4. Hundreds of sacrifices to the Flying Spaghetti Monster just because sacrificing them is fun. I will occasionally buy a bag just to blow up! Better entertainment than a Netflix sub.
Yep they are boat anchors. There is the 454 of course which was a bit of a break through. 150Mhz bandwidth in a portable scope in 1968 (!). I might hang out for one of the actually.
They are built like apollo space craft. Cast, machined, neatly wired, incredibly well documented, the lot. Gold plated everything. Designed to withstand drops!
Vertical amplifier
More pictures: http://www.helo.de/helo/tek/portable/454/454_e.htm
http://elektronikbasteln.pl7.de/reparatur-eines-tektronix-454-oszilloskop-150-mhz.html
I'm going to pass on that one. Don't fancy arguing with customs at the moment. I've had a stalemate with them for about a month now on a copy of the ARRL handbook which they think was 20% VAT. Thanks for the offer though.
Got my soldering iron stands this morning. The square black ash tray variety gets a 1/10 rating. It's floppier than a floppy thing from planet flop. The inflatable padding they used in the packaging was better. If anyone wants it, it's yours for £3 delivered! If it doesn't go by next Friday it's going in the recycling.
On to stand number two now. Better. After some head scratching I managed to extract the balance bar and bend it into a suitable position to hold a 9501 handle. the sponge that came with it was shit. Metal appears to be Chinesium. Once you've bent it, it stays though. 7/10 for that one. I'll try this one for a bit and see how it goes.
The current line up with the Weller for context. The Weller base actually weighs more than the other two setups entirely (10/10)
I'm going to trim up a weller sponge and see how I get on with the "kakko" stand.
The one with the knackered hfe I'd already had on a breadboard so it might have been slightly toasted or zenered.
Actually, this is probably the place to ask, since I've been poking around this unit long enough without figuring it out. I'm certain it's something simple and stupid I keep overlooking, but I'm going to start with a brief history.
When I received the unit over 10 years ago, it had been well-used and abused by Verisuck employees; when it failed pretty obviously one or more of the trained ape brigade had taken it apart and tried to fix it. the DC-DC converter had several of the stacked epoxy-sealed Sangamo caps on the +/- 8.6V rails had cooked themselves to death, as had the big 4700uF on the 5V rail. It had shorted one diode in the line voltage bridge, which I was able to find only two of, so I replaced both on the opposing sides of the same cycle on the bridge, then I replaced every cap in the 42V DC-DC converter and low voltage inverter sections. It came back to life, everything was happy, and I used it for ~3 years without issue. Then the HV multiplier/Flyback failed, and it went in storage, got lost in a move, sent in, sent back, queried, lost, found, subjected to public enquiry, lost again, and finally buried in soft peat forthree months* several years while I located a replacement and then I eventually dug it out a couple weeks ago.
First thing I noticed when I was troubleshooting the HV was that it now had a loud whine; I assumed it was T948 in the HV complaning since the flyback had failed so thought nothing of it. When I replaced the flyback it persisted, and while the 'scope did come up, it had errors in the POST. So once I determined that the fault was in the Acquisition RAM, but only on the highest speed mode, my niggling feeling that the POST errors and the new noise were related came back to mind. After poking around with an insulated screwdriver with handle held against my ear (very cautiously too, as this model has 2KV potential in the same area ), I isolated the noise not to T948 in the HV, but to T906 in the 42V DC-DC converter.
Oy vey. so my last few sessions have revolved around trying to isolate the source of the noise in the 42V DC-DC converter; so far, to no avail. Excessive noise floating on all DC rails except the +/- 8.6 rails (stacks of Sangamo 840uF caps) indicates to me that the problem must be somewhere in the converter; but even after removing all other caps and substituting, still no resolution.
Ideas? Cheers? Jeers? Something stupid you can see from a mile away?
I'm using the manual from Artek; it's better than the one hosted my the Tek affiliate. This site appears to have a decent copy that passed my virus scans.
