Monday, September 16, 2013
One of the reasons York Aircond making noise
This is an experience using York air conditioner, after more than 2 years installed it started to make noise. At first the noise was soft and random, but after sometimes it becoming louder and quite often. I've called the technician to check and fix it, they found out that the rubber bushing is wearing out due to heat produce by the running motor. It becomes harden and no longer functioning as it should, so the solution is just replace it. That should solve the problem.
The rubber bushing is look like this: Rubber bushings used on typical york compressor bracket where it holds the compressor with 4 bolts to the bracket.
One simple circuit to step up voltage using LM2577 -Adj P+ chip. The schematic is from Texas Instrument and it works expected - and below is...