| Electronics > Beginners |
| HP 6115A Good Price? |
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| hifiguy99:
First time poster here. I have an opportunity to pick up two HP 6115A PS for about $300 USD locally. Good condition, missing a few housing pieces here and there, some scratches and scuffs, but otherwise clean. I don't need the second one either so I could resell that if need be. I was just wondering if these PSs are good units to begin with since I will be working with audio amplifiers soon and a clean precision power supply would be quite helpful. What do you guys think? |
| Stray Electron:
$300 for 2! I can pick up good clean and COMPLETE precision PSs like that for about $40 on E-bay and for about $10 locally. HP builds GOOD stuff but I would EXPECT to find bad caps in something that old. Any of HP, Harrison or Lambda PSs should be more than adequate for what you're doing. HP, Harrison and Lambda supplies usually don't bring much money on E-greed due to their weight and the high shipping costs. My advice is to look on E-bay for any in your area and bid low on them and then go pick them up in person to avoid the shipping costs. I buy a lot of them from a local surplus outfit and I'm usually the only bidder and all of their auctions start at $9.95 so that usually all I pay for them. Depending on the seller, 80% of the old HP, Harrison and Lambda supplies that I buy all work perfectly. Unless you NEED one of the Precision PSs, I would avoid them, they're more delicate and failure prone than the standard supplies and they're more complicated to repair and also require high precision parts. I think you'll be pleasantly surprised at the stability and accuracy of the standard HP and similar high quality supplies even the 30 and 40 year old ones. PS FWIW the HP 6115A came out in about 1972 so the ones that you're looking at have probably been around for a while. |
| hifiguy99:
--- Quote from: Stray Electron on June 20, 2018, 02:31:54 pm --- $300 for 2! I can pick up good clean and COMPLETE precision PSs like that for about $40 on E-bay and for about $10 locally. HP builds GOOD stuff but I would EXPECT to find bad caps in something that old. Any of HP, Harrison or Lambda PSs should be more than adequate for what you're doing. HP, Harrison and Lambda supplies usually don't bring much money on E-greed due to their weight and the high shipping costs. My advice is to look on E-bay for any in your area and bid low on them and then go pick them up in person to avoid the shipping costs. I buy a lot of them from a local surplus outfit and I'm usually the only bidder and all of their auctions start at $9.95 so that usually all I pay for them. Depending on the seller, 80% of the old HP, Harrison and Lambda supplies that I buy all work perfectly. Unless you NEED one of the Precision PSs, I would avoid them, they're more delicate and failure prone than the standard supplies and they're more complicated to repair and also require high precision parts. I think you'll be pleasantly surprised at the stability and accuracy of the standard HP and similar high quality supplies even the 30 and 40 year old ones. PS FWIW the HP 6115A came out in about 1972 so the ones that you're looking at have probably been around for a while. --- End quote --- What do you suggest as a precision low ripple/noise PS then? Everything on e-bay is overpriced. Live in the northern Illinois area and everything is overpriced around here. Now that you say it, that HP power supply is a bit overpriced, but I have seen people pay $100-$200 for a good unit. |
| Old Printer:
Depending on your needs, I have picked up three of these under the BK Precision 1651 label on ebay and never paid more than $60 with shipping. The ITT tech school bankruptcy sale a few years ago put a ton of these on the market. The TEK unit is the same with a different color scheme as I was able to get the TEK service manual and schematics to fix one of them. The user manual is here: https://www.tek.com/cps250-manual/cps250-user-manual |
| Stray Electron:
--- Quote from: hifiguy99 on June 20, 2018, 03:09:29 pm --- What do you suggest as a precision low ripple/noise PS then? Everything on e-bay is overpriced. Live in the northern Illinois area and everything is overpriced around here. Now that you say it, that HP power supply is a bit overpriced, but I have seen people pay $100-$200 for a good unit. --- End quote --- Have you even looked at the prices for the HP 6115A meter in the Completed auctions on E-bay? One sold for $10, another for $100, another for LESS THAN $89 and another for LESS THAN $50. The first three were all listed as "used" and "pre-owned" so should be fully functional per E-bay's rules. Real world prices are far less than the two for $300 that you were quoted. Stop using the ridiculous asking prices prices in the for sale section of Ebay for any kind of accurate value. "What do you suggest as a precision low ripple/noise PS then?" What kind of voltage and current range do you realistically need? And what ripple requirements? For audio work, I suspect that most lab grade HP power supplies will work. I just searched for "HP Power Supply" in the for sale section of E-bay and I got over 10 pages (probably MANY more) of hits with 200 hits per page so that's at least 2000 listings and that doesn't include the other GOOD brands like Harrison, Lambda, Precision Power Source, etc. "Everything on e-bay is overpriced. " Not everything, many sellers start their items at $9.95. Try sorting the search results by cheapest first and ignore the clueless sellers with their ridiculously high asking prices. You can also limit the results by the distance from your zip code if you intend to pick it up in person. |
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