[QuadList] Variacs and awakening gear from long naps (was Gotmy VR 1200's)

[Don Norwood]

One of the major design differences between RCA and Ampex quads of the 
VR1200/2000 and TR-70 era is the approach they take with power supplies. 
RCA has several large supplies which run everything.  Ampex has smaller, 
individual supplies for most of the various systems in the machine.  Which 
approach is better is a subject for some discussion, but when it comes to 
bringing up an old machine on a Variac, almost any size can be used with the 
Ampex machines since you can easily control what sections are powered.  For 
that matter, since all the subsystems (Amtec/Colortec/Velcomp/Audio/etc) are 
separate, you can plug them into variacs individually, or when you have them 
out of the machine for cleaning.

One caution.....DO NOT power on the signal system and servo supplies without 
load.  They are shunt regulators and will dissipate all of the power in an 
unpleasant manner...........

Don