DMS-EB-DC/DC

DC/DC Converter and Isolation Board for

DMS-30PC/LCD Meters

MPM_DMS-EB-DCDC.B01 Page 1 of 2

For full details go to

www.murata-ps.com/rohs

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Description: The DMS-EB-DC/DC Application Board provides isolated +5V power for

DATEL's DMS-30PC/LCD Series, 3½ Digit, LED/LCD Display, Digital Panel Voltmeters. This

add-on board is ideal for applications requiring isolation (up to 750V) between the input

signal and the meter's +5V supply.

Features: The DMS-EB-DC/DC is an excellent choice for dc ammeter applications.

These ammeters typically have the current shunt located on the positive side of the power

supply — a condition which usually exceeds the meter's common mode voltage limit.

Input-to-output isolation is required if the power source being measured also powers the

DMS-30. DATEL's new Panel Meter Catalog has a detailed application note on dc amme-

ters.

Applications: The DMS-EB-DC/DC incorporates all standard features of the DMS-EB

board; the only exception being the smaller allowable range of power supply voltage when

using the LM7805 3-terminal regulator. Use the DMS-EB-DC/DC with any DMS-30PC meter

or DMS-30LCD meter (5V-powered models only).

+7.5-18V Operation (Optional): Open SG4 and install U2 (LM7805CT) with its metal

tab adjacent to U1. Applications requiring a lower dropout voltage should consider the

LM2931T-5. Exceeding the

allowable regulator input voltage

ranges (see Functional Specifica-

tions) will cause device over-

heating! As is the case when

specifying any electronic power

component, be sure to consult all

applicable manufacturer's data

sheets.

FEATURES

Provide isolated +5V power for DMS-30 Series meters

750V minimum isolation

Ideal for high-side dc ammeters shunts

Provisions for +12V operation

Includes all the features of the standard DMS-EB board

Use with all DMS-30PC and DMS-30LCD

(5V models only)

–25 to +60°C operating temperature range

　

Ordering Information

Functional Specifications

DMS-EB-DC/DC

DC/DC converter board (with mating connector)

DMS-BZL1

Bezel assembly

DMS-BZL2

Bezel assembly with sealing gasket

RN-DMS

Resistor accessory kit

Input Voltage

+5V (±5%)

Input Current:

Typical

+150mA

Maximum

+250mA

Regulator Input Voltage Range

(LM7805CT):

DMS-30PC-X-XS

+7.5 to +9.5Vdc

DMS-30PC-X-RL

+7.5 to +18Vdc

DMS-30LCD-X-5(B)

+7.5 to +18Vdc

Output Voltage

+5V (±5%)

Isolation

750V, minimum

Operating Temperature

0 to +60°C

Storage Temperature

– 20 to +75°C

Dimensions:

2.02" (51.31mm)L

0.83" (21.08mm)W

Humidity (Non-condensing)

0 to 95%

R3

R1

R2

R5

R4

U2

SG10

SG11 SG9 SG8 SG7

C3

SG14

SG6 SG5

C4

C1

J1

SG4

SG3 SG1

SG2

C4

1

SG12

12

12

34

5

6

U1

R6