SUPPRESSING CIRCUIT FOR DC COMPONENT

摘要

PURPOSE:To enable a simply-constituted circuit to prevent deterioration due to a DC break, by suppressing a DC component by a code converter circuit which inverts the polarity of a signal or controls it as it is depending upon the integration value of a transmitting signal. CONSTITUTION:Integrating circuit 7 integrates an output voltage, and comparator circuit 8 compares the output of circuit 7 with a preset reference voltage. Then, its DC component is suppressed by providing gate circuit 3 which inverts 4 the polarity of the output voltage or controls it as a positive-polarity code is judging from the result of circuit 8. Consequently, deterioration due to a DC break can be prevented with simple constitution.