I've got several Transistor Devices loads including a monster RBL-400-600-4000. The largest supply I have is a Lamda 13-200 switching power supply, but it requires 3-phase to get the full 200A output. It will run off 240v single phase with a reduced output. I also have a linear Sorenson 20-115 on the bench that I can run full tilt, but isn't anywhere close to the 600A I'd need to fully load the TDI. I have no ability to generate 400V at more than a few hundred milliamps either. I simply never entertained attempting to do a full calibration on it due to the insane V/I levels I'd need. My primary load on the bench is a TDI RBL488 100-120-800 which is a much more modern unit including a keyboard for direct entry of amps. Great unit for most everything I do. I also have a TDI RBL488 100-300-2000 that I need to get around to repairing. All 3 of these loads are modular and use up to 10 plug-in cards for the load section. The easiest way of developing the higher currents is to use car batteries which would easily crank out the 150A you'd need. 2 fully charged in series will get close to 4kW if you want to fully load it up. You'll also need pretty heavy cables to minimize the I/R drop across them. I've got a couple of chunks of 4/0 cable I scavenged off a CNC machine center that we scrapped at work hooked up to the 400-600-4000, and some smaller ones I salvaged off the same machine for the smaller 100-200-800 as well as the 2 large power supplies.
Also: Computer power supplies, some of them can deliver serious amperages (especially server grade ones, which can sometimes be found digging through IT junk/asking around IT people).
Dare you test it with a car battery? Or for the 48V experience, telecomms battery? :) Should do for calibration with the help of a clamp ammeter (don't forget you can 10x and 100x a clamp ammeter by putting a 10 or 100 turn coil around it with a smaller current!, this should help verify it).
16:27 is that just a ptouch label or something like a clear address avery label that you can you print from your computer? Any other strategies for lettering fixing on faceplates? Maybe redoing the entire silkscreen of an instrument? Anywho, video idea
A Ptouch label is exactly what it is. I have a Brother Ptouch 950N printer in the lab for numerous reasons. It is nice because it is a network label printer but it has access to all the fonts installed on the computer with the software. So FAR less limited then the stand alone labelers.
Thanks, been eyeing one of those for after I paint the tek 466 chassis, I can relabel the side holes for adjustment (Chan 1&2 Gain & Var Adj). For more complicated jobs, I was also thinking of hijacking the wife's cricut to do this, don't know how durable it would be, but the idea of scanning a faceplate and cutting a vinyl sheet with only the letters and using the transfer tape to lay it down would be useful for things like knob hash mark scales.
Dell PowerEdge M1000E Chassis PSU 3000W 'Titanium' 8V4DK, 08V4DK Up to 91%+ AC/DC conversion efficiency (2360W power supply) or up to 94%+ AC/DC conversion efficiency (2700W power supply) DPSE, which automatically engages the minimum number of supplies required to power a given configuration, maximizing power supply efficiency The following detail the PowerEdge M1000e chassis power supply capabilities: 2360W or 2700W maximum for each power supply (depending which PSU is chosen) 220VAC (single PSU runs 180V-260VAC) or 110VAC input (2700W power supply only) 50Hz or 60Hz input 14A minimum (2360W power supply) to 18A maximum input (2700W power supply, running at 1350W during 100V operation) 192A (Amps) @ +12VDC output (operational) 4.5A @ +12VDC output (standby) this will be the best option to test your load
I was thinking that was going to have a REALLY stout 12Vdc rail. I am guessing this is a 240 Vac only supply they most likely did not make a 120Vac version.
Disappointing really. I was hoping to find out about the failure modes for this type of load. I wonder if all the transistors still work, evenly dissapating the energy? I've seen a few old electroplating PS for sale cheap, but shipping costs make up for that. Build a LiFePO4 battery. Very affordable and can be used with a UPS for the lab.
