Hello,

Keep track of the prefix factors:

http://educypedia.karadimov.info/electronics/metrixprefix.htm

Bertus

 

frequency is in (Hz) and i said it already and both times unit are (m sec)
and the total time is (sec)

 

Hello,

Keep track of the prefix factors:

http://educypedia.karadimov.info/electronics/metrixprefix.htm

Bertus

i know them bro

 

Hello,

Why do you not use them in your calculations?

Bertus

 

if you mean the (R2) which is (20k=20000)
and (C1) is (680nf=680*10^-9) then i know what you mean

That also is not correct.
1) Where are your units?
2) Given a frequency of 50 Hz, what is the period? That is all the information your need to calculate it.

Just look at the units. What are the units of frequency? What are the units of period?

John

if you mean the (R2) which is (20k=20000)
and (C1) is (680nf=680*10^-9) then i know what you mean

 

Hello,

When R = 20K it is 20*10^3 or 20000 and not 2000.

Bertus

 

Hello,

Why do you not use them in your calculations?

Bertus

cause i wanted to make mathematical shortcut some how

 

Hello,

When R = 20K it is 20*10^3 or 20000 and not 2000.

Bertus

yes ,, sorry i know it
thanks

 

Hello,

So using the formula on the image:

What is TL?

Bertus

 

Hello,

So using the formula on the image:

What is TL?

Bertus

TL = 0.7 C R2
TL = 0.7*(680*10^-9)*20000
TL = 9.52*10^-3

 

As for my question in Post #20, if frequency (Hz) is in "cycles/second" and period is in "seconds/cycle", then given a frequency of 50 Hz, what is the period?

John

 

As for my question in Post #20, if frequency (Hz) is in "cycles/second" and period is in "seconds/cycle", then given a frequency of 50 Hz, what is the period?

John

Be more specific
TL or TH or T total ??

 

Hello,

TL = 0.7 C R2
TL = 0.7*(680*10^-9)*20000
TL = 9.52*10^-3

Yes and not the 9520 mS you gave in post #19.

Bertus

 

Hello,

What is the total period time for 50 Hz?
When you found that, you can subtract the 9.52 mS found from this total period time to find the TH.

Bertus

 

Hello,



Yes and not the 9520 mS you gave in post #19.

Bertus

So to be on the road then:
F=1/TH+TL
then TH=1/F+TL
TH = 1/50 Hz + 9.52*10^-3
TH = 0.029 sec ==> 29.5 mS
right ?

 

Be more specific
TL or TH or T total ??

Total! That is the "period," which I defined in #31.

Good luck.

John

 

Hello,

When f=1/T , the what is T if f = 50 Hz?

Bertus

 

Hello,

When f=1/T , the what is T if f = 50 Hz?

Bertus

T=1/f
T=1/50
T=0.02 sec ==> 20 mS

 

Total! That is the "period," which I defined in #31.

Good luck.

John

T=1/f
T=1/50
T=0.02 sec ==> 20 mS

 

Hello,

Yes.
If the total period is 20 mS and TL is 9.52 mS. What is TH then?

Bertus