crapalanche
New Member
I've seen quite a few .22uF capacitors in power supplies, especially in things like printers, there generally are about two caps each. These are on 120 V AC, 60 Hz; they're rated for 250 volts.
I'm wondering what their purpose is. Several things lead me to think that they're definitely not being used for mains decoupling. Small size, fairly high reactance ~12057 Ω, etc.
Can someone shed some light on the use of these sorts of caps in power supplies?
I'm wondering what their purpose is. Several things lead me to think that they're definitely not being used for mains decoupling. Small size, fairly high reactance ~12057 Ω, etc.
Can someone shed some light on the use of these sorts of caps in power supplies?