US979145A - Electrical signaling. - Google Patents
Electrical signaling. Download PDFInfo
- Publication number
- US979145A US979145A US40774807A US1907407748A US979145A US 979145 A US979145 A US 979145A US 40774807 A US40774807 A US 40774807A US 1907407748 A US1907407748 A US 1907407748A US 979145 A US979145 A US 979145A
- Authority
- US
- United States
- Prior art keywords
- filament
- electrical signaling
- wire
- bolometer
- signaling
- 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 - Lifetime
Links
- 230000011664 signaling Effects 0.000 title description 5
- 230000033001 locomotion Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/06—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
- H03D1/18—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of semiconductor devices
Definitions
- My invention relates to i paratus for reld, DCvfng. electric signals and) more particu'- larlyv to means"foriani1 ifying the strength of received signals-.f
- the invention herein described 'has forits object the more etiicient'receipt fof electric signals andthe amplification of received signals and-the elimination of disturbing,r l influences. i .l
- 1 is an electro-magnet shown for convenience diagrammatically, but in practice having its pole pieces extending over the greater' part o'f the conducting filament 2, 2', so that this filament is in an intense magnetic field.
- To the middle of the filament is attached 'a Somewhat thicker ivireof aluminum 3, for the double purpose' of gvinga wider shadow and of makingthe 'filament' vibrate at a. more definite rate.
- eadsai'roii'set tube' 1l s o that'the air in the,Av gass tube 10, 10 may beppmped out.
- ' 12 is a moderately-.thick 'xvire'of platinum' iridium or the filament of. a Nernst lamp, excited by the dynamo l3'and regulated byivf)1 the adjustable resistance 14.
- the 15 and 16 are cylindrical lenses, for focusing the lradiant heat produced by tthe heated filament '12 on the bolometer wire 17, invilch a waythat ivhenthe 'wire 3 isin its norma-l 60 position the bolometer wire 17 vis in its Shadow, but when the Wire 3 is. shifted to lone side the radiant heat falls ori-the bolomon the bolometer wire 17 and changes its resistance, thereby actuating the sensitive re'- lay 2O and pfoduclnfr air indication.
- the natural )erio of the filament 10, 10 is preferably ad able resistance 7 so that it is identical with that of the received impulses. 1
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Magnetic Treatment Devices (AREA)
Description
A. PESSENDEN.
ELECTRICAL SIGNALING,
APPLICATION FILEB DBG.Z3,1907.
Patented Dec. 2G, 1919.
IN VEN TOR.
. UNITE-D STATES rieI ENT oEErCE.
REGINALD A. EESSENDEN, or BRANT ROCK, MASSACHUSETTS,
ELECTRICAL SIGNALING.
-l "'i'T alljwhqm iii 'may coi'weiat: 'Be 1t lrnown that'I. REmALn A. Fressennum, a citizen of the United States, residlng at- Brant Koeln/in the county o f Plymouth',
State of- Massachusetts, liaye'ini-'ented ce'rtain new and useful Improvementsin Elecvtrical Signaling, of which improvements the following is a Specification;
My invention relates to i paratus for reld, ceivfng. electric signals and) more particu'- larlyv to means"foriani1 ifying the strength of received signals-.f
.In the accompanying drawings forming a f partof this specification tle figure 'shows au arrangement of the apparatus Suitable for carrying out the invention.
The invention herein described 'has forits object the more etiicient'receipt fof electric signals andthe amplification of received signals and-the elimination of disturbing,r linfluences. i .l
In the practice of my invention I employ Sinle wire DArsonval galvanome'ter of meeting of 1894 and illustrated in U. S. Patent 706,737 Figure 2, and cause this galvanometer' to alter the'rcsistance of a local circuit.'
In the figure, 1 is an electro-magnet shown for convenience diagrammatically, but in practice having its pole pieces extending over the greater' part o'f the conducting filament 2, 2', so that this filament is in an intense magnetic field. To the middle of the filament is attached 'a Somewhat thicker ivireof aluminum 3, for the double purpose' of gvinga wider shadow and of makingthe 'filament' vibrate at a. more definite rate.
40 The lovver end ofthe filament iS attached to'J va small lever 4; vcarrying a small'- piece o f iron 5 and s o arranged that by adjusting the sliding contact 6 of the resistance 7 and so altering the current from the local 'battery i5 8, and theistiength of the magnet 9, the fila- Ament is ut under more or less tension -and thereby lts natural frequency of vibration is adjusted: A
The filament and the lever referred to are inclosed in a glass tube 10, 10 from which Specification of Letters 1 Application filed December 23, 1907,
thegtype described by Vme at the American ociation for theAdvancement of Science iatented'neefzo, 191e;
eadsai'roii'set tube' 1l s o that'the air in the,Av gass tube 10, 10 may beppmped out.
' 12 is a moderately-.thick 'xvire'of platinum' iridium or the filament of. a Nernst lamp, excited by the dynamo l3'and regulated byivf)1 the adjustable resistance 14.
15 and 16 are cylindrical lenses, for focusing the lradiant heat produced by tthe heated filament '12 on the bolometer wire 17, invilch a waythat ivhenthe 'wire 3 isin its norma-l 60 position the bolometer wire 17 vis in its Shadow, but when the Wire 3 is. shifted to lone side the radiant heat falls ori-the bolomon the bolometer wire 17 and changes its resistance, thereby actuating the sensitive re'- lay 2O and pfoduclnfr air indication.
The natural )erio of the filament 10, 10 is preferably ad able resistance 7 so that it is identical with that of the received impulses. 1
Having` thus described 'in v. invention and illustrated its use, what Iclaim as new and. desire to secure by Letters Patent is the following: v
1.111 al system of'signaling. a galva'pometer, adapted to produce a motion on. receipt of-the signals 4to be detected, a sourceof radiant heat, a bolometer circuit, and means for focusing' the radiantlieatso tl 1at',=t;l1e movement of the galvanometerdetermines the amount of said radiant heat falling on the bolometer.
2. In apparatus vfor signaling, the combi-4 95;v nation of a galvanometer adapted to pro# `f duce a motion" on receipt of the' signals to be detected, a Source of radlant heat, a
bolometer circuitcom prising a Wire'whose Y resistance alters on being exposed to radlant 1Q justed by means oi the varie., '3o
heat so that theshndow 0i thc movmg mrt'. i stl'mfr a 'nonounced natural' )erlocl of vlbrug hun, :mgl clectromagncilcmenus for adjustpt-bf th signals to g -lnggj szml mllnrzll p'cnod of#ubratlol-l.'A .15 f {rl tstm'mny whereof I hnvc hereunder sxgngd -mv name mthe presence, of the s ub-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40774807A US979145A (en) | 1907-12-23 | 1907-12-23 | Electrical signaling. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40774807A US979145A (en) | 1907-12-23 | 1907-12-23 | Electrical signaling. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US979145A true US979145A (en) | 1910-12-20 |
Family
ID=3047521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US40774807A Expired - Lifetime US979145A (en) | 1907-12-23 | 1907-12-23 | Electrical signaling. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US979145A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2378583A1 (en) | 2006-12-01 | 2011-10-19 | The Trustees of Princeton University | Organic photovoltaic cells utilizing ultrathin sensitizing layer |
-
1907
- 1907-12-23 US US40774807A patent/US979145A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2378583A1 (en) | 2006-12-01 | 2011-10-19 | The Trustees of Princeton University | Organic photovoltaic cells utilizing ultrathin sensitizing layer |
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