Skip to Main Content
Newnes Circuit Calculations Pocket Book
book

Newnes Circuit Calculations Pocket Book

by Thomas J. Davies
April 2016
Intermediate to advanced content levelIntermediate to advanced
384 pages
12h 56m
English
Newnes
Content preview from Newnes Circuit Calculations Pocket Book
The a.c. voltage 95
70 INPUT "ENTER PERIODIC TIME IN MICROSECONDS" : US
80 LET T=US/(10-6)
90 LET F=l/T
100 PRINT "FREQUENCY = " F "HERTZ"
Example 12 Twenty cycles of a voltage sine wave occur in 100 ms.
Calculate the frequency.
100
Periodic time of 1 cycle = = 5 ms
3
20
1 5 1000
/ = - = i + = = 200 Hz
3
t 1000 5
(See program 61, above.)
Alternative method.
100
20 cycles occur in 100 ms =- = 0.1 s
3
10
3
1
In 1 s number of cycles = x 20 = 200 Hz
3
0.1
Example 13 A two-pole a.c. generator is running at 300 rev/min.
Calculate the frequency of the voltage generated and the periodic
time.
300
300 rev/min = = 5 rev/s = 5 Hz
60
1 1 1 x 1000
/
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Power Supplies for LED Driving, 2nd Edition

Power Supplies for LED Driving, 2nd Edition

Steve Winder

Publisher Resources

ISBN: 9781483101132