| 摘要 |
FIELD: medical engineering. SUBSTANCE: device has high frequency voltage generator, transducer unit, differential amplifier included in series into measuring unit and recording unit. The generator id of quartz type, the transducer unit is produced as parallel oscillation circuit having measuring inductance coil and variable capacity capacitor. Leads of the oscillation circuit are connected to output leads of the generator and input leads of the differential amplifier. Narrow band width quartz filter is set between differential amplifier output and measuring unit input. EFFECT: high level of medical safety; enhanced accuracy of cerebrocranial trauma diagnosis. 3 dwgf
|
