GB1309593A - Electronic circuit arrangement for actuating an electrically actuated bolt - Google Patents
Electronic circuit arrangement for actuating an electrically actuated boltInfo
- Publication number
- GB1309593A GB1309593A GB1348070A GB1348070A GB1309593A GB 1309593 A GB1309593 A GB 1309593A GB 1348070 A GB1348070 A GB 1348070A GB 1348070 A GB1348070 A GB 1348070A GB 1309593 A GB1309593 A GB 1309593A
- Authority
- GB
- United Kingdom
- Prior art keywords
- input
- transistor
- gate
- bolt
- inputs
- 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
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
- G07C9/00714—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with passive electrical components, e.g. resistor, capacitor, inductor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
- Electronic Switches (AREA)
Abstract
1309593 Releasable fastenings PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 March 1970 [25 March 1969] 13480/70 Heading E2A An electronic circuit arrangement for the actuation of an electrically actuated bolt (not shown) includes an electric signal generator G the output of which is connected, through a first electric circuit element I, to a first input of a comparator V, a second input of the comparator and the output of the signal generator being connected to contacts x, y and a detachable second electric circuit element II, which forms a key and which in operation, is connected between the contacts and in which the second electric circuit element determines two signal parameters of the signal applied to the second input of the comparator, and the output of the comparator is fed to a decision element B. An electronic circuit arrangement as claimed in claim 1 in which the output of the decision element is connected to a switch, in which in use the switch is closed at a time T seconds after the actuation of the unlocking sequence, to actuate the bolt, the time T seconds being determined by a monostable circuit. In the arrangement shown the signal generator produces either a sinusoidal voltage the frequency of which increases from a frequency f1 to a frequency f2 during a time T or alternatively a noise voltage; the two elements are band pass filters which are identical to each other and the comparator is a differential amplifier, the two inputs of which are connected to respective said filters. With the second filter in position identical signals are received at the two inputs of the differential amplifier and consequently the amplifier produces no output signals at its two outputs a and b. The absence of output signals from the differential amplifier causes the decision element to operate the bolt to releasing position; if the second filter is not in position or if an incorrect filter is in position the two inputs of the differential amplifier differ and thus the outputs differ and the decision element does not operate the bolt. However failure of the signal generator would also produce no output signals from the differential amplifier and to prevent the bolt being operated under such a condition a third input c of the decision element is fed directly from the signal generator and the decision element will not cause the bolt to move to releasing position unless there is input at c and no inputs at its two other inputs. The circuit of the decision element is shown in Fig. 2, the two output signals from the differential amplifier V are fed via diodes D1 and D2 to the base of a transistor T1 the base of which is also connected to earth via a resistor R1 and a capacitor C1. The collector of the transistor T1 is connected to one input of a two input AND gate P. The signal received directly from the signal generator to the input c passes to the second input of the AND gate P via a rectifying circuit. The second input of the AND gate is also connected through a diode D4 to earth, the diode D4 causing a constant potential of about 0.7 volts to be applied to the second input of the AND gate provided the signal is being received at the input c from a generator G this being interpreted by the AND gate as a logic 1 input and provided the transistor T1 is in a non-conductive state which will be the case if no inputs are being received via the diodes D1 and D2, the potential of the supply line +E volts will be applied to the other input of the AND gate which is also interpreted by the AND gate as a logic 1 input. The gate will therefore produce a logic 1 voltage at its output which causes a transistor T2 to become conductive if it is not already conductive and a transistor T3 to become non- conductive if it is not already non-conductive; the collector voltage of the transistor T3 will therefore be at E volts which is fed to a switch R which when closed applies the voltage to the electrically operated bolt to withdraw it. The transistors T2, T3 are conected to form a bistable multivibrator so that once the transistor T3 becomes non-conducting it will remain in this condition until a further signal is received by the two transistors to change their states. The values of the resistors R5 and R6 are such that when the circuit is switched on the transistor T2 will be in the conductive state. If either of the inputs of the AND gate is at logic O, logic O will appear at the output of the AND gate so that the transistor T2 becomes non-conductive and the transistor T3 becomes conductive and this prevents the bolt being released. The switch R is closed after the time T has elapsed by means of a monostable multivibrator MV.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6904542A NL6904542A (en) | 1969-03-25 | 1969-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1309593A true GB1309593A (en) | 1973-03-14 |
Family
ID=19806512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1348070A Expired GB1309593A (en) | 1969-03-25 | 1970-03-20 | Electronic circuit arrangement for actuating an electrically actuated bolt |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5139158B1 (en) |
BE (1) | BE747891A (en) |
DE (1) | DE2011626A1 (en) |
FR (1) | FR2039853A5 (en) |
GB (1) | GB1309593A (en) |
NL (1) | NL6904542A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109996366A (en) * | 2017-12-29 | 2019-07-09 | 简斯任 | LED illumination system with dimming function |
-
1969
- 1969-03-25 NL NL6904542A patent/NL6904542A/xx unknown
-
1970
- 1970-03-11 DE DE19702011626 patent/DE2011626A1/de active Pending
- 1970-03-20 GB GB1348070A patent/GB1309593A/en not_active Expired
- 1970-03-23 JP JP2400470A patent/JPS5139158B1/ja active Pending
- 1970-03-23 FR FR7010313A patent/FR2039853A5/fr not_active Expired
- 1970-03-24 BE BE747891D patent/BE747891A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109996366A (en) * | 2017-12-29 | 2019-07-09 | 简斯任 | LED illumination system with dimming function |
Also Published As
Publication number | Publication date |
---|---|
FR2039853A5 (en) | 1971-01-15 |
NL6904542A (en) | 1970-09-29 |
DE2011626A1 (en) | 1970-10-01 |
BE747891A (en) | 1970-09-24 |
JPS5139158B1 (en) | 1976-10-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |