Newland EM1300 Manuál stáhnout pdf (Strana 27)

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Page 18

Electrical Interface

Output Signals

A Sample Schematic of LED Circuit

Here is the LED circuit used in the evaluation board, EVK3000&1300.

R13

R14

100 K

DGND

GLED

R17

10R

DLED

DV3.3V

2N3906

A Sample Schematic of Beeper Circuit

Here is a beeper circuit used in the evaluation board, EVK3000&1300.

DGND

BUZ

100K

R11

10R

R10

10R

DV 5V

2SC1623

1N4148

Buzze r

2SC1623

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Newland EM1300 Manuál Strana 27