GB888176A - Improvements in or relating to electrical circuits employing transistors - Google Patents
Improvements in or relating to electrical circuits employing transistorsInfo
- Publication number
- GB888176A GB888176A GB2316058A GB2316058A GB888176A GB 888176 A GB888176 A GB 888176A GB 2316058 A GB2316058 A GB 2316058A GB 2316058 A GB2316058 A GB 2316058A GB 888176 A GB888176 A GB 888176A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistor
- supply
- clamping
- transistor
- relating
- 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
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
- H03K17/08146—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in bipolar transistor switches
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
888,176. Transistor switching circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. July 16, 1959 [July 18, 1958], No. 23160/58. Class 40(6). A transistor having its collector connected through a resistor to a source of supply B of sufficiently high voltage to damage the transistor when non-conducting and also connected to a safe clamping voltage S through a diode Dl has a resistor R3 connected between the clamping source and the opposite terminal of the supply so as to prevent the collector voltage from rising to an unsafe value if the clamping supply fails. The resistor may be of a non-linear type, e.g. a Zener diode (Fig. 2 not shown). A single resistor may serve for a number of circuits, for example, for the common clamping supply for a bi-stable circuit Tl, T2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2316058A GB888176A (en) | 1958-07-18 | 1958-07-18 | Improvements in or relating to electrical circuits employing transistors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2316058A GB888176A (en) | 1958-07-18 | 1958-07-18 | Improvements in or relating to electrical circuits employing transistors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB888176A true GB888176A (en) | 1962-01-24 |
Family
ID=10191132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2316058A Expired GB888176A (en) | 1958-07-18 | 1958-07-18 | Improvements in or relating to electrical circuits employing transistors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB888176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496941A (en) * | 1982-01-07 | 1985-01-29 | Restbury Limited | Switch protection device |
-
1958
- 1958-07-18 GB GB2316058A patent/GB888176A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496941A (en) * | 1982-01-07 | 1985-01-29 | Restbury Limited | Switch protection device |
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