A full-wave bridge rectifier uses diodes to convert the negative portion of alternating current, called AC, to positive. This creates an approximation of direct current, called DC, that can be used by electronic devices. Because AC current comes out of household outlets, rectifiers are required for most electronic devices. By pairing a capacitor with a full-wave rectifier, the current produced by the rectifier is filtered into a cleaner version of DC that is more effective and efficient. Choosing the correct capacitor requires calculating the total amount of capacitance, expressed in microfarards, that the capacitor needs. Writer Bio

How to Choose a Rectifier Capacitor - 96