NL246661A - - Google Patents
Info
- Publication number
- NL246661A NL246661A NL246661DA NL246661A NL 246661 A NL246661 A NL 246661A NL 246661D A NL246661D A NL 246661DA NL 246661 A NL246661 A NL 246661A
- Authority
- NL
- Netherlands
Links
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL246661 | 1959-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL246661A true NL246661A (hr) |
Family
ID=19752097
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL102035D NL102035C (hr) | 1959-12-21 | ||
| NL246661D NL246661A (hr) | 1959-12-21 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL102035D NL102035C (hr) | 1959-12-21 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3123779A (hr) |
| DE (1) | DE1115768B (hr) |
| GB (1) | GB935559A (hr) |
| NL (2) | NL246661A (hr) |
Families Citing this family (4)
| 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)
| 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
- US US3123779D patent/US3123779A/en not_active Expired - Lifetime
- NL NL246661D patent/NL246661A/xx unknown
-
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 |
|---|---|
| NL102035C (hr) | |
| DE1115768B (de) | 1961-10-26 |
| GB935559A (en) | 1963-08-28 |
| US3123779A (en) | 1964-03-03 |