GB1238204A - - Google Patents
Info
- Publication number
- GB1238204A GB1238204A GB1238204DA GB1238204A GB 1238204 A GB1238204 A GB 1238204A GB 1238204D A GB1238204D A GB 1238204DA GB 1238204 A GB1238204 A GB 1238204A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistor
- transistor
- base
- collector
- emitter
- 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
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/04—Modifications for accelerating switching
- H03K17/041—Modifications for accelerating switching without feedback from the output circuit to the control circuit
- H03K17/0412—Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the control circuit
- H03K17/0414—Anti-saturation measures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Bipolar Integrated Circuits (AREA)
- Electronic Switches (AREA)
- Bipolar Transistors (AREA)
Abstract
1,238,204. Transistor circuit. SOC. GENERALE SEMICONDUTTORI S.p.A. 25 Sept., 1968 [21 Dec., 1967], No. 45585/68. Heading H3T. Saturation of a switching transistor T 1 , Fig. 2, is controlled by a control transistor T 2 whose base is connected through a resistor R B to its collector and this is connected to the base of T 1 , whose emitter is connected through a resistor R E to the emitter of T 1 , the combination forming a three terminal unitary construction B, C, E. The device may be integrated (Fig. 3, not shown). Transistor T 2 may have a collector resistor (RC, Fig. 5, not shown) which provides a limit to the range of control of T 2 which saturates when its collector current reaches a value dependent upon the resistor (Rc). A capacitor (C B , Fig. 6, not shown) by-passes the base emitter junction of T 2 to improve switch-on speed. When the transistors are formed in the same semi-conductor chip, their characteristics, especially #, are closely correlated and T 2 provides optimum compensation for changes in gain of T 1 , which affect the saturation of T 1 , over a wide temperature range.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT5420767 | 1967-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1238204A true GB1238204A (en) | 1971-07-07 |
Family
ID=11286948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1238204D Expired GB1238204A (en) | 1967-12-21 | 1968-09-25 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1800796A1 (en) |
| FR (1) | FR1594654A (en) |
| GB (1) | GB1238204A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4818055U (en) * | 1971-07-09 | 1973-03-01 | ||
| NL7414273A (en) * | 1974-11-01 | 1976-05-04 | Philips Nv | LOGICAL CIRCUIT. |
| JPH04233323A (en) * | 1990-06-13 | 1992-08-21 | Internatl Business Mach Corp <Ibm> | Transistor circuit for clamping output voltage |
| JP2699823B2 (en) * | 1993-09-24 | 1998-01-19 | 日本電気株式会社 | Semiconductor integrated circuit |
-
1968
- 1968-09-25 GB GB1238204D patent/GB1238204A/en not_active Expired
- 1968-10-03 DE DE19681800796 patent/DE1800796A1/en active Pending
- 1968-10-10 FR FR1594654D patent/FR1594654A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1594654A (en) | 1970-06-08 |
| DE1800796A1 (en) | 1969-11-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |