[PRCo] Re: PCC Control

[Fred Schneider]

Here is Mike Taplin's response to the issue of MT that had the PCC  
articles.

On May 16, 2007, at 5:01 AM, mike taplin wrote:

> Mike could if all his magazines were not in boxes following a house  
> move - I think I'll need another month to get sorted. My guess is  
> late 1960s.
> Mike
>
>> Bob and anyone else crazy enough to tune in to this station:
>>
>> There was an two or three old old issues of Modern Tramway with a  
>> pieces by W. J. (Jack) Wyse that explained all this.   They  
>> covered both the high voltage and the low voltage (32 volt) wiring  
>> on a pre-war PCC and it was probably the best explanation that  
>> appeared in print anywhere.   But it takes a whole bunch of  
>> evenings looking at the wiring diagrams before it all sinks in.     
>> It explains the sequence of all the motoring, braking and field  
>> shunting contactors and what they do.  It was very wordy but that  
>> is necessary for a very complex subject.    It was almost  
>> essential that you have a prior course in physics or electronics  
>> before you read the articles. Jack never wrote a subsequent  
>> dissertation that covered the changes needed for extended dynamic  
>> braking.
>>
>> I don't remember when it was published but perhaps Mike Taplin can  
>> come back to us with a citation.    It was sometime back in the  
>> 1960s.
>>
>>
>>
>> F3
>>
>> On May 15, 2007, at 6:58 PM, Bob Dietrich wrote: