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6114A power supply initial price (sorry, slightly OT) - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: 6114A power supply initial price (sorry, slightly OT) (/thread-168524.html) |
6114A power supply initial price (sorry, slightly OT) - Marc Ferrer (France) - 06-11-2010 Hello, Last year I put hands on a venerable hp6114A power supply at no cost. To my delightment, it was perfectly working. Within days it was cleaned, and I even found a service manual ^^ It found a quiet home in my little lab, and a question arose : how much dit it cost 30 years ago ? I'd be happy if someone could answer. Considering how well built and designed it is, I suppose it wasn't a cheap item. It helped me doing funny things, amongst them rebuilding a little bit of the technology lying in the HP 9100 : based on the "green machine" patent, I successfully built a BCD counter, then I devised a 7-segment decoder.... just for fun ! Now I wish I have enough time to build a clock, but that's another (OT) story...
Cheers, Re: 6114A power supply initial price (sorry, slightly OT) - Vieira, Luiz C. (Brazil) - 06-11-2010 Hi; I have an HP 1978 Electronic Instruments and Systems Catalog and the 6114A (DC-Power Supply) is listed US$830,00 at page 638. Opt. 009 (10-turn control) is listed US$35,00 and Opt. 015 (decadial C Contr) is listed R$85,00. I have some other HP catalogs, not all in a series, up until 1991. Hope this helps. Cheers. Luiz (Brazil)
Edited: 11 June 2010, 1:56 p.m.
Re: 6114A power supply initial price (sorry, slightly OT) - Marc Ferrer (France) - 06-11-2010 Hi Luiz, Thanks a lot for your answer, I've been enjoying reading your posts for a long time. I expected a high price, but not to such an extent -and mine has the 015 option. Needless to say, it was just for information, I don't plan to make money with it. Besides that, maybe some of you will ask why I'm doing strange things like rebuilding some of the 70's technology stuff ?
- it's funny, I like it. And in our days of billion-transistor processors, I think it's a good thing to remember these times when you had to get the most of what you had -so few hardware. These constraints led engineers to produce masterpieces which still work. I consider it a duty to preserve all that, because behind well-done and well-thought items, one always discover great men. Thomas E. Osborne is one of them, IMHO. Just my 2 cents, and... Thanks again, Luiz !
Regards, Re: 6114A power supply initial price (sorry, slightly OT) - Vieira, Luiz C. (Brazil) - 06-11-2010 Hi, Marc; First of all, mercy! Quote:What else could I ask for? 8^) Thank you! I appreciate. Next, I cannot tell you how much I agree with you. All the way! I have complete collections of 70´s and 80´s Brazilian magazines and some foreign literature I red that time, and now I treasure them all so much. Technology of that time is the very foundation of what we have today. I am building some stuff myself, and the project I'm dealing with right now is a 10Hz-1MHz frequency meter with scratch stuff. So far I have a partially working prototype with: six LED digits, seven segment;Join to these a time reference (Xtal-based) and an input equalizer/squarer (I´ll use an MC10116 line driver configured as a programmable Schmitt-trigger) and we have a complete frequency meter with hold and event-counting possibilities. I was able to generate all multiplexing and control signals from the two CD4017, so the frequency meter needs only the guys up here. Actually I tested it with the power line -60Hz- as clock reference and it worked well. I just need to provide a stable power supply and a custom PCB layout. Will post the pictures soon. BTW, have you checked my photobucket album for Electronics and the other one for HP calculators? Please, be my guest! I think I gave my students some hope about Electronics because there's a group very interested on a summer course in Electronics and hardware, preferably in this very July. As soon as I have news I'll post about. Cheers.
Luiz (Brazil) Edited: 11 June 2010, 5:05 p.m.
Re: 6114A power supply initial price (sorry, slightly OT) - Marc Ferrer (France) - 06-12-2010 Hello Luiz, It's always good finding people sharing same points of view and hobbies :-) I wish you good luck for your frequency meter, hoping it'll soon work. Nice project, your design is clever ! (from what I guess given the parts list) It reminds me of a TTL-based stopwatch I built many years ago -it was in my young years, when I already collected electronics magazines (didn't understand everything by then) which I consider now as a treasure -just like you do. This morning I took a look at your photobucket albums, the HP side is impressive; I'd love to have as much time as you : I've got many machines (HPs, TIs, mechanical ones) waiting for restoration. The other side brought me straight back to the times I dismantled every out-of-service electronic item I could grab; the kid I was had as much fun doing this as playing with Lego... I'm happy that you spark interest in electronics by your students, teaching is such a noble task... and speaking about kids (they're already students, aren't they ?) : my 13-year old daughter masters the soldering iron an impressive way ! Eh eh Keep up the good work !
Regards, |