PURPOSE: To generate duty signals having high precision and mutually antiphase signals at low cost by mounting a start-signal generating circuit, an inversion signal generating circuit and first and second output circuits.
CONSTITUTION: A start-signal generating circuit B generates signals displaying the start of duty signals at every fixed time interval, and an inversion signal generator. A generates inversion signals at the time of the completion of duty poriods given as the result of the operation of a computer. First and second output circuits C, D receive start signals and inversion signals, and the first output circuit C generates outputs at a high level by the start signals, but the second output circuit generates outputs at a low level. Outputs from the first output circuit C are inverted to the low level from the high level by the inversion signals, outputs from the second output circuit D are inverted to the high level from the low level, and two duty signals having mutually antiphase are generated from the first and second output circuits C, D. Accordingly, two antiphase duty signals mutually having no delay time are acquired without using an inverter.
NISHIBORI KAZUYOSHI
SAITO AKIRA
TAJIMA SHIGEHIKO
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