Reply to "Replacing Batteries with BCRs in MTH PS1 and PS2 Locomotives"

swrrOGR Forum Member

@gunrunnerjohn posted:
Nope, I actually still remember some of the stuff well beyond high school electronics. We also haven't forgotten how to read the labels on a capacitor either.
The BCR for 5V engines is four 1.5F 2.7 volt capacitors in series with a Zener diode across each cap to equalize the charge voltages. The cost will be a bit more than $1.
Don't they look the same?

Agreed the cost will be more than $1 with Zenars. The Bcr for 5volt is actually pretty reasonably priced when you take into account time. Not so convinced on the 9v version at $30. Have you dissected a 9 volt BCR?

4/27/226:42 PM

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