outside enclosure

inside enclosure

4A Battery Charger for 12V SLA

110V/120V AC 60Hz or 220V/240V AC 50Hz

Output

120/240V AC 1

Charge Voltage

1

1

2

2

2

ground

120/240V AC

2

CONN4

5A FUSE

+12V

Output

1

1

12V DC

2

2

Input

1

2

ground

1

circuit board

2

Master Power Swtich

2

2 1

1

1

Mains Earth connections not shown. Mains Earth should be connected to enclosure and to Earth connections of PSU and Charger.

CONN2

1

2

1

CONN1

2

2

charge

1

2 12 DC 4.5A Regulated PSU

1

CONN3

5A FUSE Input

K2 1 3 2 4

U4

5

K1

6

4

7 8

1 5

2 3

1 2 3

OMRON G2R−14

OMRON LY2−0

D2 1N4148

D1 1N4148

Docking Station Contacts

3

3

Q1 2N3904

2

Q2 2N3904

2

1

1

R1

4K7

U2

4K7

+5V

D4

R2

1 2

220R

3 4 5

U3 1 2

Vout

6

Vcc

7

ground

8

3

9

Infrared Detector Module

U1

C2

RA2/AN2/VREF−

RA1/AN1

RA3/AN3/VREF+

RA0/AN0

RA4/AN4/T0CKI

RA7/OSC1/CLKI

RA5/MCLR/VPP

RA6/OSC2/CLKO

VSS RB0/INT RB1/SDI/SDA

1

PIC16F819 220R

VDD RB7/T1OSI/PGD RB6/T1OSO/T1CKI/PGC

RB2/SDO/CCP1

RB5/SS

RB3/CCP1/PGM

RB4/SCK/SCL

1

C1

7805 2

18 17 16

0.1uF

10uF

C2 near U1

Yellow

R3

2

Green D3

OUT IN GND

1

3

2

R4

15 14 13 12 11 10

DESIGNER’S NOTES K1 Contacts:

10A, 24VDC

K2

K2

Contacts: 10A, 240V AC

OMRON LY−SERIES SUPPORTS A MAX OPERATING VOLTAGE OF 250VAC

Coil: 12V, 30mA

Coil: 12V, 60mA

SPDT

DPDT

Docking Station

TITLE FILE: DATE PAGE

docking_station.sch

Copyright (C) 2003, Dafydd Walters

$Date: 2003/08/14 $ 1

OF

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$Revision: 1.4 $ Dafydd Walters