GB624543A - Modulation systems - Google Patents
Modulation systemsInfo
- Publication number
- GB624543A GB624543A GB15375/47A GB1537547A GB624543A GB 624543 A GB624543 A GB 624543A GB 15375/47 A GB15375/47 A GB 15375/47A GB 1537547 A GB1537547 A GB 1537547A GB 624543 A GB624543 A GB 624543A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- producing
- diode
- fed
- pulse
- 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
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/001—Air flow directing means positioned on the periphery of the horizontally rotating milling surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/04—Position modulation, i.e. PPM
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/1006—Mills adapted for use with furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Crushing And Grinding (AREA)
- Amplitude Modulation (AREA)
- Pulse Circuits (AREA)
Abstract
624,543. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. June 11, 1947, No. 15375. Convention date, May 13, 1946. [Class 40 (v)] In an arrangement for producing pairs of timemodulated pulses a pulse generator 10, Fig. 3, feeds X pulses, Fig. 4, to a delay device 11 producing Y pulses, which are fed to a triangular pulse generator 13, a further delay device 12 producing Z pulses, and an amplitude modulator 14, which is also fed by a signal source 15, so as to produce Ym pulses. The Ym pulses are fed together with X pulses to a device 16 producing amplitude modulated rectangular waves, which are combined with the triangular waves in a device 17 to produce the output shown in Fig. 4G. On differentiating, rectifying and clipping the pulses, pairs of timemodulated pulses, Fig. 4H, are obtained. The device 16 comprises two diodes 19, 20, Ym pulses being supplied in a positive sense to the anode of diode 19, thus charging the condenser ,24, diode 20 being normally cut-off. The diode 20 is unblocked by the following X pulse so as to discharge the condenser 24, thus producing the amplitude modulated rectangular pulses, shown at Fig. 4F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60541066A | 1966-12-28 | 1966-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB624543A true GB624543A (en) | 1949-06-10 |
Family
ID=24423550
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15375/47A Expired GB624543A (en) | 1966-12-28 | 1947-06-11 | Modulation systems |
| GB45315/67A Expired GB1189317A (en) | 1966-12-28 | 1967-10-04 | Rotary Bowl Mill |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB45315/67A Expired GB1189317A (en) | 1966-12-28 | 1967-10-04 | Rotary Bowl Mill |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3465971A (en) |
| BE (2) | BE705087A (en) |
| CH (1) | CH484701A (en) |
| ES (1) | ES346000A1 (en) |
| FR (1) | FR929389A (en) |
| GB (2) | GB624543A (en) |
| NL (2) | NL6714390A (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3223286A (en) * | 1961-08-16 | 1965-12-14 | Gen Turbine Corp | Portable sprayer with air operated mixing means |
| JPS5415348B2 (en) * | 1975-01-28 | 1979-06-14 | ||
| JPS5813950Y2 (en) * | 1979-01-19 | 1983-03-18 | 川崎重工業株式会社 | Fine grinding device |
| JPS5814822B2 (en) * | 1979-01-19 | 1983-03-22 | 川崎重工業株式会社 | Stator structure of vortex type pulverizer |
| US4234132A (en) * | 1979-05-21 | 1980-11-18 | Combustion Engineering, Inc. | Bowl mill with air deflector means |
| GB2181971B (en) * | 1985-10-29 | 1988-11-09 | Smidth & Co As F L | Vertical roller mill |
| US4754932A (en) * | 1987-03-18 | 1988-07-05 | Combustion Engineering, Inc. | Coal pulverizer inerting and fire extinguishing system |
| JPH0757324B2 (en) | 1987-03-24 | 1995-06-21 | 三菱重工業株式会社 | Roller mill with rotary classifier |
| US4792099A (en) * | 1987-04-29 | 1988-12-20 | Combustion Engineering, Inc. | Pulverizer auxiliary lubrication system |
| DE19806895C2 (en) * | 1998-02-19 | 2002-10-24 | Pfeiffer Ag Geb | Method and device for optimizing the milling bed of roller-type bowl mills |
| US5875977A (en) | 1998-05-13 | 1999-03-02 | Combustion Engineering, Inc. | Technique for improving the response time of pulverized coal boilers |
| US6079648A (en) | 1999-03-01 | 2000-06-27 | Combustion Engineering, Inc. | Arrangement for securing a vane wheel assembly to a grinding table of a pulverizing bowl mill |
| US7252253B2 (en) * | 2003-05-13 | 2007-08-07 | Bharat Heavy Electricals Ltd. | Bowl mill for a coal pulverizer with an air mill for primary entry of air |
| US7267293B2 (en) * | 2005-05-13 | 2007-09-11 | Alstom Technology Ltd | High efficiency bowl mill |
| DE102005030145B4 (en) * | 2005-06-28 | 2007-10-04 | Loesche Gmbh | Safety system for a roller mill |
| US7448565B2 (en) * | 2006-09-01 | 2008-11-11 | Alstom Technology Ltd | Low profile primary classifier |
| US7584917B2 (en) * | 2007-03-29 | 2009-09-08 | Alstom Technology Ltd | Seal for coiled spring assembly |
| US7690590B2 (en) * | 2008-06-13 | 2010-04-06 | Alstom Technology Ltd | Electronically controlled journal loading system |
| US8087172B2 (en) * | 2008-09-26 | 2012-01-03 | Alstom Technology Ltd. | Method and apparatus for extended life journal assembly |
| US8491196B2 (en) | 2008-11-11 | 2013-07-23 | Babcock Power Services, Inc. | Bearing upgrade and kit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2206145A (en) * | 1938-12-22 | 1940-07-02 | Comb Eng Co Inc | Air flow choke for bowl mills |
| US2431746A (en) * | 1944-08-25 | 1947-12-02 | Comb Eng Co Inc | Bowl mill with vane means providing uniform velocity upwardly swirling air currents |
| US2641387A (en) * | 1947-02-27 | 1953-06-09 | Simpson Herbert Corp | Mixing machine discharge door |
| US2698142A (en) * | 1953-02-03 | 1954-12-28 | Combustion Eng | Bowl mill with novel bowl and air flow directing means |
| US2818219A (en) * | 1954-03-24 | 1957-12-31 | Straight Engineering Co | Dry pan scraper |
-
0
- BE BE475118D patent/BE475118A/xx unknown
- NL NL132163D patent/NL132163C/xx active
-
1946
- 1946-05-13 FR FR929389D patent/FR929389A/en not_active Expired
-
1947
- 1947-06-11 GB GB15375/47A patent/GB624543A/en not_active Expired
-
1966
- 1966-12-28 US US605410A patent/US3465971A/en not_active Expired - Lifetime
-
1967
- 1967-10-04 GB GB45315/67A patent/GB1189317A/en not_active Expired
- 1967-10-11 ES ES346000A patent/ES346000A1/en not_active Expired
- 1967-10-13 BE BE705087D patent/BE705087A/xx not_active IP Right Cessation
- 1967-10-23 NL NL6714390A patent/NL6714390A/xx unknown
- 1967-10-25 CH CH1488067A patent/CH484701A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL132163C (en) | |
| GB1189317A (en) | 1970-04-22 |
| CH484701A (en) | 1970-01-31 |
| NL6714390A (en) | 1968-07-01 |
| US3465971A (en) | 1969-09-09 |
| BE475118A (en) | |
| FR929389A (en) | 1947-12-24 |
| ES346000A1 (en) | 1969-01-16 |
| BE705087A (en) | 1968-04-16 |
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