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- Newsgroups: sci.electronics
- Path: sparky!uunet!uunet.ca!imax!dave
- From: dave@imax.imax.com (Dave Martindale)
- Subject: Re: AC-Regulator exists(?) for 12VAC Halogen Lamp
- Message-ID: <1992Jul23.134805.979@imax.imax.com>
- Keywords: Halogen AC Regulator
- Organization: Imax Corporation, Mississauga Canada
- References: <u_banzai.711770434@mcl>
- Date: Thu, 23 Jul 1992 13:48:05 GMT
- Lines: 23
-
- u_banzai@mcl.ucsb.edu (Buckaroo Banzai) writes:
- >I have a 12VAC Halogen desk lamp that loves to flicker and dim a lot.
- >
- >I'm wondering if there's a capacitor/choke/coil combination or AC line
- >regulator for the low-voltage AC side.
-
- Do the rest of the lights in your house also flicker? If not, then your
- problem is a bad connection, and you don't need a regulator, you need
- to find the bad connection.
-
- Low-voltage halogen desk lamps typically use the arms that support
- the lamp as the current-carrying conductors as well. Wherever
- there is a "joint" in the support arms, the current is often carried
- by simple metal-to-metal contact, with no wire or carbon brush or
- anything else to ensure a good connection.
-
- By experiment, you may be able to determine which connection is bad,
- and clean some paint out of it, or bypass it with a wire, or something
- like that. On the other hand, I once had a cheap halogen desk lamp
- that flickered in the way you described, and I eventually returned it
- because I didn't think it was feasible to fix its contact problems.
-
- Dave
-