Digital AC constant-current source
An AC constant current source, digital technology, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problems of wasting human resources and insufficient accuracy, so as to improve the control accuracy, automatically control the current size, and save energy. human effect
Inactive Publication Date: 2003-12-31
SHENYANG SIASUN ROBOT & AUTOMATION
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Problems solved by technology
[0002] At present, most of the constant current devices are widely used as manual AC constant current adjustment equipment. Usually, an autovoltage regulator is used, and a digital display instrument is installed on the load. It is necessary to manually adjust the voltage to control its output current. This will not only It is a waste of human resources, and its adjustment accuracy and adjustment time are greatly affected by human factors, and the accuracy is not enough
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0018] Such as figure 1 As shown, it is composed of a primary regulator T1, a secondary regulator T2, an output transformer T3, a voltage sensor S1, a current sensor S2, a first motor M1, a second motor M2 and a controller. The first motor The terminals of M1 and the second motor M2 are respectively connected to the microcontroller D1 in the control circuit, and their output shafts are in mechanical contact with the carbon brushes at the taps of the primary and secondary regulators T1 and T2 respectively, and the two ends of the primary regulator T1 are adjusted It is the input terminal, its tap is connected to one end of the secondary regulating voltage regulator T2, and connected to the voltage sensor S1, the other end of the secondary regulating voltage regulator T2 is connected in series with the inductance coil L1 to the ground, the tap of the secondary ...
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The digital AC constant-current source in two-stage voltage and current regulation mode has regulating amount from the controller. Its structure includes primary voltage regulator, secondary voltage regulator, output transformer, voltage sensor, current sensor, the first motor and the second motor, and the controller. The first motor and the second motor have wiring terminal connected with monochip computer in the controller circuit separately and output shaftcontacted to the carbon brush in the contact of the primary voltage regulator and the secondary voltage regulator separately. The primary voltage regulator has two ends as input ends and tap connected to the secondary voltage regulator and the voltage sensor; the secondary voltage regulator has its other end connected to an earthed inductance coil and its tap connected to the primary of the output transformer via a switch; and the output transformer has secondary connected to load resistor via a current sensor. The present invention can regulate output current automatically.
Description
technical field [0001] The invention relates to a constant current device, in particular to a digital AC constant current source which can automatically adjust the output of AC current. Background technique [0002] At present, most of the constant current devices are widely used as manual AC constant current adjustment equipment. Usually, an autovoltage regulator is used, and a digital display instrument is installed on the load. It is necessary to manually adjust the voltage to control its output current. This will not only Human resources are wasted, and its adjustment accuracy and adjustment time are greatly affected by human factors, and the accuracy is not enough. Contents of the invention [0003] In order to overcome the above disadvantages, the present invention provides a digital AC constant current source, which can automatically control the magnitude of the current and keep it constant or make appropriate adjustments as required. [0004] In order to achieve t...
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Inventor 张辉宋克威王玉山
Owner SHENYANG SIASUN ROBOT & AUTOMATION