bobp
17-08-2011, 15:21
Whenever I encounter a problem in Hi-Fi world that requires serious outlay of money, I try to find solution in real world where the economy of scale kicks in.
Power regulation for non-audio circuits seems to be one such field. The issues we encounter with powering up Technics motor are trivial when compared with lab, military and other sensitive real-life applications.
Imagine working in a remote area with unstable AC voltage and you operate sensitive military equipment needing reliable 21DC supply. Would your first line of defense be the audiophile-grade cottage industry solution or milspec grade off the shelf equipment?
21V DC in our case is needed to operate motor, not audio circuits. I started digging and found one from the real world that can be used to drive Technics.
Nemco-Lambda PS-10-24 or PS-11-24.
Output can be set to 21DC and provides more than ample current (3.0A and 5.0A respectively)
Input voltage is 85-132V.
Price varies from $20 (surplus) to around $120(new).
I guess that Lambda is head and shoulders ahead of using stock 1200 PSU
in external case.
But I wonder how Lambda compares to cottage industry models costing 10-20x more.
Never heard anyone mention it and I find it rather odd. Best kept secret
or there is another reason for it?
Power regulation for non-audio circuits seems to be one such field. The issues we encounter with powering up Technics motor are trivial when compared with lab, military and other sensitive real-life applications.
Imagine working in a remote area with unstable AC voltage and you operate sensitive military equipment needing reliable 21DC supply. Would your first line of defense be the audiophile-grade cottage industry solution or milspec grade off the shelf equipment?
21V DC in our case is needed to operate motor, not audio circuits. I started digging and found one from the real world that can be used to drive Technics.
Nemco-Lambda PS-10-24 or PS-11-24.
Output can be set to 21DC and provides more than ample current (3.0A and 5.0A respectively)
Input voltage is 85-132V.
Price varies from $20 (surplus) to around $120(new).
I guess that Lambda is head and shoulders ahead of using stock 1200 PSU
in external case.
But I wonder how Lambda compares to cottage industry models costing 10-20x more.
Never heard anyone mention it and I find it rather odd. Best kept secret
or there is another reason for it?