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Switching DC Power Supplies

Models 1685B, 1687B & 1688B

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80619

Specifications

Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ± 5 °C.

M odel s

16 85 B

16 87B

1 68 8B

Out put

Variable Output Voltage

1 – 60 V

1 – 36 V

1 – 18 V

Variable Output Current

0 – 5 A

0 – 10 A

0 – 20 A

Vol tage Regulatio n

Load (0-100% Load)

≤ 50 mV

Line (90-132 VAC, 170-264 VAC Variation)

≤ 20 mV

Curren t Regulati on

Load (10-90% Rated Voltage)

≤ 100 mA

Line (90-132 VAC, 170-264 VAC Variation)

≤ 50 mA

Ri ppl e & Noi se

Ripple & Noise Voltage (rms)

≤ 5 mV

Ripple & Noise Voltage (peak-peak)

≤ 50 mV

Current Ripple & Noise (rms)

≤ 30 mA

Me ter Type & Accuracy

Voltage Meter

3-Digit LED Display ± 0.2% + 3 counts

Current Meter

3-Digit LED Display ± 0.2% + 3 counts

Othe r

Input Voltage

100-240 VAC 50/60 Hz

Full Load Input Current

3.7 A (100 VAC)

1.7 A (230 VAC)

4.6 A (100 VAC)

2.1 A (230 VAC)

4.6 A (100 VAC)

2.1 A (230 VAC)

Efficiency

82% (100 VAC)

86% (230 VAC)

82% (100 VAC)

86% (230 VAC)

81% (100 VAC)

85% (230 VAC)

Switching Frequency

100 – 120 kHz

Tracking Overvoltage Protections

O/P 1-5 V: set voltage +2 V

O/P 5-20 V: set voltage +3 V

O/P 20-60 V: set voltage +4 V

O/P 1-5 V: set voltage +2 V

O/P 5-20 V: set voltage +3 V

O/P 20-36 V: set voltage +4 V

O/P 1-5 V: set voltage +2 V

O/P 5-18 V: set voltage +3 V

Transient Response Time (50-100% Load)

1.5 ms

Power Factor Correction

> 0.95 at optimal load

Cooling Method

Thermostatically controlled fan from zero to full speed

Protections

Overload, Overvoltage, Overtemperature

Special Features

3 User-Defined Voltage and Current Presets, Analog Remote Control

External Timed Programming

Max. 20 voltage and current steps

Max. 99 min + 59 sec step time

Max. 999 running cycles

Gen eral

Operating Temperature

32 °F to 104 °F (0 °C to 40 °C) ≤ 80% R.H.

Storage Temperature

5 °F to 158 °F (-15 °C to 70 °C) ≤ 85% R.H.

Dimensions (WxHxD)

7.9” x 3.5” x 8.2” (200 x 90 x 208 mm)

Weight

5.2 lbs (2.4 kg)

Two Year Warranty

Supplied accessories

Power cord, instruction manual, USB cable, remote control connector