I am building a standard 555 astable pulse generation circuit:
I am aware that the mark and space qualities of the wave form are set by the relationship of R1, R2, and C1, as per these formulae:
Mark Time = 0.7 × (R1 + R2) × C
Space Time = 0.7 ×(R2) × C
Because "space time" includes "mark time", it isn't possible to use the above circuit to create an output that is space > mark.
My question: is it possible to create a space > mark output from a 555 circuit, and if so, how to do it? If it isn't possible, is there a similar circuit that will permit this sort of output?
Thanks in advance!
I am aware that the mark and space qualities of the wave form are set by the relationship of R1, R2, and C1, as per these formulae:
Mark Time = 0.7 × (R1 + R2) × C
Space Time = 0.7 ×(R2) × C
Because "space time" includes "mark time", it isn't possible to use the above circuit to create an output that is space > mark.
My question: is it possible to create a space > mark output from a 555 circuit, and if so, how to do it? If it isn't possible, is there a similar circuit that will permit this sort of output?
Thanks in advance!