In a standard astable configuration of the 555 timer, we have two resistors R1 and R2. The capacitor charges through both resistors but only discharges through R2, consequently, the high interval is longer than the low interval.
I am having trouble understanding the purpose of R1 here, won't removing it make the charge and discharge times equal, effectively making it a 50% duty cycle?
I tried following this question, but the answers there is not comprehensive enough. Moreover, other resources I came across states that the resistor is essential and can't be removed. Other than changing the ratio between the low and high interval, why is R1 essential?