I realize this forum has discussed ZW transformers until its became a dead horse but.......
I have the 1948 ZW 250 with no “R”. It has no diode or resistor on the bulb wire.
I installed the TVS diodes across the output terminals U and the a, b, c, d respectively. Will this also protect the light bulbs on the transformer and therefore no need for a diode on the bulb wire?
Thanks
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The light bulbs in the ZW will not be of concern. You have the TVS Diodes where they need to be.
Olsens has the service documents for both the ZW and ZW-R with schematics and such:
http://olsenstoy.com/searchcd31.htm?itm=671
http://olsenstoy.com/searchcd31.htm?itm=672
The old ZW used 18 volt indicator bulbs with no resistors. The ZW-R added resistors and used 6V indicator bulbs.
Awesome, thanks for the valuable experience and info.
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