[QuadList] TCR 100 Logic

[Trevor Brown]

The capstan up/down motors in the ACR's are Chrysler window up/down motors.
I don't remember the model or year.

 

Sort of related (in a car parts sort of way.not in a Quad way), Bosch
telecine's used the same lights as Volkswagons for the front panels.and you
could probably buy the parts from an auto parts dealer for a 10th the price
of the manufacturer.

 

John Walko

 

Bosch were famous for this if they once put a unit together all their
products used the same part, one of the field engineers tells the story of a
Capstan motor going down in a remote part of Africa on a BCN51 and he bought
a Bosch lawnmower in a garden shop which used the same motor, so he fitted
it and it worked. I did wonder how he knew which model Lawnmower to buy, but
I guess as he worked for Bosch..

 

The circuits were the same, if they designed a synch separator, then every
time you came to a sync separator it was the same design same print layout,
does not matter if it was a VT, Telecine, or Camera,

They never re-invented the wheel

 

 

They also made a cart machine BCN 100 three one inch decks so fairly boring

 

The TC100 was a multi stage mechanical thread with bike chains and a pinch
roller less, wrap around capstan, each stage signaled its completion to a
DTL logic system by micro switches.

 

The DTL logic was arranged on 200 PCB's 5 chips per PCB and about 5 gates
per chip   DTL uses wired OR gates so you can interconnect several gate
outputs and if anyone goes low it will pull the others low

Ie OR function. This is hard to troubleshoot if you have an erroneous low as
you cannot identify which gate is faulty.  The Or gates spanned several
PCB's just to add to the challenge 

 

 

TrevorB

UK Member

 

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