I've got several Transistor Devices loads including a monster RBL-400-600-4000. The largest supply I have is a Lamda 13-200 switching power supply, but it requires 3-phase to get the full 200A output. It will run off 240v single phase with a reduced output. I also have a linear Sorenson 20-115 on the bench that I can run full tilt, but isn't anywhere close to the 600A I'd need to fully load the TDI. I have no ability to generate 400V at more than a few hundred milliamps either. I simply never entertained attempting to do a full calibration on it due to the insane V/I levels I'd need. My primary load on the bench is a TDI RBL488 100-120-800 which is a much more modern unit including a keyboard for direct entry of amps. Great unit for most everything I do. I also have a TDI RBL488 100-300-2000 that I need to get around to repairing. All 3 of these loads are modular and use up to 10 plug-in cards for the load section. The easiest way of developing the higher currents is to use car batteries which would easily crank out the 150A you'd need. 2 fully charged in series will get close to 4kW if you want to fully load it up. You'll also need pretty heavy cables to minimize the I/R drop across them. I've got a couple of chunks of 4/0 cable I scavenged off a CNC machine center that we scrapped at work hooked up to the 400-600-4000, and some smaller ones I salvaged off the same machine for the smaller 100-200-800 as well as the 2 large power supplies.
Also: Computer power supplies, some of them can deliver serious amperages (especially server grade ones, which can sometimes be found digging through IT junk/asking around IT people).
This is a lab device that well represents the concept of “overkill”.
Dare you test it with a car battery? Or for the 48V experience, telecomms battery? :) Should do for calibration with the help of a clamp ammeter (don't forget you can 10x and 100x a clamp ammeter by putting a 10 or 100 turn coil around it with a smaller current!, this should help verify it).
16:27 is that just a ptouch label or something like a clear address avery label that you can you print from your computer? Any other strategies for lettering fixing on faceplates? Maybe redoing the entire silkscreen of an instrument? Anywho, video idea
A Ptouch label is exactly what it is. I have a Brother Ptouch 950N printer in the lab for numerous reasons. It is nice because it is a network label printer but it has access to all the fonts installed on the computer with the software. So FAR less limited then the stand alone labelers.
Thanks, been eyeing one of those for after I paint the tek 466 chassis, I can relabel the side holes for adjustment (Chan 1&2 Gain & Var Adj). For more complicated jobs, I was also thinking of hijacking the wife's cricut to do this, don't know how durable it would be, but the idea of scanning a faceplate and cutting a vinyl sheet with only the letters and using the transfer tape to lay it down would be useful for things like knob hash mark scales.
Transistor Devices.... There's a name you don't see often. 👍
Love your videos! Keep it up :)
Dell PowerEdge M1000E Chassis PSU 3000W 'Titanium' 8V4DK, 08V4DK
Up to 91%+ AC/DC conversion efficiency (2360W power supply) or up to 94%+ AC/DC
conversion efficiency (2700W power supply)
DPSE, which automatically engages the minimum number of supplies required to power a given
configuration, maximizing power supply efficiency
The following detail the PowerEdge M1000e chassis power supply capabilities:
2360W or 2700W maximum for each power supply (depending which PSU is chosen)
220VAC (single PSU runs 180V-260VAC) or 110VAC input (2700W power supply only)
50Hz or 60Hz input
14A minimum (2360W power supply) to 18A maximum input (2700W power supply, running at
1350W during 100V operation)
192A (Amps) @ +12VDC output (operational)
4.5A @ +12VDC output (standby)
this will be the best option to test your load
note it will exceeds your load as its outputs 192A (Amps) @ +12VDC output (operational)
I was thinking that was going to have a REALLY stout 12Vdc rail. I am guessing this is a 240 Vac only supply they most likely did not make a 120Vac version.
Disappointing really. I was hoping to find out about the failure modes for this type of load. I wonder if all the transistors still work, evenly dissapating the energy?
I've seen a few old electroplating PS for sale cheap, but shipping costs make up for that. Build a LiFePO4 battery. Very affordable and can be used with a UPS for the lab.
A thermal camera is rapidly moving to the top of the list for analysis like this just don't have a good way to do thermal viewing yet.
Four car batteries in series.
Please demo how to use this 😅🎉
Sure need to get some REALLY heavy cable but more is on the way.
An arc welder would provide enough current