| 摘要 |
FIELD: radio engineering. ^ SUBSTANCE: proposed radio receiving device has antenna connected to input of receiver-detector unit whose output is connected to input of low-frequency amplifier, as well as power supply whose positive pole is connected through switch to power input of low-frequency amplifier and negative one, to common leads of low-frequency amplifier, receiver-detector unit, and RC filtering circuit; power input of receiver-detector unit is connected to output of RC filtering circuit and input of the latter, to cathode of light-emitting diode whose anode is connected to power input of low-frequency amplifier. ^ EFFECT: enhanced power efficiency of radio receiving device. ^ 1 cl, 1 dwg |
