FIELD: electrical engineering. SUBSTANCE: method includes placing filament in external magnetic field, varying its vibration frequency, and determining its resonant frequency by maximal ac voltage recorded by means of voltmeter; novelty is that light source is supplied with DC current of 0.01 to 8 A and filament vibration frequency is varied by means of magnetic field built up by electromagnet. In this way, invisible resonant frequencies of light source can be determined under working conditions at rated and filament currents affording desired filament vibrations at specified flux density. EFFECT: facilitated procedure. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD DETERMINING PRESSURE IN DISCHARGE LAMPS | 2001 |
|
RU2199791C2 |
| PHOTOCHEMICAL GENERATOR OF ELECTROMAGNETIC OSCILLATIONS | 0 |
|
SU894505A1 |
| ANGULAR ACCELEROMETER | 1991 |
|
SU1793802A1 |
| DEVICE FOR REMOTE MEASUREMENT OF ELECTRICAL AND MAGNETIC PARAMETERS OF SUPERCONDUCTOR SPECIMENS AT PHASE TRANSITION | 0 |
|
SU1675809A1 |
| DEVICE FOR STARTING GAS-DISCHARGE LAMP | 2001 |
|
RU2211549C2 |
| GEAR TO BAKE OUT SPIRALS FOR LUMINOUS ELEMENTS OF LIGHT SOURCES | 1999 |
|
RU2178930C2 |
| MAGNETOSTRICTIVE CONVERTER | 1993 |
|
RU2046030C1 |
| METHOD AND DEVICE FOR CONTROL OF LIGHT SOURCE FILAMENT BODY SPIRAL COILING | 1991 |
|
RU2081476C1 |
| METHOD OF CONTROL OF QUALITY OF COILS FOR LUMINOUS ELEMENTS OF SOURCES OF LIGHT AND DEVICE FOR ITS IMPLEMENTATION | 0 |
|
SU1669017A1 |
| DEVICE FOR CONTROLLING AUTOMATED MEANS FOR MEASURING ARTERIAL BLOOD PRESSURE AND HEART BEAT RATE | 2001 |
|
RU2210974C2 |
