How do you calculate the frequency of an astable circuit?


if using timer ic 555 can calculated in following way.
f= 1.44/((ra+2rb)*c)
f= 1.44/((1+2*68)*10*10^3*10^-6)
f= 0.0105*10^2
f= 1.05[hz]

http://www.redrok.com/timer_lmc555.pdf

page5 , page6.

the first resistor 1k ohms, second 68k ohms , capacitor 10 microfarads. want know how work out answer not answer itself.
thanks,
~will


Science & Mathematics Engineering Next



Comments

Post a Comment

Popular posts from this blog

Connections Academy...?

trying go connections academy because of bullying has been going on since second grade. have created presentation, sent multiple emails, printed handouts , packets, , have had family come on discuss issue well....however, mom doesn't focus on initiative taking of information up. completely, 100% against connections academy because feels isn't normal school kids attend , if don't go high school, won't have "high school experience." understand many of disagree persistence on topic. however, bullying hurtful when in situation in , have bad anxiety backfiring.... unfortunately, mom feels private or charter school better option don't think eliminate bullying, many teenagers relatively bullying regardless. instead of allowing me attend connections academy, mom wants other options find insulting , unnecessary because can fixed through online school instead of dealing problem other people causing. example, mom researching physiologists, anti-...
Read more

SOMEONE WITH COMPUTER KNOWLEDGE PLEASE HELP ME!?

own old imac (5 yrs old) brought 3 new sims games costing me £90.00 im extreemly annoyed, because each disc has been rejected , come out circular deep scractes , can promise brand new.i love apple think if bring in disc's re-fund me. started happening today, make sure put disc in straight every time. disapointed! do? can fix this? , discs! i own old imac (5 yrs old) brought 3 new sims games costing me £90.00 im extreemly annoyed, because each disc has been rejected , come out circular deep scractes , can promise brand new.i love apple think if bring in disc's re-fund me.... Computers & Internet Hardware Other - Hardware Next
Read more

Is there any website which would tell the history if we provide the second name or surname?

http://www.surnamedb.com/ these websites commercial businesses , lots of information taken pinch of salt...that stretch truth, names words , words come languages...so country spoke or influenced langauge, name have come from............ surname taken/given, choice first names now, expect find people called peter had exact same history , came same place....no silly...same surnames http://familytimeline.webs.com/originsof... if provide second name or surname have information place , origin , little other information useful. if know websites kindly provide them Arts & Humanities Genealogy Next
Read more