Signal output device
A signal output and signal generation technology, applied in signal transmission systems, transportation and packaging, instruments, etc., can solve problems such as unable to restore output, unable to ensure system stability, etc., to achieve the effect of ensuring stability and preventing adverse effects
Active Publication Date: 2020-07-17
DENSO CORP
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Abstract
In the present invention an output terminal (23) of a signal output device (20) is connected via a branch path (33) to a voltage division point (D) provided in the middle of main trunk paths (31, 32)connecting a power supply terminal (21) and a ground terminal (22), and transmits an output signal based on the voltage of the voltage division point (D) to the outside. A signal generation circuit (60) adjusts the voltage of the voltage division point (D) and generates the output signal. A short-circuit detection circuit (50) detects a short-circuit between the output terminal (23) and the otherterminals when a current flowing in the branch path (33) is greater than a prescribed short-circuit detection threshold value. When a short-circuit is detected by the short-circuit detection circuit (50) switching circuits (61, 62) switch the conduction capacity or the configuration of the signal generation circuit (60), thereby limiting the short-circuit current flowing in the branch path (33). The short-circuit current is set to a value equal to or greater than the short-circuit detection threshold value and less than an upper limit current value based on the supply capacity of a direct-current power supply.
Application Domain
Transmission systemsShort-circuit testing +2
Technology Topic
TelecommunicationsHemt circuits +5
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