For to a greater extent than or less ability render applications it is desirable to alter the output voltage over a broad range. There are a position out of ways to command the output voltage of ability supplies that are designed to provide broad adjustment ranges. Remotely adjustable output voltages tin endure implemented past times using 1 of the next methods.
Variable Voltage Control
In this instance an external variable command voltage (e.g., 1-6V) is connected to the designated input of the ability supply, sometimes called the PV input. As the input command voltage is varied it volition drive the output voltage to alter inwards a fairly linear fashion over a broad arrive at (e.g., 20% to 120% of the nominal output voltage). For to a greater extent than or less applications this is a depression terms method of providing a programmable ability supply. Below are diagrams showing an instance of this type of remote voltage adjustment for Lambda’s HWS/PV together with SWS-L series of ability supplies.
Variable Resistive Control
Some ability supplies tin endure remotely adjusted via a variable resistive command (external potentiometer). This method has the payoff that an external voltage is non required since an internal Ref. voltage is provided past times the supply. As the resistance changes, it volition drive the output voltage to alter inwards a non-linear fashion over a broad arrive at (e.g., 20% to 120% of the nominal output voltage) every bit shown inwards the diagrams below (Lambda’s HWS/PV series). For to a greater extent than or less applications this is a depression terms method of providing a programmable ability supply.
Serial Digital Control
Programmable Power Supplies tin endure remotely controlled via a series digital port such every bit RS232 or RS485. Both the output voltage together with electrical flow tin endure controlled from goose egg to the maximum output ratings. In addition, warning signals from the supplies tin endure sent dorsum to the remote reckoner or controller via the same digital link. Programmable Power Supplies are to a greater extent than expensive than broad adjustable supplies mentioned above, but they convey a large array of local together with remote command features that are non constitute elsewhere. Lambda’s ZUP series is a expert instance of a feature-rich Programmable Power Supply.





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