About Op-Amp Astable Multivibrator Calculator
The Op-Amp Astable Multivibrator Calculator helps you calculate the feedback resistor (Rf) required to achieve a desired oscillation frequency, given the capacitor value, supply voltage (Vsat), and voltage divider resistors R1 and R2. It also calculates the upper and lower threshold voltages VUT and VLT.
Related circuits:
- Monostable Multivibrator using Transistors
- 555 Timer as Astable Multivibrator
Equations Used
\( f_o = \frac{1}{2R_F C \ln\!\left(\frac{-V_{sat}-V_{LT}}{+V_{sat}-V_{LT}}\right)} \)
\( V_{UT} = \frac{R_1 V_{sat}}{R_1+R_2} \)
\( V_{LT} = \frac{-R_1 V_{sat}}{R_1+R_2} \)
Thank you!