Patent application number | Description | Published |
20090257260 | ANALOG INPUT DEVICE - An analog input device according to the present invention includes a scanning circuit ( | 10-15-2009 |
20100019828 | ANALOG MULTIPLEXER WITH INSULATION POWER SUPPLY - An analog multiplexer with an insulated power supply includes: an analog signal transformer receiving an analog signal input in its primary winding via an FET, and ON/OFF driving the FET to generate a pulse with an amplitude of the analog signal in its secondary winding; a drive transformer receiving a drive pulse input in its primary winding via an FET to generate a pulse turning ON/OFF the FET in its secondary winding; an inhibit generation circuit generating an inhibit pulse having a wider pulse width than that of the drive pulse; an AND gate determining a logical product of a continuous pulse from a continuous pulse generation circuit and the inhibit pulse to obtain a power supply pulse train; and a rectifying/smoothing circuit obtaining a direct current voltage corresponding to the power supply pulse train to apply the direct current voltage to the primary winding of the transformer through high resistance. | 01-28-2010 |
20100164772 | ANALOG INPUT DEVICE - An amplifier for amplifying a pulse-like signal output from a secondary side of an isolating transformer, a capacitor connected to a negative feedback loop across the input and output of the amplifier, and a timing control circuit for controlling an FET into a closed state, then controlling a switch into a closed state, and after that controlling the switch into an open state at timing simultaneously with the FET or earlier than the FET are provided, and when the switch is controlled into the open state, an AD converter converts the output signal of the amplifier to a digital signal. | 07-01-2010 |
20110254527 | ANALOG CURRENT OUTPUT CIRCUIT - In the analog current output circuit according to the present invention, a rising start position and a tilt of an internal control voltage are set such that it crosses, at the maximum of an analog output current, a load end voltage obtained when the resistance of a load is the one near the center of a specification range. According to a comparison result in a comparator, a switch causes a DC/DC converter to input a high reference voltage and causes an output transistor to output a high power supply voltage when the internal control voltage is smaller than the load end voltage and causes the DC/DC converter to input a low reference voltage and causes the output transistor to output a low power supply voltage when the internal control voltage is larger than the load end voltage. | 10-20-2011 |
20120249209 | TRANSMISSION SYSTEM - Provided is a transmission system capable of improving the SN ratio for noise superimposed on a transmission line and extending the dynamic range. The transmission system transmits a signal between a transmitter ( | 10-04-2012 |
20140119461 | SIGNAL TRANSMISSION DEVICE - A signal transmission device includes: a detector circuit that detects impulse noises having been applied to the transmission line, the detector circuit being composed of an analog circuit; a noise counter that counts the impulse noises detected by the detector circuit and observes occurrence intervals of the impulse noises; and a data length changer that varies a data length of the communication frames depending on the occurrence intervals of the impulse noises observed by the noise counter. | 05-01-2014 |