbitrary function generators for synthesising functions by piecewise approximation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
1,117,033. Transistor circuits. GENERAL ELECTRIC CO. 3 May, 1966 [4 May, 1965], No. 19463/66. Heading H3T. A function generator giving linear amplification of input signals within a given range of amplitudes, and a constant output for signals outside the range is provided with negative feedback, and positive feedback, the latter only becoming operative when the input signal is outside the predetermined range. Input signals applied at e i , Fig. 1, are amplified in a push-pull amplifier 11, 12, 28, 30, the output from which is fed to a zero referencing circuit 54, 60, the various elements of which are so chosen that when there is no input at e i , there is no output at conductor 68. Negative feedback is applied over conductors 74, 79 to transistor 11 and positive feedback is applied over conductors 96, 101 to transistor 12 via a diode gate 80, 82 which only connects the positive feedback when a predetermined input signal is exceeded. In this condition, the amplifier saturates and the output remains constant at a level determined by clamp 102, 108. As the input increases in a positive sense a<SP>1</SP>, Fig. 3, the output increases linearly in a negative sense until the positive feedback becomes effective b<SP>1</SP> and the output changes rapidly to a constant value c<SP>1</SP>. If the input now decreases, the output remains at c<SP>1</SP> until the positive feedback is disconnected at d<SP>1</SP> whereupon linear amplification is restored a<SP>1</SP>. A similar sequence occurs for negative inputs e<SP>1</SP> . . . h<SP>1</SP>. The transition points b<SP>1</SP>, d<SP>1</SP>, f<SP>1</SP>, h<SP>1</SP> and the saturation outputs c<SP>1</SP>, g<SP>1</SP> may be individually adjusted to give various responses, Figs. 2, 4, 5 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45302265A | 1965-05-04 | 1965-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1117033A true GB1117033A (en) | 1968-06-12 |
Family
ID=23798910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1946366A Expired GB1117033A (en) | 1965-05-04 | 1966-05-03 | Improvements in electrical function generator |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE680440A (en) |
DE (1) | DE1524289A1 (en) |
GB (1) | GB1117033A (en) |
-
1966
- 1966-05-03 BE BE680440D patent/BE680440A/xx unknown
- 1966-05-03 GB GB1946366A patent/GB1117033A/en not_active Expired
- 1966-05-04 DE DE19661524289 patent/DE1524289A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
BE680440A (en) | 1966-10-17 |
DE1524289A1 (en) | 1970-07-09 |
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