GB1039479A - Improvements in or relating to transistor circuit arrangements - Google Patents
Improvements in or relating to transistor circuit arrangementsInfo
- Publication number
- GB1039479A GB1039479A GB40167/64A GB4016764A GB1039479A GB 1039479 A GB1039479 A GB 1039479A GB 40167/64 A GB40167/64 A GB 40167/64A GB 4016764 A GB4016764 A GB 4016764A GB 1039479 A GB1039479 A GB 1039479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- emitter
- current
- resistors
- increase
- 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
- H03K17/28—Modifications for introducing a time delay before switching
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
- G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Electronic Switches (AREA)
Abstract
1,039,479. Transistor circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 2, 1964 [Oct. 7, 1963], No. 40167/64. Heading H3T. In the transistor timer circuit shown the voltage at the emitter of transistor 12 is stabilized by connecting a non-linear element 15, such as a voltage dependent resistor, or a Zener diode, in parallel with the emitter-collector path and the relay load 14. The circuit is connected to a D.C. supply of high internal resistance and the capacitor 5 is charged by depressing pushbutton switch 4. The potential now at the junction between resistors 6 and 7 causes transistor 10 to conduct so that current flows from its emitter through the base-emitter circuit of transistor 12, which conducts to operate the relay. When the transistor cuts-off due to discharge of the capacitor 5 the current through resistor 13 is maintained by an increase in current through the non-linear element 15. In alternative circuits (Figs. 2 and 3, not shown), for use as a thermostat, an increase in temperature causes the current through the negative temperature coefficient resistor 7 to increase and so cause transistor 12 to conduct and operate the relay. The resistors 7 and 13 can be interchanged or can be replaced by positive temperature coefficient resistors. Variation in mains supply can be further compensated for by an additional non-linear element 19.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL63298905A NL147276B (en) | 1963-10-07 | 1963-10-07 | TRANSISTOR CONNECTION. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1039479A true GB1039479A (en) | 1966-08-17 |
Family
ID=19755115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40167/64A Expired GB1039479A (en) | 1963-10-07 | 1964-10-02 | Improvements in or relating to transistor circuit arrangements |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS425695B1 (en) |
| BE (2) | BE640715A (en) |
| DE (1) | DE1226158B (en) |
| GB (1) | GB1039479A (en) |
| NL (2) | NL147276B (en) |
| SE (1) | SE301827B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2134736A (en) * | 1982-12-14 | 1984-08-15 | Pioneer Electronic Corp | Signal generating circuit |
-
0
- NL NL298905D patent/NL298905A/xx unknown
-
1963
- 1963-10-07 NL NL63298905A patent/NL147276B/en unknown
- 1963-12-02 BE BE640715A patent/BE640715A/xx unknown
-
1964
- 1964-10-02 GB GB40167/64A patent/GB1039479A/en not_active Expired
- 1964-10-05 DE DEN25641A patent/DE1226158B/en active Pending
- 1964-10-05 JP JP5651764A patent/JPS425695B1/ja active Pending
- 1964-10-05 BE BE653989A patent/BE653989A/xx unknown
- 1964-10-07 SE SE12041/64A patent/SE301827B/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2134736A (en) * | 1982-12-14 | 1984-08-15 | Pioneer Electronic Corp | Signal generating circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| SE301827B (en) | 1968-06-24 |
| BE653989A (en) | 1965-04-05 |
| DE1226158B (en) | 1966-10-06 |
| NL147276B (en) | 1975-09-15 |
| BE640715A (en) | 1964-04-01 |
| NL298905A (en) | 1900-01-01 |
| JPS425695B1 (en) | 1967-03-08 |
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