www.elektronik.si

[Silvo]

V marčevski številki elekorja je objavljen zanimiv frekvencmeter. Skoraj nujen instrument domače delavnice katerega se da narediti za malo denarja. Projet sicer ni free zato tukaj ne morem objavljati preskana. Na povezavi na elektorjevo stran pa najdete predlogo tiv ter HEX za mikrokontroler. Tisti, ki elektorja nima ter mu je projekt zanimiv pa predlagam, da si ga sposodi v knjižnici ali se znajde kako drugače.

Še partlist: (copy/paste z elektorjeve)

Multifunction Frequency Meter
030136-1
COMPONENTS LIST
Resistors:
R1,R23 = 33kOhm
R2,R10,R13 = 1kOhm 8
R3,R12,R15,R40-R47 = 150Ohm
R4-R8 = 1kOhm 5
R9,R17 = 100kOhm
R11,R18 = 68kOhm
R14,R30-R37 = 3kOhm 3
R16 = 22Ohm Ohm
R19,R21 = 8kOhm 2
R20 = 10kOhm
R22 = 1MOhm
P1 = 10 kOhm preset H (with spindle, see text)
Capacitors:
C1 = 10µ F 25V radial (optionally tantalum)
C3 = 10µ F 16V radial (optionally tantalum)
C2,C4,C5,C6 = 100nF
C7-C10 = .47µ F 16V radial optionally tantalum)
C11,C12 = 22pF
C13,C14 = 10µ F 16V radial optionally tantalum) (only if required)
Semiconductors:
D1 = 1N4001
D2,D3 = zener diode 5V6, 500 mW
D4 = zener diode 4V7, 500 mW
D5,D6 = BAT46
T1-T8 = BC327-25
IC1 = AT90S2313-10PC, programmed, order code 030136-41
IC2 = 74HCT42 or 74HC42
IC3 = LM393 (8-pi DIP)
IC4 = 7805
Miscellaneous:
JP1 = 3-way jumper
JP2-JP5 = 2-way jumper
K1 = 2-way PCB terminal bock, lead pitch 5mm
K2,K2A = 14-way SIL pinheader
S1 = pushbutton, 1 make contact (small model)
S2 = BCD switch (16 positions)
X1 = 10MHz quartz crystal
LD1-8 = SA52-11SRWA (Kingbright)
IC sockets: 6-way, 8-way, 16-way, 20-way
Heatsink for IC4 (U25, 30K/W)
PCB, order code 030136-1
Disk, project software, order code 030136-11 or Free Download

[castro]

Je morda kdo zasledil, kakšen je merilni obseg?

LP, Andrej

[Silvo]

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