| 摘要 |
This control unit is used for control of semiconductor rectifier in reversing connection for power supply in direct current electromotor. It consists of the ignition impulse generator with two outputs of ignition impulses, each for one direction of the current flow of the armature of the direct current motor, whose signal input for unblocking the ignition impulses for one direction of current flow is connected to the first output of the switching logic circuit. The second input of the signals for unblocking the ignition impulses for reversed direction of current flow is brought on the second output of the switching logic circuit, whose adjusting input is connected to the summing amplifier output with the first input connected to the direct current voltage supply and with the second input connected to the output of the linear circuit with logically controlled transfer characteristics, whose analogue input is connected to the current regulator output, the first logical input to the first output of the switching logic circuit, the second logical input to the second output of the switching logic circuit and the third logical input to the output of the NAND circuit, whose first input is connected to the first output of the switching logic circuit and the second input is connected to the second output of the switching logic circuit.<IMAGE>
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