Hi AJT,
You couldn't have stored it in a safer place! What do we do once the manufacture and sale of larger power light bulbs has been halted?
Hi LKA,
A K200? I'll have to look around and find out about it. It appears as though it is using the NJW type devices, so that catches my interest right away.
-Chris
You couldn't have stored it in a safer place! What do we do once the manufacture and sale of larger power light bulbs has been halted?
Hi LKA,
A K200? I'll have to look around and find out about it. It appears as though it is using the NJW type devices, so that catches my interest right away.
-Chris
Prototype has been built (green, pcb v2.0), it works well, it's stable. White pcb is an improved version (I hope). Open loop thd is 0.05% (1k, 50W, 8ohm), with HEC 0.005%.
Attachments
In the US they will continue to sell decorator legacy light bulbs. That would include clear globes and special shaped filaments or globes.
Hi Kevin,
But doesn't that exclude the higher wattage lamps needed to allow a reasonable amount of energy when you have an amplifier ? I did read somewhere that appliance lamps (25 w) and similar will continue to be legal. They wanted to eliminate the 60 watt and up sizes. The floodlight world would be affected with this as LED lamps are far more costly than the garden variety floodlight.
-Chris
But doesn't that exclude the higher wattage lamps needed to allow a reasonable amount of energy when you have an amplifier ? I did read somewhere that appliance lamps (25 w) and similar will continue to be legal. They wanted to eliminate the 60 watt and up sizes. The floodlight world would be affected with this as LED lamps are far more costly than the garden variety floodlight.
-Chris
Is there a thread and or schematic? Looks good, Nice Work
no, there isn't yet, soon will be a web page
Beautiful , LKA !!
I like it when a plan works out.
(below 1-3) The new slewmaster V3 output stage with
a (leach) "spooky" amp running it.
V2 was real good (with a big extrusion). V3 will do well on a 3U or 5U.
38C inside , 45C outside (Hot here ! 35C+ ....
Output devices "spread out" really gets that heat dissipated. Under 1C/ or
1mv bias difference on any of the 10 outputs.
I like how the thermal math worked out nearly exact. The .4C/W HeatsinkUSA
rating came out to a 18C rise. With 45W total idle - I'm at exactly 38C.
OS
I like it when a plan works out.
(below 1-3) The new slewmaster V3 output stage with
a (leach) "spooky" amp running it.
V2 was real good (with a big extrusion). V3 will do well on a 3U or 5U.
38C inside , 45C outside (Hot here ! 35C+ ....
Output devices "spread out" really gets that heat dissipated. Under 1C/ or
1mv bias difference on any of the 10 outputs.
I like how the thermal math worked out nearly exact. The .4C/W HeatsinkUSA
rating came out to a 18C rise. With 45W total idle - I'm at exactly 38C.
OS
Attachments
Forum thread - I tried twice now (in my country), no one was much interested. First of all, I want to finish the whole amp and do some listening tests, then I'll see.
Hi LKA,
If you want to wait, that's fine. But if you look at most other threads, they chart the development from concept to final working design. The community is very helpful here. You should give them a chance. Don't be put off by a couple of folks who like to think they know everything, just ignore those people.
A thread is no charge, free. You are not going to be out anything for doing this. Some of the best help in the world hangs out here occasionally. They often will give you great advice just because they are nice people.
-Chris
If you want to wait, that's fine. But if you look at most other threads, they chart the development from concept to final working design. The community is very helpful here. You should give them a chance. Don't be put off by a couple of folks who like to think they know everything, just ignore those people.
A thread is no charge, free. You are not going to be out anything for doing this. Some of the best help in the world hangs out here occasionally. They often will give you great advice just because they are nice people.
-Chris
