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The only problem is: You can't get 1.5u It come as 1u or 2u2
R1=22K
R2=1Mohms
C=1.5uF
f=1.44/(R1+2*R2)*C
Can i use this formula for calculating frequency of 1 Hz?
Here is shematic:
**broken link removed**
I simulate that shematic in link above in multisim 11 with R1=22kΩ, R2=11kΩ, C1=1,5uF i get f≈1Hz
But when i put that values in formula it dosent fit...with formula f=21 Hz
Formula is incorrect or what ?
Do i need to use this C2=1uF ?
In this simulation i think i get f≈1Hz coz LED turn off and on every 1 sec isnt that rigth ?
Ok ill use that formula for calculating values. Thx alot ericgibbs
But if f=1Hz and if i put LED at output of Ne555 it should blink 1 time every sec right ?
If f=1Hz then i get 1 impuls per sec