BK Precision 1690 Switching DC Power Supply

The BK Precision 1690 is a regulated digital DC power supply designed for continuous duty, offering a versatile power solution for various testing and development applications. It is particularly well-suited for applications that require stable, high-current DC power, such as substituting car batteries for servicing automotive electronics, powering high-fidelity audio equipment, or for use in telecommunications and amateur radio setups. The unit features dual digital displays for precise monitoring of voltage and current, alongside robust protection mechanisms to ensure reliability and longevity.

### Technical Specifications

**General Features**
* **Continuous Duty Operation:** Designed to provide maximum current output continuously without overheating.
* **High RFI Stability:** Incorporates extensive filtering for high immunity to Radio Frequency Interference (RFI), ensuring stable operation in environments with potential interference.
* **Overload Protection:** Features a current foldback circuit to protect the unit and connected equipment from overloads. An overload indicator illuminates when this protection is active.
* **Over Temperature Protection:** Equipped with circuitry that activates when the unit reaches a high temperature, reducing output voltage and current to a safe level.
* **Multiple DC Output Terminals:** Offers a variety of output connections for flexibility:
* Two pairs of 3A snap-in connectors (front panel).
* One pair of 28A screw-on output terminals (rear panel).
* **Variable Speed Cooling Fan:** The cooling fan speed adjusts based on the unit’s temperature for efficient thermal management.

**Electrical Specifications**
* **Output Voltage:** 1 VDC to 15 VDC (Variable).
* **Maximum Output Current:** 28A at 13.8VDC.
* Output current is proportional to output voltage; specific current ratings are available at various voltage points, for example: 20A at 12V, 12A at 14V, and 20A at 13.8V.
* **Line Regulation:** ≤ 0.8% (108-132VAC input), or specified as 5mV (±2% Load).
* **Load Regulation:** Specified as 50mV (0-100% Load).
* **Ripple and Noise:** ≤ 10mVrms, or specified as 5mVrms.
* **AC Input Voltage:** 110 VAC, 60 Hz (standard for Model 1690).
* Also available in a 220VAC version (Model 1690-220V).
* Power Requirements: 120/220 VAC ±10%, 50/60 Hz.
* **Power Consumption:** 400W (typical), 580W (maximum).

**Metering**
* **Display Type:** Digital LED displays for Voltage and Current.
* **Voltmeter Range:** 0-20V or 0-30V.
* **Ammeter Range:** 0-20A or 0-30A.
* **Meter Accuracy:** ±7% Full Scale (F.S.).
* An alternative specification for meter accuracy is ±(0.2% + 2 digits).

**Physical Specifications**
* **Dimensions:**
* 8.1 x 4.5 x 10.6 inches (205 x 115 x 270 mm)
* 9.84″ L x 9.84″ W x 5.50″ H (250mm x 250mm x 140mm)
* 9.84 x 5.5 x 8.86 inches (250 x 140 x 225 mm)
* **Weight:**
* 12.1 lbs (5.5 kg)
* 19.9 lbs (9 kg)
* 20 lbs (9.1 kg)
* **Operating Temperature:** 32˚ to 104˚F (0˚ to 40˚C), ≤ 85% Relative Humidity.
* **Storage Temperature:** 5˚ to 158˚F (-15˚ to 70˚C), ≤ 75% Relative Humidity.

### Why Choose Aumictech for BK Precision 1690?
At Aumictech, we specialize in supplying high-end B&K Precision power equipment. Whether you need a reliable DC power source for intricate electronic testing, robust power for product development, or stable current for laboratory research, our team ensures the BK Precision 1690 delivers maximum performance and precision for your critical applications.