GB871615A - Electronic detectors and counters - Google Patents
Electronic detectors and countersInfo
- Publication number
- GB871615A GB871615A GB2720456A GB2720456A GB871615A GB 871615 A GB871615 A GB 871615A GB 2720456 A GB2720456 A GB 2720456A GB 2720456 A GB2720456 A GB 2720456A GB 871615 A GB871615 A GB 871615A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- tuned
- circuit
- oscillation
- resistor
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/08—Design features of general application for actuating the drive
- G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/955—Proximity switches using a capacitive detector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K21/00—Details of pulse counters or frequency dividers
- H03K21/02—Input circuits
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Jigging Conveyors (AREA)
Abstract
871,615. Electric tests. BURNDEPT Ltd. Dec. 5, 1957 [Sept. 5, 1956], No. 27204/56. Class 37. The presence of a body is detected by a tuned anode-tuned grid oscillator the reactance of one of the tuned circuits of which is so modified by the body that oscillation ceases. As shown, the oscillator comprises triode having crystal 2 and resistor 3 in the grid circuit and tuned circuit 4 in series with the anode. The body to be detected, e.g. a dry cell brought by a conveyer to a filling or sealing device increases the capacitance to earth of plate 11 connected to the anode of the triode so that oscillation ceases. The increase of current in the anode circuit operates a relay 14 connected between the potentiometer tapping and the junction of resistor 5 with the tuned circuit to effect any desired control and to connect capacitor 19 into the anode circuit so ensuring that oscillation restarts when the object moves away. Movement of the relay armature may reduce the capacity between the armature and an adjustable plate 22 connected in parallel with the anode capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2720456A GB871615A (en) | 1956-09-05 | 1956-09-05 | Electronic detectors and counters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2720456A GB871615A (en) | 1956-09-05 | 1956-09-05 | Electronic detectors and counters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB871615A true GB871615A (en) | 1961-06-28 |
Family
ID=10255865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2720456A Expired GB871615A (en) | 1956-09-05 | 1956-09-05 | Electronic detectors and counters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB871615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3171066A (en) * | 1960-07-05 | 1965-02-23 | Tung Sol Electric Inc | Touch control circuits |
-
1956
- 1956-09-05 GB GB2720456A patent/GB871615A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3171066A (en) * | 1960-07-05 | 1965-02-23 | Tung Sol Electric Inc | Touch control circuits |
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