The important part is that if your original capacitor had one, you’ll need to replace it on the new capacitor. Most replacement start capacitors will not include a resistor. You can check the condition of the old one by checking the resistance value, or just replace it with a new one.
There is another way! Simply put, we can substitute the voltage dropping resistor directly with a capacitor. Using Fig 2 let's take a look at how this technique works. As the input AC current passes through the tube filaments it charges the capacitor, first in one direction then the other.
But the important thing to remember is the power rating of the resistor. To safely discharge the capacitor, the resistor must be rated for at least 2.5W of power dissipation. So, choose a 5W 1kΩ resistor, in this case, to be on the safe side. These high-power resistors are usually expensive.
Instead of ordering and wanting for a resistor with a value you need you can change the resistance of a resistor by using another resistor or many. By installing resistors in a parallel or series circuit you can change the value in Ohms. Parts: Here is a link to a resistor calculator. Step 1: Resistors in Parallel. Resistor in parallel:
Why the start capacitor has a resistor? The purpose of a start capacitor resistor is used to bleed off residual voltage in the capacitor after it has been disconnected from the circuit after motor start up. Not all start capacitors will use one, as there are other ways to accomplish this.
Put the resistor in place of the main power fuse. It is usually recommended to use a resistor that is 1 Watt and 500-1,000 Ohms. A higher impedance (Ohm value) will charge the capacitor more slowly and prevent damage. Connect the positive terminal of the capacitor to the resistor. Measure the voltage on the capacitor with a voltmeter.