Power Supply blowed a fuse
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I bought a BK Precision 1660A Triple Output DC Power Supply | eBay[^] off ebay for about the same price about 10 years ago. It had come out of a lab so no telling how old it was. Yesterday I'm working on a project, turned it on and the lights flashed for a uSec and damn no power. Took the fuse out and sure enough it had blowed. So who sells fuses anymore? Checked with the local home improvement stores in the 2 nearest towns and there is 1 fuse at one of the centers. Problem is that they don't update there inventory and I've spent whole days driving many miles because they said they had something but turns out they didn't actually have it. I ordered fuses off ebay but it probably is another issue, the service manual says that unless there is a more serious issue they don't blow fuses. I got a lot of use out of this power supply but it's probably time to put it to pasture. There are things that I didn't like about it so my SO offered to buy me a DP900 HIGH PERFORMANCE LINEAR DC POWER SUPPLIES | RIGOL[^] for my birthday. I'll probably try to repair the old one and keep for backup. Right now I've got a ton of projects and there's very little I can do without a power supply.
Give me coffee to change the things I can and wine for those I can n
Sweet supply, Mike! That SO is definitely a keeper! :-D Somewhere around here I've got a Heathkit 0-15V dual power supply I built in the 70s. If I ever find it, I wonder if it will still work?
Will Rogers never met me.
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Sweet supply, Mike! That SO is definitely a keeper! :-D Somewhere around here I've got a Heathkit 0-15V dual power supply I built in the 70s. If I ever find it, I wonder if it will still work?
Will Rogers never met me.
Yeah it's been a real work horse, I hate to replace it but it's time. Coincidently the one I had prior to this one was a R175921 Heathkit IP-2718 Tri-Power Variable Power Supply | eBay[^]. When I upgraded to the B&K I gave it to a friend of mine that was just getting into electronics. He's had it for 10 years and as far as I know it's still truckin. Back when they built stuff to last!
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
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I bought a BK Precision 1660A Triple Output DC Power Supply | eBay[^] off ebay for about the same price about 10 years ago. It had come out of a lab so no telling how old it was. Yesterday I'm working on a project, turned it on and the lights flashed for a uSec and damn no power. Took the fuse out and sure enough it had blowed. So who sells fuses anymore? Checked with the local home improvement stores in the 2 nearest towns and there is 1 fuse at one of the centers. Problem is that they don't update there inventory and I've spent whole days driving many miles because they said they had something but turns out they didn't actually have it. I ordered fuses off ebay but it probably is another issue, the service manual says that unless there is a more serious issue they don't blow fuses. I got a lot of use out of this power supply but it's probably time to put it to pasture. There are things that I didn't like about it so my SO offered to buy me a DP900 HIGH PERFORMANCE LINEAR DC POWER SUPPLIES | RIGOL[^] for my birthday. I'll probably try to repair the old one and keep for backup. Right now I've got a ton of projects and there's very little I can do without a power supply.
Give me coffee to change the things I can and wine for those I can n
I had a large 300w air blower go out recently. It seemed like a solid build, but then I noticed that there were a few lead wires that were aluminum. After running 24x365x a few years, the aluminum had oxidized away. I replaced the leads with a good copper wire and it fired back up.
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I had a large 300w air blower go out recently. It seemed like a solid build, but then I noticed that there were a few lead wires that were aluminum. After running 24x365x a few years, the aluminum had oxidized away. I replaced the leads with a good copper wire and it fired back up.
I think it was in the 70s they used to wire houses with aluminum and it was not good. When I did remodeling I would run across a house that was wired with aluminum, very rare now a-days.
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
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I think it was in the 70s they used to wire houses with aluminum and it was not good. When I did remodeling I would run across a house that was wired with aluminum, very rare now a-days.
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
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For electronics contacts - yes. Even if it is available, I doubt whether many of us can afford to wire their entire house with gold wiring. :omg:
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows. -- 6079 Smith W.
