CC Operation

Programming for CC operation is straightforward. Program each output to the desired voltage limit point. Then program each output to supply half of the total desired operating current. Both outputs will operate in CC mode. Note that the total desired current cannot exceed the combined current capability of both outputs. Figures 4-11 and 4-12 are examples of parallel configurations. These configurations apply to both CV and CC operating modes. Note the sense lead connections.

10 ASSIGN @Ps TO 705

20 INPUT "ENTER VOLTAGE LIMIT'',V

30 INPUT "ENTER OPERATING CURRENT",Oc

40 C = Oc/2

50 OUTPUT @Ps;"CLR;VSET1,'';V;";ISET1,";C;";VSET2,";V;";ISET2,";C

60 END

LINE 10: Assigns the I/O pathname to the power supply.

LINE 20,30: Enter the voltage limit and operating current.

LINE 40: Divides the total current requirement by 2.

LINE 50: Clears the supply and sets each output to supply half of the desired operating current at any voltage up to the desired voltage limit.

CV Operation

For CV operation, one output must operate in CC mode and the other output must operate in CV mode. The output that is operating in CV mode will be controlling the voltage regulation of both outputs.

In the example that follows, outputs 1 and 2 (both 40 W or 80 W Low V channels) will be operating in parallel with output 1 in CV mode and output 2 in CC mode at output voltages above 2.5 V. Each is programmed to one half of the desired current limit point. Above 2.5 V, the voltage for output 2 is always programmed higher than that of output 1 to ensure that output 2 operates in the CC mode. Note that any current from output 2 that is not required by the load flows into the downprogrammer of output 1 and is reflected in the current readback of output 1. The total current supplied to the load can be read back by adding the results of reading back the currents of outputs 1 and 2. At 2.5 V and below, the outputs are set to the same voltage and the operating modes depend upon the load.

10 ASSIGN @Ps to 705

20 INPUT "ENTER OPERATING VOLTAGE",V1

30 INPUT "ENTER TOTAL CURRENT LIMIT",Ilim

40 C = Ilim/2

50IF V1 > 7 THEN V2 = 20.2

60IF V1< =7 THEN V2=7.07

70IF Vl < = 2.5 THEN V2 = V1

80OUTPUT @Ps;"CLR;ISET1,";C;";VSET1,";V1

90OUTPUT @Ps;''ISET2,";C;"VSET2,";V2

100WAIT 1

110OUTPUT @Ps;"VOUT?1"

120ENTER @Ps;Vout

130OUTPUT @Ps;"IOUT?1''

140ENTER @Ps;Ioutl

150OUTPUT @Ps;"IOUT?2"

160ENTER @Ps;Iout2

170PRINT "OUTPUT VOLTAGE IS ";Vout

180PRINT "TOTAL OUTPUT CURRENT IS ";Ioutl + Iout2

190END

Programming with a Series 200/300 Computer103

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HP 6624A, 6623A, 6621A manual Input Enter Voltage LIMIT,V, Input Enter Operating VOLTAGE,V1
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6624A, 6621A, 6623A specifications

The HP 6623A, 6621A, and 6624A are precision DC power supplies widely recognized for their reliability and performance in various laboratory and industrial applications. These models are part of HP's 662X series, designed to cater to the needs of engineers, researchers, and technicians who require accurate power sources for their testing and development activities.

The main features of the HP 6623A, 6621A, and 6624A include their high stability, low ripple, and excellent load regulation, ensuring that the output voltage and current remain stable during testing. The power supplies provide multiple output channels, allowing users to power multiple devices simultaneously. The flexibility in setting voltage and current levels makes these models ideal for a wide range of applications, including semiconductor testing, device characterization, and system integration.

One of the standout technologies in the HP 662X series is the use of smart design techniques that minimize noise and enhance output performance. These power supplies incorporate advanced feedback mechanisms to maintain steady output, even under varying load conditions. Additionally, they feature programmable outputs, which means users can adjust the output levels through a connected computer or control system, streamlining the testing process and improving efficiency.

The HP 6623A model offers three independent outputs, with total power capabilities of 40 watts. It includes a 0-20V output, which can deliver up to 2A of current, along with two additional outputs that are adjustable. The 6621A provides a single output option, delivering a maximum of 20V and 2A, making it well-suited for simple applications where a single power source is required. In contrast, the HP 6624A stands out with its four independent output channels, providing a total of 60 watts, making it the most versatile of the three models.

Characteristics of these power supplies include user-friendly interfaces, allowing for easy configuration and monitoring of settings. LED indicators provide real-time feedback on voltage and current levels, enabling users to quickly assess the performance of their tests. Moreover, built-in protection features safeguard both the power supply and the connected devices from overvoltage and overcurrent conditions.

Overall, the HP 6623A, 6621A, and 6624A power supplies embody advanced engineering and design, making them invaluable tools for professionals looking for high-quality, reliable power sources for their electronic testing needs.
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