Carrier-Current Receiver for Data Transmission
Created: Jan 07, 2015
No description available.
This receiver consists of an input network amplifier U7, FSK PLL detector U6, and output amplifier/interface Q2, Q3, U3A and U3B, a 1488 Quad RS232 line driver of the carrier-current signal. Tuned amplifier U7 amplifies this signal and drives PLL detector U8. The values shown in the circuit are suitable for operation in the 100-kHz range. Recovered data at pins 5, 6, 7 is fed to the output amplifier/interface circuit. This circuit is also used with the carrier-current data transmitter to form a pair.