NL246661A - - Google Patents

Info

Publication number: NL246661A
Authority: NL; Netherlands

Application number

Priority date (The priority date 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 date listed.)

1959-12-21

Publication of NL246661A publication Critical patent/NL246661A/xx

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/14—Arrangements for performing computing operations, e.g. operational amplifiers for addition or subtraction
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
- H03F3/52—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Mathematical Physics (AREA)
Power Engineering (AREA)
Theoretical Computer Science (AREA)
Software Systems (AREA)
Computer Hardware Design (AREA)
General Physics & Mathematics (AREA)
Amplifiers (AREA)

NL246661D 1959-12-21 NL246661A (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL246661		1959-12-21

Publications (1)

Publication Number	Publication Date
NL246661A true NL246661A (de)

Family

ID=19752097

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
NL102035D NL102035C (de)	1959-12-21
NL246661D NL246661A (de)	1959-12-21

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
NL102035D NL102035C (de)	1959-12-21

Country Status (4)

Country	Link
US (1)	US3123779A (de)
DE (1)	DE1115768B (de)
GB (1)	GB935559A (de)
NL (2)	NL246661A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1148270B (de) *	1962-07-18	1963-05-09	Telefunken Patent	Schaltungsanordnung zur Summen- und Differenzbildung zweier Niederfrequenz-signale fuer stereophonische UEbertragungen
US3259758A (en) *	1963-09-13	1966-07-05	Itek Corp	Sum and difference circuit
US3688129A (en) *	1969-08-26	1972-08-29	Sony Corp	Signal control circuit
US3952259A (en) *	1975-04-28	1976-04-20	Rockwell International Corporation	Gain control apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2432826A (en) *	1945-08-01	1947-12-16	F W Sickles Company	Differential vacuum tube voltmeter
US2727682A (en) *	1949-11-30	1955-12-20	Sun Oil Co	Analog computer or analyzer
US2705265A (en) *	1951-06-07	1955-03-29	Cecil T Hall	Parallel opposed power amplifiers
US2903524A (en) *	1956-01-31	1959-09-08	Ca Atomic Energy Ltd	D-c amplifier

0
- NL NL102035D patent/NL102035C/xx active
- NL NL246661D patent/NL246661A/xx unknown
- US US3123779D patent/US3123779A/en not_active Expired - Lifetime
1960
- 1960-12-16 GB GB43396/60A patent/GB935559A/en not_active Expired
- 1960-12-20 DE DEN19344A patent/DE1115768B/de active Pending

Also Published As

Publication number	Publication date
DE1115768B (de)	1961-10-26
GB935559A (en)	1963-08-28
NL102035C (de)
US3123779A (en)	1964-03-03

Publication	Publication Date	Title
AT221460B (de)	1962-05-25
AT227430B (de)	1963-05-27
AT213532B (de)	1961-02-27
AT213496B (de)	1961-02-27
AT216639B (de)	1961-08-10
AT216640B (de)	1961-08-10
BE575800A (de)	1959-06-15
BE575321A (de)	1959-08-03
NL247706A (de)
BE584735A (de)
BE585297A (de)
BE461618A (de)
BE567011A (de)
BE585435A (de)
BE585872A (de)
BE585935A (de)
BE585940A (de)
BE586050A (de)	1960-04-19
BE586250A (de)	1960-05-03
BE586259A (de)
BE584847A (de)
BE568263A (de)
BE570722A (de)
BE574478A (de)
NL102035C (de)