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BK Precision® Switching DC Power Supplies
Feature-Rich Laboratory Grade Power Supplies with Variable Settings
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BK Precision® Switching DC Power Supplies
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These Switching DC Power Supplies by BK Precision® come in 3 models that are sure to cover the range of your DC power needs. Each unit features a small profile that may be stacked on your workspace for maximum efficiency. Safety is ensured by precise settings adjusted via rotary controls, a bright and easy-to-read LED display, as well as superior protection for all circuitry components. |
- Rotary control with bright, clear LED display facilitates precise voltage and current settings
- All functions undergo self-checks when the power supply is switched on, increasing safety by alerting the user to malfunctioning components
- Analog remote capability allows you to turn the unit on or off and control all settings remotely
- Small, lightweight form factor makes this unit easy to install and transport, and saves space at your workstation
- Built-in cooling fan keeps the unit at optimal operating temperature
- 5A front auxiliary output allows you to connect a low-current device without moving the unit to a new location
| BK-1685B | BK-1687B | BK-1688B | |
| 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 |
| 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) |
| PROPERTY | VALUE |
| Load (0-100% Load) | ≤ 50 mV |
| Line (90-132 VAC, 170-264 VAC Variation) | ≤ 20 mV |
| Load (10-90% Rated Voltage) | ≤ 100 mA |
| Line (90-132 VAC, 170-264 VAC Variation) | ≤ 50 mA |
| Ripple & Noise Voltage (rms) | ≤ 5 mV |
| Ripple & Noise Voltage (peak-peak) | ≤ 50 mV |
| Current Ripple & Noise (rms) | ≤ 30 mA |
| Voltage Meter | 3-Digit LED Display ± 0.2% + 3 counts |
| Current Meter | 3-Digit LED Display ± 0.2% + 3 counts |
| Transient Response Time (50-100% Load) | 1.5 ms |
| Power Factor Correction | > 0.95 at optimal load |
| Cooling Method | Thermostatically controlled fan from zero |
| 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 |
| 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 | 7.9" x 3.5" x 8.2" (200 x 90 x 208 mm) |
| Weight | 5.2 lbs (2.4 kg) |
| PART # | VARIABLE OUTPUT VOLTAGE |
VARIABLE OUTPUT CURRENT |
PRICE |
| BK-1685B | 1V to 60V | 0A to 5A | |
| BK-1687B | 1V to 36V | 0A to 10A | |
| BK-1688B | 1V to 18V | 0A to 20A | |
| Accessories | |||
| BK-TL-5A | Alligator Clip to Banana Plug Hook-up Set | ||
| BK-TLPS | Power Supply Test Leads Set | ||
MANUALS & USER GUIDES
- Switching DC Power Supplies - Data Sheet (PDF)
- Switching DC Power Supplies - Instruction Manual (PDF)
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