Xref: utzoo misc.consumers.house:15689 sci.electronics:16507 Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!veritas!amdcad!brahms!phil From: phil@brahms.amd.com (Phil Ngai) Newsgroups: misc.consumers.house,sci.electronics Subject: Re: Low Voltage lighting (Was:Re: compact fluorescent fixtures) Message-ID: <1990Dec28.215103.1023@amd.com> Date: 28 Dec 90 21:51:03 GMT References: <9624@ncar.ucar.edu> <1990Dec20.201931.14289@amd.com> <9949@pasteur.Berkeley.EDU> Sender: usenet@amd.com (NNTP Posting) Organization: Advanced Micro Devices, Inc; Sunnyvale, CA Lines: 15 In article <9949@pasteur.Berkeley.EDU> charless@cory.Berkeley.EDU writes: |>The lamp has a power supply/transformer which takes 120 VAC |>and converts it to 12 V. (I don't know if it's really a | |This doesn't indicate whether it is SS or not. Transformers can have serious Ok, I took apart my Crest Low Voltage Halogen Track Light, which uses a GE MR-16 50 W bulb. It is solid state. There is a bridge rectifier followed by a smallish capacitor feeding a couple of power transistor looking devices (could be MOSFETs, I don't know) which drive a small transformer. Obviously they are using high frequency voltage conversion to reduce the size of the package, trading silicon for iron. -- Whatever happened to Global Warming? Could we have some Local Warming?