Abstract: A booster circuit includes a boost converter configured to boost an input voltage and performs feedback control such that an output voltage becomes a set value on the basis of a voltage applied to a feedback terminal and an internal feedback reference voltage, a power supply unit configured to generate a reference voltage with a smaller error than the feedback reference voltage, and a control unit configured to compare a voltage corresponding to the output voltage of the boost converter with the reference voltage, and configured to output a control signal indicating a comparison result to the feedback terminal of the boost converter.

Abstract: A current output module includes a current output section configured to output a current, an AD conversion circuit configured to convert a detection voltage, which is a voltage according to the current output from the current output section, into a digital value, a controller configured to control a current output from the current output section on the basis of the digital value of the detection voltage output from the AD conversion circuit, and a reference voltage generator configured to generate a plurality of reference voltages. The controller includes a processor configured to cause the AD conversion circuit to convert each of the plurality of reference voltages into a digital value, and a corrector configured to calibrate the AD conversion circuit on the basis of each digital value obtained by conversion of the plurality of reference voltages.

Abstract: An identification circuit (10) for identifying one circuit board (30) among a plurality of circuit boards (30) includes a switching element (11) that switches the one circuit board (30) electrically connected to the identification circuit (10) among the plurality of circuit boards (30), a circuit element group (12) electrically connected to the switching element (11), and a controller (13) electrically connected to the switching element (11) and the circuit element group (12). Upon an identification resistor (Ri) and/or an identification capacitor (Ci) being electrically connected to the circuit element group (12) via the switching element (11), the controller (13) measures a determination time (T), which is different for each circuit board (10), based on the connected identification resistor (Ri) and/or the connected identification capacitor (Ci) and identifies the one circuit board (30) based on the measured determination time (T).

Abstract: A current output module includes a current output section configured to output a current, an AD conversion circuit configured to convert a detection voltage, which is a voltage according to the current output from the current output section, into a digital value, a controller configured to control a current output from the current output section on the basis of the digital value of the detection voltage output from the AD conversion circuit, and a reference voltage generator configured to generate a plurality of reference voltages. The controller includes a processor configured to cause the AD conversion circuit to convert each of the plurality of reference voltages into a digital value, and a corrector configured to calibrate the AD conversion circuit on the basis of each digital value obtained by conversion of the plurality of reference voltages.

Abstract: A booster circuit includes a boost converter configured to boost an input voltage and performs feedback control such that an output voltage becomes a set value on the basis of a voltage applied to a feedback terminal and an internal feedback reference voltage, a power supply unit configured to generate a reference voltage with a smaller error than the feedback reference voltage, and a control unit configured to compare a voltage corresponding to the output voltage of the boost converter with the reference voltage, and configured to output a control signal indicating a comparison result to the feedback terminal of the boost converter.

Abstract: The constitution includes a heater 2 used as current receiving element, a thyristor 3 placed in the current travelling route of the heater 2, a series connection circuit of a capacitor 4 and diode 5 for control power source connected parallel to the thyristor 3, a Zener diode 9 as a constant voltage element connected to the gate of the thyristor 3, and a control circuit 6 connected parallel to the capacitor 4, with its control terminal connected to the gate of the thyristor 3, whereby a specified control voltage determined by the Zener voltage of the Zener diode 9 is obtained at the first capacitor 4 by the control of the thyristor 3, so that the transformer for stepping down the supply voltage is not necessary.