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I bought a BK Precision 1660A Triple Output DC Power Supply | eBay[^] off ebay for about the same price about 10 years ago. It had come out of a lab so no telling how old it was. Yesterday I'm working on a project, turned it on and the lights flashed for a uSec and damn no power. Took the fuse out and sure enough it had blowed. So who sells fuses anymore? Checked with the local home improvement stores in the 2 nearest towns and there is 1 fuse at one of the centers. Problem is that they don't update there inventory and I've spent whole days driving many miles because they said they had something but turns out they didn't actually have it. I ordered fuses off ebay but it probably is another issue, the service manual says that unless there is a more serious issue they don't blow fuses. I got a lot of use out of this power supply but it's probably time to put it to pasture. There are things that I didn't like about it so my SO offered to buy me a DP900 HIGH PERFORMANCE LINEAR DC POWER SUPPLIES | RIGOL[^] for my birthday. I'll probably try to repair the old one and keep for backup. Right now I've got a ton of projects and there's very little I can do without a power supply.
Give me coffee to change the things I can and wine for those I can n
I imagine, given the age and solidity of your supply, that the first thing after the fuse is a hefty transformer. Unfortunately if there is a short on the primary (or even secondary) then getting it rewound is going to cost more than your car. An alternative point of failure (and hopefully more probable) is the rectifier bridge(s) after the transformer. That should be a very cheap fix. Time to get the ohmmeter out!
So old that I did my first coding in octal via switches on a DEC PDP 8
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I imagine, given the age and solidity of your supply, that the first thing after the fuse is a hefty transformer. Unfortunately if there is a short on the primary (or even secondary) then getting it rewound is going to cost more than your car. An alternative point of failure (and hopefully more probable) is the rectifier bridge(s) after the transformer. That should be a very cheap fix. Time to get the ohmmeter out!
So old that I did my first coding in octal via switches on a DEC PDP 8
My mind immediately though "hmm, you could be onto something..." the danger if the transformer insulation is going is fix it in one place it will pop in another, a possibility I can't lay hands on the link but there was an eBay seller who had a lot of spares for Heath-Kit, Crown and others. Mind you the thing is 'To fix the fault that caused the fault'.
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You really get purity of sound when listening to the electric hum.
KeithBarrow.net[^] - It might not be very good, but at least it is free!
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I bought a BK Precision 1660A Triple Output DC Power Supply | eBay[^] off ebay for about the same price about 10 years ago. It had come out of a lab so no telling how old it was. Yesterday I'm working on a project, turned it on and the lights flashed for a uSec and damn no power. Took the fuse out and sure enough it had blowed. So who sells fuses anymore? Checked with the local home improvement stores in the 2 nearest towns and there is 1 fuse at one of the centers. Problem is that they don't update there inventory and I've spent whole days driving many miles because they said they had something but turns out they didn't actually have it. I ordered fuses off ebay but it probably is another issue, the service manual says that unless there is a more serious issue they don't blow fuses. I got a lot of use out of this power supply but it's probably time to put it to pasture. There are things that I didn't like about it so my SO offered to buy me a DP900 HIGH PERFORMANCE LINEAR DC POWER SUPPLIES | RIGOL[^] for my birthday. I'll probably try to repair the old one and keep for backup. Right now I've got a ton of projects and there's very little I can do without a power supply.
Give me coffee to change the things I can and wine for those I can n
This always comes in useful. Hope you get it sorted. After you get your new one :)
KeithBarrow.net[^] - It might not be very good, but at least it is free!
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This always comes in useful. Hope you get it sorted. After you get your new one :)
KeithBarrow.net[^] - It might not be very good, but at least it is free!
Shocking!
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows. -- 6079 Smith W.
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This always comes in useful. Hope you get it sorted. After you get your new one :)
KeithBarrow.net[^] - It might not be very good, but at least it is free!
I was thinking more along the lines of a small thermonuclear device. :)
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
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For electronics contacts - yes. Even if it is available, I doubt whether many of us can afford to wire their entire house with gold wiring. :omg:
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows. -- 6079 Smith W.
Actually, silver is the best conductor. But gold has the advantage of being more durable due to its high resistance to corrosion, tarnishing and oxidation. So for critical connections gold is the preferred conductor. Order of least resistive and most conductive Silver Copper Annealed Copper Gold Aluminum
"A little time, a little trouble, your better day" Badfinger
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I was thinking more along the lines of a small thermonuclear device. :)
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
I'd be happy to load you up some fuses, Mike, but primers are awfully expensive and rare right now.
Will Rogers never met me.
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I'd be happy to load you up some fuses, Mike, but primers are awfully expensive and rare right now.
Will Rogers never met me.
