FrMaLeV

Dijital Saat devreleri

Otolar İçin Dijital Saat






















MALZEME LİSTESİ


1 98 x 253 x 3mm red Perspex sheet

1 display mask, 98 x 253mm

1 12VDC 450mA plugpack

1 25mm PC-mount male power socket

1 4MHz crystal (X1)

4 569mm common cathode HE red 7-segment displays (Jaycar ZD-1850, LED Technology D23C4RRR141, Farnell 622-618 or equivalent) (DISP1-DISP4)

2 127-142mm common cathode HE red 7-segment displays (LTS543R or equivalent) (DISP5,DISP6)

4 AA NiCd or NiMH cells with solder tags

2 click-action momentary push-on switches (S1,S2)

1 LDR (Jaycar RD-3485 or equivalent) (LDR1)

1 20-pin DIL IC socket for mounting DISP5 & DISP6

1 18-pin DIL IC socket for IC1

3 16-pin DIL sockets for 8-way pin headers

1 14-pin DIL socket for mounting S1 & S2

3 8-way pin headers

1 2-way pin header

1 shorting plug for 2-way header

4 15mm M3 tapped standoffs

4 M3 x 6mm screws

4 M3 x 10mm countersunk
screws

2 blackened 4G self-tapping screws

8 PC stakes

1 1m length of 08mm tinned copper wire

Semiconductors

1 PIC16F84AP or PIC16F84P microcontroller programmed with clockhex (IC1)

1 4051 8-way analog multiplexer (IC2)

1 ULN2003A Darlington transistor driver (IC3)

1 7905 -5V 3-terminal regulator (REG1)

8 BC328 PNP transistors
(Q1-Q

1 15V 1W zener diode (ZD1)

4 1N4004 1A diodes (D1-D4)

2 1N914, 1N4148 switching diodes (D5,D6)

Capacitors

1 100mF 25VW PC electrolytic

5 10mF 16VW PC electrolytic

1 01mF MKT polyester

1 0015mF MKT polyester

2 27pF NPO ceramic

Resistors (025W, 1%)

1 470kW 7 220W

1 10kW 1 180W

1 47kW 7 82W

1 22kW 1 10W

1 1kW 1 22W 1W 5%

9 470W

Miscellaneous

Wooden case: 9mm MDF 100 x 235mm, 3mm MDF 98 x 253mm, picture frame hooks

Metal Case: 1mm aluminium
347 x 192mm, 4 x 6mm tapped spacers