Re: tape-O-matic

Brad Heuver wrote:

> From: "Brad Heuver" <bheuver@...>
>
> Thanks for the input so far. I have not yet put the power to the
> breaker, as I wanted to wait for advice, or the chance to borrow a
> scope, or some other indicator. The spindle does have a variable speed
> head. I don't recall what the name of the circuit that drives it is,
> however. I believe that all the servo motors run on DC, and there is a
> rotogenerator that makes it. This is a separate motor & generator
> combination that feeds the logic and control circuits with 5 and 12 V
> +/- DC. (I'm not sure that it feeds the servo's now that I think about
> it)

Gasp! A Motor-Generator set is bad enough for the Servo power
supply (I mean, like WW-II vintage) but to supply the logic power,
that's unheard of! Are you sure it is for logic power? Do you mean
there are TWO motor-generator sets, one for servo power, one for
logic power? (It just doesn't make sense for such a small load - why
not use a transformer?)

Are you sure this thing is a 1972 vintage control? How about 1962?

Jon