GB846047A - Improvements in or relating to bistable electronic circuits - Google Patents
Improvements in or relating to bistable electronic circuitsInfo
- Publication number
- GB846047A GB846047A GB1071458A GB1071458A GB846047A GB 846047 A GB846047 A GB 846047A GB 1071458 A GB1071458 A GB 1071458A GB 1071458 A GB1071458 A GB 1071458A GB 846047 A GB846047 A GB 846047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- pulse
- resistor
- base
- tube
- 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
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/18—Modifications for indicating state of switch
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
- H03K23/002—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using semiconductor devices
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
846,047. Transistor multistable state circuits. RACAL ENGINEERING Ltd. April 1, 1959 [April 3, 1958], No. 10714/58. Class 40(6). A bistable circuit comprises a transistor and a gas discharge tube which is connected in series with a resistor the junction between which is connected to the output of the transistor so that when a pulse is applied to the transistor the gas tube conducts and the voltage across the resistor is applied to bias the transistor so that the tube remains conducting until a pulse of opposite polarity is applied to the input of the transistor. The Figure shows a bistable circuit in which when a negative pulse is applied to the base of transistor Trl the transistor bottoms and the resulting positive pulse at its collector causes neon tube N1 to fire the current flow through resistor R1 being applied back to the base of the transistor so that the transistor remains bottomed. This condition exists until a positive pulse is applied to the base of the transistor when the transistor is cut off and the neon tube Nl is extinguished. The resistor R12 may be replaced by a delay network. A ring counter circuit using a chain of such bistable circuits has pulses to be counted applied from a common input source to the base of each transistor which is also connected via a capacitor to the neon tube in the preceding stage so that with each input pulse the ON state is progressed round the counter chain Fig. 2 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1071458A GB846047A (en) | 1958-04-03 | 1958-04-03 | Improvements in or relating to bistable electronic circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1071458A GB846047A (en) | 1958-04-03 | 1958-04-03 | Improvements in or relating to bistable electronic circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB846047A true GB846047A (en) | 1960-08-24 |
Family
ID=9972925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1071458A Expired GB846047A (en) | 1958-04-03 | 1958-04-03 | Improvements in or relating to bistable electronic circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB846047A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2379035A1 (en) * | 2010-05-11 | 2012-04-20 | Sofamel, S.A. | Voltage detector. (Machine-translation by Google Translate, not legally binding) |
-
1958
- 1958-04-03 GB GB1071458A patent/GB846047A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2379035A1 (en) * | 2010-05-11 | 2012-04-20 | Sofamel, S.A. | Voltage detector. (Machine-translation by Google Translate, not legally binding) |
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