I think I'm going to go to Harbor Freight for some retail therapy now...
mnem
* shamelessly snurched from HHGTG
I'm going to pass on that one. Don't fancy arguing with customs at the moment. I've had a stalemate with them for about a month now on a copy of the ARRL handbook which they think was 20% VAT. Thanks for the offer though.
Got my soldering iron stands this morning. The square black ash tray variety gets a 1/10 rating. It's floppier than a floppy thing from planet flop. The inflatable padding they used in the packaging was better. If anyone wants it, it's yours for £3 delivered! If it doesn't go by next Friday it's going in the recycling.
On to stand number two now. Better. After some head scratching I managed to extract the balance bar and bend it into a suitable position to hold a 9501 handle. the sponge that came with it was shit. Metal appears to be Chinesium. Once you've bent it, it stays though. 7/10 for that one. I'll try this one for a bit and see how it goes.
The current line up with the Weller for context. The Weller base actually weighs more than the other two setups entirely (10/10)
I'm going to trim up a weller sponge and see how I get on with the "kakko" stand.
I'm going to pass on that one. Don't fancy arguing with customs at the moment. I've had a stalemate with them for about a month now on a copy of the ARRL handbook which they think was 20% VAT. Thanks for the offer though.
Got my soldering iron stands this morning. The square black ash tray variety gets a 1/10 rating. It's floppier than a floppy thing from planet flop. The inflatable padding they used in the packaging was better. If anyone wants it, it's yours for £3 delivered! If it doesn't go by next Friday it's going in the recycling.
On to stand number two now. Better. After some head scratching I managed to extract the balance bar and bend it into a suitable position to hold a 9501 handle. the sponge that came with it was shit. Metal appears to be Chinesium. Once you've bent it, it stays though. 7/10 for that one. I'll try this one for a bit and see how it goes.
The current line up with the Weller for context. The Weller base actually weighs more than the other two setups entirely (10/10)
I'm going to trim up a weller sponge and see how I get on with the "kakko" stand.Was it a new copy of the book?
I checked Amazon again and these DPS5015 units are still being listed at £3.99 - 9 in stock (well, there were until I bought 5 of them, now there's only 4 )
https://www.amazon.co.uk/gp/product/B07433NF8F/ref=oh_aui_detailpage_o01_s01?ie=UTF8&psc=1.I ordered the last.Received the first one. Two more on the way.
(SNIP)
Ideas? Cheers? Jeers? Something stupid you can see from a mile away?
I'm using the manual from Artek; it's better than the one hosted my the Tek affiliate. This site appears to have a decent copy that passed my virus scans.
I think I'm going to go to Harbor Freight for some retail therapy now...
mnem
* shamelessly snurched from HHGTGLeave their free meters behind......
Mnem:
I'm going to pass on that one. Don't fancy arguing with customs at the moment. I've had a stalemate with them for about a month now on a copy of the ARRL handbook which they think was 20% VAT. Thanks for the offer though.
Got my soldering iron stands this morning. The square black ash tray variety gets a 1/10 rating. It's floppier than a floppy thing from planet flop. The inflatable padding they used in the packaging was better. If anyone wants it, it's yours for £3 delivered! If it doesn't go by next Friday it's going in the recycling.
On to stand number two now. Better. After some head scratching I managed to extract the balance bar and bend it into a suitable position to hold a 9501 handle. the sponge that came with it was shit. Metal appears to be Chinesium. Once you've bent it, it stays though. 7/10 for that one. I'll try this one for a bit and see how it goes.
The current line up with the Weller for context. The Weller base actually weighs more than the other two setups entirely (10/10)
I'm going to trim up a weller sponge and see how I get on with the "kakko" stand.
How many volts does it take to blow a 500v electro
Having beer and lots of nibbles in the late afternoon sun
Touch down, its here ...
Only the unit, printed manual and power cord only. No probe.
Books are zero rated. 0%.
