GB1085178A - Tunnel diode multistable circuit - Google Patents
Tunnel diode multistable circuitInfo
- Publication number
- GB1085178A GB1085178A GB4920665A GB4920665A GB1085178A GB 1085178 A GB1085178 A GB 1085178A GB 4920665 A GB4920665 A GB 4920665A GB 4920665 A GB4920665 A GB 4920665A GB 1085178 A GB1085178 A GB 1085178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- voltage
- circuit
- current
- tunnel
- 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
- 239000010409 thin film Substances 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
- H03K3/313—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
Landscapes
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Semiconductor Memories (AREA)
Abstract
1,085,178. Tristable tunnel diode circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 19, 1965 [Dec. 24, 1964], No. 49206/65. Heading H3T. A switching circuit for use as an amplifier of the first half of a bipolar pulse which is insensitive to the second half, has a current-voltage characteristic with three stable regions separated by two negative resistance regions, and is composed of three parallel current paths, two of which contain tunnel diodes oppositely poled with respect to one another and the third of which consists of a resistor. The two diodes are forwardly biased (Fig. 3, not shown). In a practical form (Fig. 5) the bias sources for the tunnel diodes are in the form of a voltage divider R1, R2 across a voltage source V s . The circuit is initially in its central stable state (A - , Fig. 4, not shown), and a positive current pulse at 11 will switch it to its positive highvoltage state (B), while a negative current pulse will switch it to its negative high-voltage state (C). Switching direct from (B) to (C) or vice versa needs a pulse of greater amplitude than the initial pulse and hence the circuit is insensitive to the second half of a normal bipolar pulse from a thin film magnetic store. Asymmetries in the diode characteristics can be corrected by changing the ratio of R1 and R2, which can be constructed as a potentiometer. The source V s can be a strobe pulse generator with a sharp initial peak to reset the circuit to point A on the characteristic at the end of the peak. The sum of R and the parallel connection of R1 + R2 (in ohms) should be between 4/3 and 4/5 times the ratio of the voltage (in millivolts) provided by the source and the tunnel-diode peak current (in milliamps),
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1667264A CH415746A (en) | 1964-12-24 | 1964-12-24 | Discriminator circuit for bipolar small signals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1085178A true GB1085178A (en) | 1967-09-27 |
Family
ID=4419255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4920665A Expired GB1085178A (en) | 1964-12-24 | 1965-11-19 | Tunnel diode multistable circuit |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH415746A (en) |
DE (1) | DE1288134B (en) |
FR (1) | FR1458857A (en) |
GB (1) | GB1085178A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008138617A1 (en) * | 2007-05-16 | 2008-11-20 | Universität Duisburg-Essen | Pulse generator for pulse generation and/or pulse modulation |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL257299A (en) * | 1959-10-29 | |||
NL265150A (en) * | 1960-05-26 | |||
NL269344A (en) * | 1960-09-19 |
-
1964
- 1964-12-24 CH CH1667264A patent/CH415746A/en unknown
-
1965
- 1965-11-19 GB GB4920665A patent/GB1085178A/en not_active Expired
- 1965-12-10 FR FR41668A patent/FR1458857A/en not_active Expired
- 1965-12-17 DE DE1965I0029621 patent/DE1288134B/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008138617A1 (en) * | 2007-05-16 | 2008-11-20 | Universität Duisburg-Essen | Pulse generator for pulse generation and/or pulse modulation |
Also Published As
Publication number | Publication date |
---|---|
CH415746A (en) | 1966-06-30 |
FR1458857A (en) | 1966-11-10 |
DE1288134B (en) | 1969-01-30 |
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