NL273437A - - Google Patents
Info
- Publication number
- NL273437A NL273437A NL273437DA NL273437A NL 273437 A NL273437 A NL 273437A NL 273437D A NL273437D A NL 273437DA NL 273437 A NL273437 A NL 273437A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/10—Control of transmission; Equalising by pilot signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/10—Measuring sum, difference or ratio
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1296—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the feedback circuit comprising a transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST17342A DE1133822B (de) | 1961-01-13 | 1961-01-13 | Schaltungsanordnung zur Anzeige bereits geringer Abweichungen der Amplitude einer Wechselspannung von einem vorgegebenen Sollwert |
Publications (1)
Publication Number | Publication Date |
---|---|
NL273437A true NL273437A (nl) |
Family
ID=7457438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL273437D NL273437A (nl) | 1961-01-13 |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE612560A (nl) |
DE (1) | DE1133822B (nl) |
NL (1) | NL273437A (nl) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1762390B1 (de) * | 1968-05-13 | 1970-05-06 | Standard Elek K Lorenz Ag | Schaltungsanordnung zur UEberwachung einer Umschalteinrichtung zwischen zwei Nachrichtengeraeten,insbesondere zwischen zwei Traegerstromgeneratoren |
DE2262939C3 (de) * | 1972-12-22 | 1981-04-23 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltung zum Auswerten pulsmodulierter Wechselspannungen, insbesondere Pilotspannungen in Trägerfrequenzsystemen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE938624C (de) * | 1952-04-10 | 1956-02-02 | Siemens Ag | Schaltungsanordnung zur Anzeige der UEberschreitung eines Schwell-werts, vorzugsweise zur Anzeige kurzzeitiger Spannungsimpulse, insbesondere in Fernmeldeanlagen |
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0
- NL NL273437D patent/NL273437A/xx unknown
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1961
- 1961-01-13 DE DEST17342A patent/DE1133822B/de active Pending
-
1962
- 1962-01-12 BE BE612560A patent/BE612560A/nl unknown
Also Published As
Publication number | Publication date |
---|---|
DE1133822B (de) | 1962-07-26 |
BE612560A (nl) | 1962-07-12 |