Is there a way to test whistle or horn relays independently to see if they are functioning? To clarify— if I had one removed from the locomotive or tender ..
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I use an old HO Tyco transformer that puts out a DC voltage. Just to test and see if the relay engages. Then I use a Lionel for the AC to test and see if the whistle motor spins.
The relay is activated by a +/- 2.5 volt DC offset, 0.5 to 1 VDC hold voltage superimposed on the AC output from the transformer. Some old whistle/horn controllers used by Lionel had a single D cell battery to activate the relay, so applying a single D cell battery power to the coil of the relay should activate it.
I have a few dc power sources. So if I use 1.5 to 2.5 to power the coil it should close the contacts?
Yes.
Ok thanks
@Jon G posted:Some old whistle/horn controllers used by Lionel had a single D cell battery to activate the relay, so applying a single D cell battery power to the coil of the relay should activate it.
This:
See also for more:
Lionel No. 147, 'D' Cell Horn/Bell Controller (5/29/22) | Mellow Hudson Mike
Mike
