Re: Think my fridge might be causing small power spikes?
Yep, that spark will inject the spike into the power line and it also generate an RF Radiate noise that travel through the AIR that can be easily be picked up by high impedance input circuits such as audio pre-amp input section of the amplifier.
Like I said, you need to check and see if there is any snubber network on the relay/switch for the controlling the compressor. Also best to reduce the noise at the noise source.
I doubt that cheaply made fridge will have any EMI filter in it. We had just spent $6000 for EMI test for one little product that has switching power supply and 16MHz Xtal for the processor.
Radiate noise will be harder to control due to wide bandwidth of the noise.
Yep, that spark will inject the spike into the power line and it also generate an RF Radiate noise that travel through the AIR that can be easily be picked up by high impedance input circuits such as audio pre-amp input section of the amplifier.
Like I said, you need to check and see if there is any snubber network on the relay/switch for the controlling the compressor. Also best to reduce the noise at the noise source.
I doubt that cheaply made fridge will have any EMI filter in it. We had just spent $6000 for EMI test for one little product that has switching power supply and 16MHz Xtal for the processor.
Radiate noise will be harder to control due to wide bandwidth of the noise.
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