BK Precision 1785B Programmable DC Power Supply

The BK Precision 1785B is a single-output programmable DC power supply designed for benchtop or rack-mount applications. It offers direct key-in entry for voltage and current selection via a rubber keypad, providing fast and accurate adjustments. The unit supports both constant voltage (CV) and constant current (CC) modes and features sixteen user-programmable preset outputs for saving frequently used settings. It also includes a controllable output on/off switch, low ripple and noise, and excellent temperature stability. The BK Precision 1785B comes with a serial interface for remote operation and control, with software and a serial interface cable included.

### Technical Specifications

**Model:** BK Precision 1785B

**Output Ratings (0 °C – 40 °C):**
* **Voltage:** 0 to 18 VDC
* **Current:** 0 to 5 A
* **Power:** Not explicitly stated in provided documentation, but can be inferred from Voltage x Current (18V * 5A = 90W). The short description mentions 1800W, but this is likely a typo or refers to a different model, as the detailed specifications for the 1785B consistently show 18V/5A.

**Regulation:**
* **Load Regulation (Voltage):** < 0.01% of output + 3 mV * **Load Regulation (Current):** < 0.1% of output + 3 mA * **Line Regulation (Voltage):** < 0.1% of output + 3 mV * **Line Regulation (Current):** < 0.1% of output + 2 mA**Performance:** * **Ripple (Voltage):** ≤ 1 mVrms / 3 mVpp (20 Hz - 20 MHz) * **Ripple (Current):** ≤ 5 mArms (20 Hz - 20 MHz) * **Temperature Coefficient:** 30 ppm/°C * **Settability Resolution:** 10 mV / 10 mA**AC Input:** * **Voltage:** 115 V / 220 VAC ± 10% * **Frequency:** 47 to 63 Hz * **Line Input (Specific):** 120VAC**Interfaces:** * **Communication:** Serial Interface (RS-232) * **Connector:** DB9 interface * **Included:** Serial interface cable and software * **Optional Adapters:** IT-E131B TTL to RS232 interface Kit, IT-E132B USB Interface Kit**Physical:** * **Dimensions (WxHxD):** 10 in. x 4.16 in. x 15 in. (255.7 mm x 105.7 mm x 382.7 mm) * **Weight:** 14 lbs (6.4 kg) * **Mounting:** Benchtop or Rack Mountable (Rack mount kit available separately: IT-E151)**Environmental:** * **Maximum Operating Temperature:** 40 °C * **Minimum Operating Temperature:** 0 °C**Common Features:** * Sixteen user programmable preset outputs * Controllable Output On/Off Switch * Closed case calibration * Excellent temperature stability**Included Accessories:** * User manual * Software Installation disk * Test report * Power line cord * USB to TTL serial converter (IT-E132B)Why Choose Aumictech for BK Precision 1785B? At Aumictech, we specialize in supplying high-performance DC power supplies. Whether you need precise voltage and current control, versatile programmability with preset outputs, or reliable performance with low ripple and noise, our team ensures the BK Precision 1785B delivers maximum performance for your application.