Re: Incorrect bell?
I did measure at 25Hz 70V, The transformer mentioned over, load 47 ohms resistor, and I used a 2.2 uF capacitor in series with the transformer.
The current was about 0.022A and the load is approx 3650 ohms or a REN load close to 2 after the old standard.
I guess a 240 to 24 small transformer from an adapter will do the job.
I did also try to change the 47 ohms resistor with a DC ringer of 37 ohms, and it rang loud enough.
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