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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: John Robertson Newsgroups: sci.electronics.repair Subject: Looking for data on 1980s CDS cells - VACTEK VT212/VT212L Date: Wed, 28 Aug 2024 17:19:57 -0700 Organization: A noiseless patient Spider Lines: 43 Message-ID: Reply-To: spam@flippers.com MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Thu, 29 Aug 2024 02:19:59 +0200 (CEST) Injection-Info: dont-email.me; posting-host="e1c2e6e1450d64eeb9e065ff4a6c991d"; logging-data="3863405"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+sKbgdreAJwNxZBMzS5zCYeXpPBZQuD5c=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:gF3PkY0wHVhyc+eUuk0qjxH+gtE= Content-Language: en-US, en-CA Bytes: 2613 I'm trying to find a modern CDS cells to replace these old timers (1982) from the 70s, I did find a catalogue page for these CDS cells, but the details are not as useful to me as perhaps they would be to someone handy with using CDS cells. The ratings are: VT212L - 6 R1, 5 R2 VT212 - 7.8 R1, 5 R2 R1 defined as 2fc resistance in K Ohms (tolerance +/- 33.3% @ 2850K Source R2 defined as min dark resistance (Megohms) in 5 sec. Having a heck of a time matching these to more modern cds such as carried by DK or Mouser. I tried the NSL-06S53, but its light resistance is too sensitive and nothing else on DK was better. Anyone have a VACTEK catalogue who could scan the pages that might help? I suspect that PerkinElmer bought out Vactek as they used similar part (VT200x) numbers as early as 2001 that I could find on web.archive.org, but that archive doesn't have the parts books captured. Bitsavers doesn't list it, nothing on ebay either... Why am I bothering? I have a rifle gallery (http://www.bonanzagallery.com/) that uses flash tubes in the rifles to trip the cds cells in the targets and there are around 70 cds cells. A number of them are failing so I want to replace them with something that will work reliably. Thanks as always for your time! John :-#)# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."