Was £58 including delivery. Next thing I know it turns up with a £20 VAT and handling charge. RSGB have it in stock now for £50 as well
Actually, this is probably the place to ask, since I've been poking around this unit long enough without figuring it out. I'm certain it's something simple and stupid I keep overlooking, but I'm going to start with a brief history.
When I received the unit over 10 years ago, it had been well-used and abused by Verisuck employees; when it failed pretty obviously one or more of the trained ape brigade had taken it apart and tried to fix it. the DC-DC converter had several of the stacked epoxy-sealed Sangamo caps on the +/- 8.6V rails had cooked themselves to death, as had the big 4700uF on the 5V rail. It had shorted one diode in the line voltage bridge, which I was able to find only two of, so I replaced both on the opposing sides of the same cycle on the bridge, then I replaced every cap in the 42V DC-DC converter and low voltage inverter sections. It came back to life, everything was happy, and I used it for ~3 years without issue. Then the HV multiplier/Flyback failed, and it went in storage, got lost in a move, sent in, sent back, queried, lost, found, subjected to public enquiry, lost again, and finally buried in soft peat forthree months* several years while I located a replacement and then I eventually dug it out a couple weeks ago.
First thing I noticed when I was troubleshooting the HV was that it now had a loud whine; I assumed it was T948 in the HV complaning since the flyback had failed so thought nothing of it. When I replaced the flyback it persisted, and while the 'scope did come up, it had errors in the POST. So once I determined that the fault was in the Acquisition RAM, but only on the highest speed mode, my niggling feeling that the POST errors and the new noise were related came back to mind. After poking around with an insulated screwdriver with handle held against my ear (very cautiously too, as this model has 2KV potential in the same area ), I isolated the noise not to T948 in the HV, but to T906 in the 42V DC-DC converter.
Oy vey. so my last few sessions have revolved around trying to isolate the source of the noise in the 42V DC-DC converter; so far, to no avail. Excessive noise floating on all DC rails except the +/- 8.6 rails (stacks of Sangamo 840uF caps) indicates to me that the problem must be somewhere in the converter; but even after removing all other caps and substituting, still no resolution.
Ideas? Cheers? Jeers? Something stupid you can see from a mile away?
I'm using the manual from Artek; it's better than the one hosted my the Tek affiliate. This site appears to have a decent copy that passed my virus scans.
I think I'm going to go to Harbor Freight for some retail therapy now...
mnem
* shamelessly snurched from HHGTG
I'm going to pass on that one. Don't fancy arguing with customs at the moment. I've had a stalemate with them for about a month now on a copy of the ARRL handbook which they think was 20% VAT. Thanks for the offer though.
Got my soldering iron stands this morning. The square black ash tray variety gets a 1/10 rating. It's floppier than a floppy thing from planet flop. The inflatable padding they used in the packaging was better. If anyone wants it, it's yours for £3 delivered! If it doesn't go by next Friday it's going in the recycling.
On to stand number two now. Better. After some head scratching I managed to extract the balance bar and bend it into a suitable position to hold a 9501 handle. the sponge that came with it was shit. Metal appears to be Chinesium. Once you've bent it, it stays though. 7/10 for that one. I'll try this one for a bit and see how it goes.
The current line up with the Weller for context. The Weller base actually weighs more than the other two setups entirely (10/10)
I'm going to trim up a weller sponge and see how I get on with the "kakko" stand.
You should void the order with your credit card company and charge it back; tell them it was never delivered. Let the vendor hash it out with customs, as it was their choice of carrier which didn't know how to properly process a book to avoid this issue. I'm sick of incompetent carriers fu**ing up my life; I have 3 projects on hold because of USPS, FEDEX and UPS not knowing how to deliver even within the correct MONTH the order was supposed to be here.
Well apparently not. I have a stand sold by a company listing it as KSGER.
Turns out there are a couple of people in the feedback who's genuine Hakko handles don't fit in it either