What capacitor is the c3 and c4 of this electronic ballast circuit board?
2A is 100V, and 3A is 1000V. A is 1.0, the previous number is 10, so 2A is going to be 1.0 times 10 squared is equal to 100V. In addition to A, the common letters are D (2.0), G (4.0), and J (6.3). With such small capacitors, resistance measurements show that the open circuit can be viewed as normal. If your multimeter has a capacity measuring function, you can measure the amount of electricity and the nominal value.
Measuring with multimeter resistance, as long as it is not short circuit, normal is normal. If help please accept, the mobile phone will click on the right corner satisfied, thank!!
From the photo, this is the polyester capacitor. 2A222j stands for 2.2 nF (2.2 nF = 0.0022 mu F), and pressure 100V. 3A223j says the capacity is 22nF (22nF = 0.022 mu F), and the pressure is 1000V. It is possible to measure the capacitance of the polyester by measuring the capacitance of other porcelain plates. Note the polyester capacitor in series with the lamp filament, which can easily break through the damage, causing the filament to be red but the lamp will not be able to initiate the fault.
