How does the capacity of the capacitor influence the time the astable multivibrator stays is in one or other state?

Take the shown circuit into consideration. You have replaced the
capacitor **C1** by a capacitor with a
**capacity of 100 μF**.

The multivibrator remains **significantly**
longer in one of the two states.

In fact you can calculate the **switching times T _{1}** and

T_{1} = R_{2}C_{1} × 0.693

T_{2} = R_{3}C_{2} × 0.693

(Want to know where this formula comes from? See
**Experiment 25**.)

Put the values into the formula to get...

T_{1} = 47,000 Ω × 0.0001 F × 0.693 = ca. 3.3 sec.

T_{2} = 47,000 Ω × 0.00001 F × 0.693 = ca. 0.3 sec.

From the formula you can see that the resistors
**R2** and **R3** influence the switching time.
However, you are **not free** to choose any resistance value.
This you investigate in **Experiment 26**.

In the next experiment, you change the astable multivibrator a little bit...