GB1474823A - Integrated circuit for switching on/off an ac load - Google Patents
Integrated circuit for switching on/off an ac loadInfo
- Publication number
- GB1474823A GB1474823A GB2212675A GB2212675A GB1474823A GB 1474823 A GB1474823 A GB 1474823A GB 2212675 A GB2212675 A GB 2212675A GB 2212675 A GB2212675 A GB 2212675A GB 1474823 A GB1474823 A GB 1474823A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistors
- integrated circuit
- load
- switching
- tpn
- 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
- H03K17/68—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 specially adapted for switching ac currents or voltages
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
- Thyristors (AREA)
- Thyristor Switches And Gates (AREA)
Abstract
1474823 Dimming light sources ITT INDUSTRIES Inc 22 May 1975 [8 June 1974] 22126/75 Heading H2H A bipolar monolithic integrated circuit for effecting on-and-off switching of a A.C. load RL comprises a single semiconductor substrate having a control stage SS supplied by a positive voltage + U B and a switching stage consisting of two anti parallel-connected thyristors each analogous to a pair of complementary transistors Tpp, Tpn; Tnn, Tnp and two further transistors T1, T2, connected as shown, the substrate S of the integrated circuit being connected to the terminal of the thyristors remote from the load RL. As described, the invention is applicable to brightness control or a touch-operated switch with the integrated circuit located in a socket box of a mains supply system. In the ON condition, a signal to E operates the Schmitt or flip-flop SS such that transistors T1 ... T4 are off. The thyristor analagous to transistors Tpp, Tpn thus becomes conductive on positive half cycles and the other thyristor on negative half cycles of the mains supply U. The switch is turned off by transistors T1 .. T4 being turned on by the control circuit SS. A separate diode D may be included to increase the total reverse voltage. Resistors may be included between the base and emitter of T1, T2 or between the collectors of the complementary transistors. A capacitor formed by dimensioning the area and/or doping of the collector base junctions may be provided between the collectors of the complementary transistors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742427736 DE2427736C3 (en) | 1974-06-08 | Integrated circuit for switching AC consumers on and off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1474823A true GB1474823A (en) | 1977-05-25 |
Family
ID=5917651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2212675A Expired GB1474823A (en) | 1974-06-08 | 1975-05-22 | Integrated circuit for switching on/off an ac load |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5110342A (en) |
| AU (1) | AU8161175A (en) |
| FR (1) | FR2274175A1 (en) |
| GB (1) | GB1474823A (en) |
| IT (1) | IT1064092B (en) |
| ZA (1) | ZA753333B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2418548A (en) * | 2004-09-23 | 2006-03-29 | Zetex Plc | Bipolar transistor switching circuit |
| US7245174B2 (en) | 2004-09-23 | 2007-07-17 | Zetex Plc | Analogue switch |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT8435532V0 (en) * | 1984-01-23 | 1984-01-23 | Selenia Spazio Spa | SOLID STATE "RELAY" FOR SPATIAL AND AVIONIC USES |
-
1975
- 1975-05-22 GB GB2212675A patent/GB1474823A/en not_active Expired
- 1975-05-23 ZA ZA00753333A patent/ZA753333B/en unknown
- 1975-05-28 AU AU81611/75A patent/AU8161175A/en not_active Expired
- 1975-06-05 IT IT24017/75A patent/IT1064092B/en active
- 1975-06-06 FR FR7517667A patent/FR2274175A1/en active Granted
- 1975-06-09 JP JP50068679A patent/JPS5110342A/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2418548A (en) * | 2004-09-23 | 2006-03-29 | Zetex Plc | Bipolar transistor switching circuit |
| US7245174B2 (en) | 2004-09-23 | 2007-07-17 | Zetex Plc | Analogue switch |
| GB2418548B (en) * | 2004-09-23 | 2008-08-20 | Zetex Plc | Analogue switch |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2427736A1 (en) | 1976-01-08 |
| DE2427736B2 (en) | 1976-04-29 |
| FR2274175A1 (en) | 1976-01-02 |
| FR2274175B3 (en) | 1978-12-29 |
| AU8161175A (en) | 1976-12-02 |
| IT1064092B (en) | 1985-02-18 |
| ZA753333B (en) | 1976-04-28 |
| JPS5110342A (en) | 1976-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1012691A (en) | Electrical circuits for logic functions | |
| SE7907853L (en) | switching circuit | |
| GB1474823A (en) | Integrated circuit for switching on/off an ac load | |
| GB1408985A (en) | Constant current circuits | |
| GB1500364A (en) | Dc static switch circuit with transistor surge current pass capability | |
| JPS6439830A (en) | A/d converter | |
| ES435430A1 (en) | Zero crossing circuit for electronic ignition system | |
| SU600543A1 (en) | High-voltage dc stabilizer | |
| US3170070A (en) | Current detecting system | |
| US3280338A (en) | Constant current biasing circuit | |
| SU1571566A1 (en) | Controllable source of bipolar reference voltage | |
| SU552697A1 (en) | Boosting device | |
| GB1187107A (en) | Transistor Circuit for Supplying a Constant Current. | |
| ES8500468A1 (en) | Current stabilizing arrangement. | |
| SU773600A1 (en) | Voltage stabilizer | |
| SU1191898A2 (en) | D.c.electric power source | |
| SU985895A1 (en) | Two-step pulse shaper | |
| RU1810993C (en) | Commutating device | |
| JPS5634227A (en) | Switching driving circuit of bipolar transistor | |
| SU1524169A1 (en) | Ac switching device | |
| SU413627A1 (en) | ||
| SU675601A1 (en) | Electronic switch | |
| JP2592990B2 (en) | Voltage control circuit | |
| DK408985D0 (en) | CIRCUIT WITH TWO CONNECTION CLIPS | |
| EP0186284A3 (en) | Emitter coupled programmable oscillator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |