For some power provide purposes it's fascinating to vary the output voltage over a variety. There are a variety of the way to regulate the output voltage of power provides which can be designed to supply extensive adjustment ranges. Remotely adjustable output voltages may be applied through the use of one of many following strategies.
Variable Voltage Management
On this case an external variable management voltage (e.g., 1-6V) is related to the designated enter of the power provide, typically referred to as the PV enter. Because the enter management voltage is different it'll trigger the output voltage to vary in a reasonably linear style over a variety (e.g., 20% to 120% of the nominal output voltage). For some purposes this can be a low value methodology of offering a programmable power provide. Beneath are diagrams exhibiting an instance of this kind of distant voltage adjustment for Lambda’s HWS/PV and SWS-L sequence of power provides.
Variable Resistive Management
Some power provides may be remotely adjusted by way of a variable resistive management (external potentiometer). This methodology has the benefit that an external voltage just isn't required since an internal Ref. voltage is offered by the availability. Because the resistance modifications, it'll trigger the output voltage to vary in a non-linear style over a variety (e.g., 20% to 120% of the nominal output voltage) as proven within the diagrams beneath (Lambda’s HWS/PV sequence). For some purposes this can be a low value methodology of offering a programmable power provide.
Serial Digital Management
Programmable Power Supplies may be remotely managed by way of a serial digital port resembling RS232 or RS485. Each the output voltage and present may be managed from zero to the utmost output scores. As well as, alarm indicators from the provides may be despatched again to the distant laptop or controller by way of the identical digital hyperlink. Programmable Power Supplies are dearer than extensive adjustable provides talked about above, however they've a big array of native and distant management features that aren't discovered elsewhere. Lambda’s ZUP sequence is an effective instance of a feature-rich Programmable Power Provide.