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Nostalgia & History > How did they do it? (1)Date: 11/19/22 15:18 How did they do it? (1) Author: LarryDoyle How did PRR engines with 11,000v AC trolley voltage keep their headlight bulbs from quickly burning out?
-LD Date: 11/19/22 15:34 Re: How did they do it? (1) Author: krm152 LarryDoyle Wrote:
------------------------------------------------------- > How did PRR engines with 11,000v AC trolley > voltage keep their headlight bulbs from quickly > burning out? > > -LD According to the Wikipedia GG-1 article, "A transformer between the two cabs stepped-down the 11,000 V to the voltages needed for the traction motors and other equipment." Here is a link to that article: https://en.wikipedia.org/wiki/Pennsylvania_Railroad_class_GG1 ALLEN Date: 11/19/22 15:37 Re: How did they do it? (1) Author: train1275 Transformers and resistors.
I think the bulbs were originally 32Vdc, probably later 74Vdc. Edited 1 time(s). Last edit at 11/19/22 15:37 by train1275. Date: 11/19/22 15:47 Re: How did they do it? (1) Author: krm152 train1275 Wrote:
------------------------------------------------------- > Transformers and resistors. > > I think the bulbs were originally 32Vdc, probably > later 74Vdc. There is no difference between AC and DC when it comes to light bulbs. ALLEN Date: 11/19/22 16:18 Re: How did they do it? (1) Author: wcamp1472 The same way the 110,000vac commercial transmission lines' power doesn't
blow-up your house.. Transformers ... One of many of Nicola Tesla's inventions .... Duhhh! W. |