| 摘要 |
FIELD: medical engineering. SUBSTANCE: device has high frequency generator and N channels, each of which having transformer gage connected to differential amplifier inputs and measuring unit and recorder mounted in series. Buffer amplifier which input is connected to high frequency generator output through additional resistor and output is connected to gage output, and band-pass quartz filter which input is connected to measuring unit output. The transformer gage is produced in every channel as parallel oscillation circuit having measuring inductance coil with communication winding, permanent capacity capacitor and variable capacity capacitor connected in parallel. Communication winding outlet leads are inputs to the transformer gage which outputs are those of the main winding through capacitors. The high frequency generator is realized as quartz type generator. EFFECT: enhanced accuracy in setting diagnosis of a cardiovascular disease. 2 cl, 2 dwge
|
