RMQ Series – Precision Linear Power Supplies


The RMQ Series Precision Linear Power Supplies provide pure linear regulated DC power with standard IEEE-488 (GPIB) interface in a unique Quarter-Rack Design, allowing the mounting of up to 4 RMQ Series units to provide a maximum power of 400 Watts in the optional 5.25” X 19” (3U) rack mount tray.

These units are ideally suited as Laboratory Power Supplies and in systems applications where very low noise and very low ripple are essential for critical performance measurements. They provide full rated voltage or current at any setting (without the need for derating) up to a maximum power of 100 Watts.

RMQ Series supplies are provided with front panel binding posts and rear connector for ease in output wiring. They also include remote sense in the rear connector for excellent regulation at the point of load. IEEE 488 (GPIB) interface using standard SCPI commands and optional LAN, RS485, and RS232 interface makes the RMQ Series an ideal  Programmable Precision Linear Power Supplies in mission critical measurements and applications.


RMQ6-9A0-6 V0-9 A0.01%0.1%0.01% or 1 mV0.1%
RMQ10-6A0-10 V0-6 A0.01%0.1%0.01% or 1 mV0.1%
RMQ20-3.3A0-20 V0-3.3 A0.01%0.1%0.01% or 2 mV0.1%
RMQ40-2.5A0-40 V0-2.5 A0.01%0.1%0.01% or 4 mV0.2%
RMQ60-0.9A0-60 V0-0.9 A0.01%0.1%0.01% or 4 mV0.2%
RMQ125-0.5A0-125 V0-0.5 A0.01%0.1%0.01% or 4 mV0.2%
RMQ200-0.4A0–200 V0-0.4 A0.01%0.1%0.01% or 4 mV0.2%
RMQ400-0.25A0-400 V0-0.25 A0.01%0.1%0.01% or 6 mV0.5%

Input:  115 VAC ±10%, 50/60 Hz Single Phase.
Optional:  220 VAC ±10%, 50/60 Hz Single Phase.

Output: See specific model in table. The output is floating and either side may be grounded.

Load Regulation: See specific model in table. Regulation is for a full load step.

Line Regulation: See specific model in table. Regulation is for a line change from within specified input voltage range.

Ripple: ≤1 mV RMS.

Response Time: The output  voltage is within regulation limits in less than 100 microseconds for a ½ load step. The output voltage will remain within regulation limits for input line step within specified voltage range.

Remote Sensing: Units provided with remote sense terminals at the rear for regulation at the point of load.

Remote Programming: All units are voltage programmable at approximately 1000 Ω / Volt except Model HWD400-0.5B which is programmable at 500 Ω / Volt.

Series / Parallel Operation: Two or more units may be operated in series. Two units with the same voltage and current may be operated in parallel.

Temp. Coef.: 0.02% / °C.

Stability: Better than 0.05%/8 hours at constant line, load and temperature after ½ hour warm up.

Operating Temperature: 0°C to +50°C at any combination of line, load and temperature without the need for external cooling.

Terminations: Circular connector is provided at the rear for
output, sensing and ground. 5 Way binding posts are provided on the front panel for output and ground. A 7’ 3-wire line cord is provided for AC Input.

Protection: The power supply is protected by a fuse in the input line. The unit is provided with OVP, OCP, CV to CC mode and CC to CV mode.

Panel Controls: Digital voltmeter, digital ammeter, 10 turn voltage control, 10 turn current control, pilot light, ON/OFF switch and five way binding posts. The voltage and current control are fully adjustable by means of 10 turn panel potentiometers.

Finish: The standard front panel and chassis finish is light blue. Chassis and cover are yellow-irridite.

Size: 5 ¼” H x 4⅛”  W x 20¼” D.
Four units can be mounted in a 5¼“ x 19” rack mount tray.



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* Multiple position shell polarization to insure connectors can be mated in only one possible orientation
** Optional mating connector.

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