Damn regulations, stumps are awfully hard to get out by hand. :)
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
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Actually, silver is the best conductor. But gold has the advantage of being more durable due to its high resistance to corrosion, tarnishing and oxidation. So for critical connections gold is the preferred conductor. Order of least resistive and most conductive Silver Copper Annealed Copper Gold Aluminum
"A little time, a little trouble, your better day" Badfinger
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I bought a BK Precision 1660A Triple Output DC Power Supply | eBay[^] off ebay for about the same price about 10 years ago. It had come out of a lab so no telling how old it was. Yesterday I'm working on a project, turned it on and the lights flashed for a uSec and damn no power. Took the fuse out and sure enough it had blowed. So who sells fuses anymore? Checked with the local home improvement stores in the 2 nearest towns and there is 1 fuse at one of the centers. Problem is that they don't update there inventory and I've spent whole days driving many miles because they said they had something but turns out they didn't actually have it. I ordered fuses off ebay but it probably is another issue, the service manual says that unless there is a more serious issue they don't blow fuses. I got a lot of use out of this power supply but it's probably time to put it to pasture. There are things that I didn't like about it so my SO offered to buy me a DP900 HIGH PERFORMANCE LINEAR DC POWER SUPPLIES | RIGOL[^] for my birthday. I'll probably try to repair the old one and keep for backup. Right now I've got a ton of projects and there's very little I can do without a power supply.
Give me coffee to change the things I can and wine for those I can n
Fuses do actually degrade with age, especially if the're rated a bit near the running current. The inlet fuse will almost certainly be subject to many times its rated current for a short interval every time the PSU is powered up (due to charging up capacitors), and each time they'll warm up a bit and lose a bit more "life". Could be your fuse just got too old and tired.
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Fuses do actually degrade with age, especially if the're rated a bit near the running current. The inlet fuse will almost certainly be subject to many times its rated current for a short interval every time the PSU is powered up (due to charging up capacitors), and each time they'll warm up a bit and lose a bit more "life". Could be your fuse just got too old and tired.
We have a lot of power glitches here also. We live in a very small community way out in the country. We're so far out they have to pipe sun shine into us! :)
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
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I bought a BK Precision 1660A Triple Output DC Power Supply | eBay[^] off ebay for about the same price about 10 years ago. It had come out of a lab so no telling how old it was. Yesterday I'm working on a project, turned it on and the lights flashed for a uSec and damn no power. Took the fuse out and sure enough it had blowed. So who sells fuses anymore? Checked with the local home improvement stores in the 2 nearest towns and there is 1 fuse at one of the centers. Problem is that they don't update there inventory and I've spent whole days driving many miles because they said they had something but turns out they didn't actually have it. I ordered fuses off ebay but it probably is another issue, the service manual says that unless there is a more serious issue they don't blow fuses. I got a lot of use out of this power supply but it's probably time to put it to pasture. There are things that I didn't like about it so my SO offered to buy me a DP900 HIGH PERFORMANCE LINEAR DC POWER SUPPLIES | RIGOL[^] for my birthday. I'll probably try to repair the old one and keep for backup. Right now I've got a ton of projects and there's very little I can do without a power supply.
Give me coffee to change the things I can and wine for those I can n
Interesting. When I search digikey for "fuse", I get a lot of them. Filter on product status: active, mounting type: requires holder, fuse type: cartridge, glass and I got over 1600 hits. Most of them can be ordered as single, but some can only be ordered in quantity. Or, just Google "old car fuses" since cars used to use the same type. Have to keep this old equipment working. I hope it's just a problem with an old fuse for you and that the fuse blowing is not just a symptom of another issue.
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I think it was in the 70s they used to wire houses with aluminum and it was not good. When I did remodeling I would run across a house that was wired with aluminum, very rare now a-days.
Give me coffee to change the things I can and wine for those I can not! PartsBin an Electronics Part Organizer - An updated version available! JaxCoder.com Latest Article: Simon Says, A Child's Game
The AL wire wasn't the problem. The problems were not being aware of the importance of anti-corrosion measures (especially when joining Al and Cu) and the need to enforce a torque spec on all screw down connections. AL has always been used without problem for heavy gauge feeder lines, and if connected properly is perfectly safe for standard outlets and hard wired devices. The initial standards for using it with 15/20A circuits was just 🐘💩.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, weighing all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius
