Ramsey UT5 Manual do Utilizador descarregar pdf (Página 10)

UT5 - 10

Consequently, it is wise to consult an electronics parts catalog or store for available capacitor values and do your

circuit designing around values that actually exist, whether a single capacitor or a capacitance created by series or

parallel combinations.

PLANNING THE TIMING BY FORMULA:

The timing can be calculated exactly by this formula:

TIME (in seconds) = 1.1 (C1 in farads) X R3 (in ohms)

and may also be expressed and worked in these ways:

TIME = 1.1 X C1 (in uf) X .000001 X R3 in ohms

TIME = 1.1 X C1 (in uf ) X 10-6 X R3 in ohms.

Run the following BASIC routine on any computer to explore R3 and C1 combinations quickly and easily:

10 PRINT "FIND FOR TIME [T], MICROFARADS [C] OR OHMS [R]?"

20 INPUT "ENTER SELECTION: "; X$

30 IF X$ = "T" THEN 100

40 IF X$ = "C" THEN 200

50 IF X$ = "R" THEN 300

100 INPUT "C1 in microfarads = ";C

110 INPUT "R3 in ohms = ";R

120 PRINT "TIME (seconds) ="; (1.1 *C*.000001)*R

130 PRINT

140 GOTO 10

200 INPUT "Desired TIME in seconds = "; T

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Sem comentários

Ramsey UT5 Manual do Utilizador Página 10