NJU9214FG1 Просмотр технического описания (PDF) - Japan Radio Corporation

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NJU9214FG1

4•3/4 DIGIT SINGLE CHIP DIGITAL MULTIMETER LSI

Japan Radio Corporation  

NJU9214

(3) Example of the Latching Relay Driver Circuit

RD1 to RD4 are normally " H ". ( Active " L " )

GND

COM

10A

DCV, ACV,

, , Ω, CAP,

DCmA, ACmA,

FRQ, rpm, ADP

SW1

,,

Ω,CAP

33k

33k

100kΩ

PTC 500Ω

100

SW2

DCmA,

ACmA

ACV,ACmA,

FRQ,rpm

SW7

others

SW5

0.1uF

0.022uF

SW3

1k

10k

100k

others 1M

DC400mV,ADP 10M

100k

VDDA

SW7

VSSA

Rectifier Circuit

Block

SGND2

SGND1

AGND

IVSH

IVSL

ADP

OVX

OVH

VR7

VR6

VR5

VR4

VR3

VR2

VI

ACOUT

RMSIN

RD1 RD2 RD3 RD4

SW Changing coil of latching relay

VDDD

RESET

SW1 SET

RMS-DC Converter

Power source SW

1kΩ×14

VDDD

SW2

SW3

Sw4 and SW8 is used

SW4

into the rectifier circuit

block shown in the

SW5

Example of application

circuit.

SW8

SW7

VSSD 74HC138

74HC138

VDDD

VDDD

VSSD

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