| 摘要 |
FIELD: electric communications. SUBSTANCE: currents that are inducted in two-wire symmetric microphone cable are killed due to introduced compensating transformer and capacitor plates that are connected in parallel. Influence of electromagnetic field of radio transmitting devices is eliminated due to electric connection along perimeter between board and housing, connection is provided by flange on board and recess in device housing and in board. EFFECT: increased stability to electromagnetic noise caused by outer radio sources of various frequencies. |
