GB952610A - Electrical circuits employing negative resistance diodes - Google Patents
Electrical circuits employing negative resistance diodesInfo
- Publication number
- GB952610A GB952610A GB18305/60A GB1830560A GB952610A GB 952610 A GB952610 A GB 952610A GB 18305/60 A GB18305/60 A GB 18305/60A GB 1830560 A GB1830560 A GB 1830560A GB 952610 A GB952610 A GB 952610A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diode
- inputs
- diodes
- voltage state
- resistor
- 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
- 239000004065 semiconductor Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
- G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
- G06F7/50—Adding; Subtracting
- G06F7/501—Half or full adders, i.e. basic adder cells for one denomination
- G06F7/5013—Half or full adders, i.e. basic adder cells for one denomination using algebraic addition of the input signals, e.g. Kirchhoff adders
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
- H03K19/10—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using tunnel diodes
-
- 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
- H03K3/313—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices with two electrodes, one or two potential barriers, and exhibiting a negative resistance characteristic
- H03K3/315—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices with two electrodes, one or two potential barriers, and exhibiting a negative resistance characteristic the devices being tunnel diodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F2207/38—Indexing scheme relating to groups G06F7/38 - G06F7/575
- G06F2207/48—Indexing scheme relating to groups G06F7/48 - G06F7/575
- G06F2207/4802—Special implementations
- G06F2207/4828—Negative resistance devices, e.g. tunnel diodes, gunn effect devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Physics (AREA)
- General Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Algebra (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Logic Circuits (AREA)
Abstract
952,610. Semi-conductor diode logic circuits. RADIO CORPORATION OF AMERICA. May 24, 1960 [May 28, 1959], No. 18305/60. Heading H3T. [Also in Division G4] The characteristic of a tunnel diode is modified by introducing a resistor in series with it. A full adder, Fig. 7, comprises two series connected tunnel diodes 30, 36 in parallel with a path containing a third tunnel diode 42 in series with a resistor 48, the resistance of which is equal to the negative resistance of the diode. A circuit is energized from a pulse type constant current source 50. The three inputs representing two binary signals to be added and any carry signal, are fed to the circuit via resistors 54, 56, 58 and the sum output is obtained from tunnel 45. The binary signals are arranged to coincide with the energizing pulses, the amplitude of which are adjusted such that with no input signals all three diodes are in their low voltage state, one input switches one diode to its high voltage state, two inputs switch two diodes to their high voltage state and three inputs switch all three to the high voltage state. These conditions correspond to the point 106, 108, 110, 112 in Fig. 8, the curve 100 being that of the diode 42 in series with resistor 48 and curve 102 being that of the two diodes 30, 36 considered as a load for the other part. The output voltage across resistor 48 is therefore alternatively high and low as required for the sum output of the full adder. The carry signal output is obtained from a further tunnel diode 80 also energized from a pulse source 96, the three inputs being arranged such that the presence of two or three inputs will switch the diode to its high voltage state to provide the necessary carry signal. If two or more such adder circuits are to be cascaded, the pulsed energizing supply may be used to ensure that the signals are transferred in the right direction by sequentially energizing the circuits. Specification 939,959 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US816479A US3019981A (en) | 1959-05-28 | 1959-05-28 | Binary adder employing negative resistance elements |
Publications (1)
Publication Number | Publication Date |
---|---|
GB952610A true GB952610A (en) | 1964-03-18 |
Family
ID=25220731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18305/60A Expired GB952610A (en) | 1959-05-28 | 1960-05-24 | Electrical circuits employing negative resistance diodes |
Country Status (5)
Country | Link |
---|---|
US (1) | US3019981A (en) |
DE (1) | DE1114342B (en) |
GB (1) | GB952610A (en) |
NL (1) | NL252051A (en) |
SE (1) | SE300718B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3230385A (en) * | 1959-11-27 | 1966-01-18 | Rca Corp | Unidirectional signal propagation circuit including negative resistance elements |
US3092734A (en) * | 1959-12-18 | 1963-06-04 | Rca Corp | Amplitude limiter for a. c. signals using a tunnel diode |
US3194974A (en) * | 1961-03-28 | 1965-07-13 | Ibm | High speed logic circuits |
US3171974A (en) * | 1961-03-31 | 1965-03-02 | Ibm | Tunnel diode latching circuit |
US3230387A (en) * | 1961-04-17 | 1966-01-18 | Ibm | Switching circuits employing esaki diodes |
US3275813A (en) * | 1962-10-22 | 1966-09-27 | Westinghouse Electric Corp | Full binary adder using one tunnel diode |
US3280316A (en) * | 1963-04-29 | 1966-10-18 | Westinghouse Electric Corp | High-speed tunnel diode adder |
US3260862A (en) * | 1964-03-09 | 1966-07-12 | Rca Corp | Tunnel diode circuit |
US3246256A (en) * | 1964-06-08 | 1966-04-12 | Rca Corp | Oscillator circuit with series connected negative resistance elements for enhanced power output |
US3440413A (en) * | 1965-11-17 | 1969-04-22 | Ibm | Majority logic binary adder |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1179248A (en) * | 1955-12-28 | 1959-05-21 | Ibm | Full binary addition device |
-
0
- NL NL252051D patent/NL252051A/xx unknown
-
1959
- 1959-05-28 US US816479A patent/US3019981A/en not_active Expired - Lifetime
-
1960
- 1960-05-17 DE DER27979A patent/DE1114342B/en active Pending
- 1960-05-24 GB GB18305/60A patent/GB952610A/en not_active Expired
- 1960-05-27 SE SE5265/60A patent/SE300718B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
SE300718B (en) | 1968-05-06 |
US3019981A (en) | 1962-02-06 |
NL252051A (en) | |
DE1114342B (en) | 1961-09-28 |
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