Wireless Microphone Transmitter Receiver Circuit
L1 is a toroidal core T50-2 with 80 turns, 0.2mm Ø. L2 requires a 10-20cm ferrite bar, L2a has 3 turns, 0.6mm Ø coiled at ground end of L2b wich has 30 turns, 0.5mm Ø . The current consumption of the wireless transmitter is 150mA and is to be used with wireless headphones receiver. Receiver Section The wireless headphones receiver presented is an standard application of ZN415 produced by Ferranti (short wave receiver). ZN415 assures a quality reproduction, has a 1.5 battery alimentation and contains a MA detector and audio amplifier.
The current consumption is 5mA, L1 has 40 turns, 0.2 Ø copper and 20mm Ø ferrite. C1 is adjusted with an non metal screw, the reception frequency of this wireless headphone receiver is between 1.7MHz and 3.4MHz – shortwave receiver. This wireless receiver is to be used with wireless headphones transmitter.
No comments:
Post a Comment