GB728739A - Improvements in or relating to crystal diode trigger circuits employing feedback - Google Patents
Improvements in or relating to crystal diode trigger circuits employing feedbackInfo
- Publication number
- GB728739A GB728739A GB24432/51A GB2443251A GB728739A GB 728739 A GB728739 A GB 728739A GB 24432/51 A GB24432/51 A GB 24432/51A GB 2443251 A GB2443251 A GB 2443251A GB 728739 A GB728739 A GB 728739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- characteristic
- diode
- points
- valve
- 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
- 239000013078 crystal Substances 0.000 title abstract 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000004065 semiconductor 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
Landscapes
- X-Ray Techniques (AREA)
- Electron Tubes For Measurement (AREA)
- Dc-Dc Converters (AREA)
Abstract
728,739. Semi-conductor trigger circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 19,1951 [Dec. 27,1950], No. 24432/51. Class 40 (6). A trigger circuit having two stable states comprises a crystal diode having positive and negative resistance regions in its characteristic, an electron discharge device serially connected to the diode having a feedback circuit between its output electrode and its control grid, the amount of feedback being dependent on the diode characteristic and such as to compensate for drifts in this characteristic. Trigger pulses are applied to the discharge devices In Fig. 1, current is supplied from battery 10 through the crystal diode 14 and valve 15 in series. The bias of'the control grid is adjusted so that valve 15 conducts in both the high and low current conditions corresponding to the two stable states of the circuit. Fig. 2 shows the currentvoltage characteristic OB of the diode 14, and curve 25 represents the " load line " corresponding to the anode voltage/anode current characteristic of valve 25, assuming no feedback circuit is provided. Points of intersection 26 and 27 then represent the two stable operating conditions of the circuit. Switching from one state to the other is effected by trigger pulses to the control grid from pulse source 20. Since the diode characteristic may in fact drift to positions such as those shown by curves OC, OD, the feedback circuit is provided by coupling the anode and grid of valve 15 through resistance 17. This effectively shifts the " load line " 25 to the curve AE, points 30 and 31 now being the normal operating points of the circuit. Due to the effect of the feedback circuit, the changes in the circuit conditions produced by drifts in the diode characteristic to curves OC and OD are less at operating points 30 and 31 than they were at the points 26 and 27, and the arrangement is thus more stable. Specification 728,740 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202830A US2598631A (en) | 1950-12-27 | 1950-12-27 | Stabilized trigger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB728739A true GB728739A (en) | 1955-04-27 |
Family
ID=22751435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24432/51A Expired GB728739A (en) | 1950-12-27 | 1951-10-19 | Improvements in or relating to crystal diode trigger circuits employing feedback |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2598631A (en) |
| DE (1) | DE906112C (en) |
| FR (1) | FR1054235A (en) |
| GB (1) | GB728739A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2810072A (en) * | 1951-08-04 | 1957-10-15 | Joseph Greenspan | Multistable networks |
| BE529948A (en) * | 1953-06-30 | |||
| DE1087494B (en) * | 1958-04-08 | 1960-08-18 | Werk Fuer Fernmeldewesen Veb | Circuit arrangement for pulse amplification in pulse frequency remote measuring devices |
| US3012157A (en) * | 1959-03-25 | 1961-12-05 | American Radiator & Standard | Rate of change and incremental change alarm |
| EP2878923A1 (en) | 2013-11-27 | 2015-06-03 | Alcatel Lucent | Network-connected objects discovery in indoor environments |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2101525A (en) * | 1934-03-21 | 1937-12-07 | Telefunken Gmbh | Linear amplifier circuit |
| GB536089A (en) * | 1939-07-28 | 1941-05-02 | Alan Dower Blumlein | Improvements in or relating to thermionic valve amplifiers |
| US2512750A (en) * | 1947-07-07 | 1950-06-27 | John T Potter | Trigger circuit |
| NL147713B (en) * | 1948-07-23 | Laing & Son Ltd John | METHOD FOR PREPARING A PLASTIC MORTAR. |
-
1950
- 1950-12-27 US US202830A patent/US2598631A/en not_active Expired - Lifetime
-
1951
- 1951-10-19 GB GB24432/51A patent/GB728739A/en not_active Expired
- 1951-12-17 FR FR1054235D patent/FR1054235A/en not_active Expired
- 1951-12-19 DE DEI5318A patent/DE906112C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2598631A (en) | 1952-05-27 |
| FR1054235A (en) | 1954-02-09 |
| DE906112C (en) | 1954-03-11 |
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