BK Precision 1745A DC Power Supply

The BK Precision 1745A is a versatile single-channel linear DC power supply designed for demanding applications in electronics testing, design, and service. It offers a reliable and precise power output with excellent regulation and low ripple characteristics. The unit features dual, bright LED displays for continuous monitoring of output voltage and current, with selectable coarse and fine adjustments for both parameters. Its robust design includes comprehensive overload protection, including current limiting, reverse polarity, overvoltage, and short circuit protection, ensuring safe operation and longevity of connected equipment.

### Technical Specifications

**General**
* **Manufacturer:** BK Precision
* **Model:** 1745A
* **Series:** 1700
* **Product Type:** Digital DC Power Supply
* **Output Channels:** Single
* **Operating Principle:** Linear

**Electrical Specifications**
* **Input Voltage:** 120/220V AC ±10%, 50/60 Hz
* **Output Voltage:** 0 to 35 VDC
* Adjustable via coarse and fine controls
* **Output Current:** 0 to 10 A
* Adjustable via coarse and fine controls
* **Power Consumption:** 560 W
* **Constant Voltage (CV) Operation:**
* **Line Regulation:** ≤ 0.2% + 2 mV (for 108-132 V AC input)
* **Load Regulation:** ≤ 0.04% + 2 mV (from no-load to full-load)
* **Ripple and Noise:** ≤ 1 mVrms (typical)
* **Temperature Coefficient:** ≤ 300 ppm/°C
* **Recovery Time:** ≤ 100 μs (typical)
* **Constant Current (CC) Operation:**
* **Adjustable Current Limit:** 5% to 100% of full scale
* **Line Regulation:** ≤ 0.4% + 5 mA (for 108-132 V AC input)
* **Load Regulation:** ≤ 0.4% + 5 mA
* **Current Ripple:** ≤ 3 mArms (typical)

**Metering**
* **Type:** Dual 4-digit LED Displays
* **Voltage Meter:** Green LED display
* **Current Meter:** Red LED display
* **Voltage Meter Range:** 0 to 99.99 V (display resolution of 10mV)
* **Current Meter Range:** 0 to 9.999 A (display resolution of 10mA)
* **Accuracy (Voltmeter/Ammeter):** ±(0.7% + 9 digits)

**Protection Features**
* Current Limiting Protection
* Reverse Polarity Protection
* Over Voltage Protection
* Short Circuit Protection
* Fully Overload Protected

**Interfaces**
* **Output Terminals:**
* Positive (+) Terminal (Red)
* Negative (-) Terminal (Black)
* Ground (GND) Terminal
* **Line Voltage Conversion Switch:** 110/220V AC

**Physical Specifications**
* **Dimensions (H x W x D):** 5.7 in. x 10.5 in. x 15 in. (145 x 267 x 381 mm)
* **Weight:** 27 lbs (12.2 kg)
* **Mounting Type:** Surface Mount

**Environmental Specifications**
* **Operating Temperature:** 0 to 40°C (32 to 104°F) at <75% RH * **Storage Temperature:** -15 to 70°C (5 to 158°F) at <85% RH**Included Accessories** * Instruction Manual * Spare Fuse * Power Cord**Performance Features** * Operates continuously at full load without overheating * Pre-regulator design reduces internal power dissipation at low output voltages * Smooth and automatic crossover between Constant Voltage (CV) and Constant Current (CC) modes, indicated by LEDs * Output shorting button for setting current limit * Capability to connect two units in series for double voltage output (0-70 VDC) * Capability to connect two units in parallel for double current output (with suitable balancing resistors)### Why Choose Aumictech for BK Precision 1745A? At Aumictech, we specialize in supplying high-performance electronic test and measurement equipment. Whether your laboratory requires precise voltage and current control for sensitive circuit testing, your integration project demands robust and reliable power sources, or your enterprise procurement needs dependable, industry-standard instrumentation, our team ensures the BK Precision 1745A delivers maximum performance and value for your application.