Is it possible to get 2 frequency using a 555 IC

[sagarspm]

IC 555

I am using IC 555 in astable mode. The output frequency is 100Hz. Using same circuit i want to get output of having frequency 50Hz. Is it possible to get 2 frequency using 1 IC 555. The circuit is attached with. At input 1 I am getting output frequency of 100 Hz. Now if my INPUT 2 come i should get output frequency of 50Hz.
Can anyone help me.

Sagar

 

[IanP]

Consider a small relay that when activated by the 50Hz signal will add another capacitor in parallel with C5 .. see attached picture ..
Another option is using similar relay change the value of R18 ..
Any of the above options can be used to select/change frequency from 50Hz to 100Hz or the other way around ..

Rgds,
IanP
:|

 

[sagarspm]

Dear IanP,

Thanks a lot for your help. I really appreciate.

Thanks again.

Sagar

 

[ap123]

wow wat an cool answer by ianp ...i was thinking of changing resistance value .