I have a group of 10 bulbs that are powered by 2 AA batteries. I don't know if they are GOW or GOR, but are quite small. How can they be used without having to keep batteris on them? Would a picture help?
Lynn
Lynn
pgandw said:LoudMusic
I don't mean to rain on your parade. But those twin coil switch (snapper type) machines you have slowed down were designed for a momentary current (I mean 1 sec or less - preferably much less - duration). They have extremely low resistance windings - less than 10 ohms - to generate maximum power from a very brief shot of high current. If the current is kept on, they get VERY hot VERY quickly. If they are Atlas switch machines (or similar) that overheat, the plastic casing softens and jams the mechanisms. Other makes without a plastic case will melt the wire insulation into either a short or open.
By inserting a resistance into the circuit as you are doing with the power pack, you are reducing voltage and current at the switch machine but significantly increasing the duration of the current. I would be checking for heat buildup in the switch machines before I would be comfortable with your arrangement. If they are anything more than warm after a use or two, revert back to full power for very brief intervals. A switch machine on fire is not something I recommend experiencing - don't ask me how I know! And the smell may lead to revocation of your modeler's license by the CEO as evidence that your toy trains are too dangerous for YOU to play with.
yours in staying safe