This is my first post here and not even sure if I am posting this in the right place, I did some googling and found this forum.

I am a clockmaker/repairer by profession and am currently working on a customers clock, a vintage flip clock, Solari Cifra 3. Customer said it had stopped working altogether from one day to the next. I got it in, I live in Europe by the way, 220 volts and 50hz, so does my customer.
I have worked on this type of clock before and the power supply should be straight forward, but not with this one. To my surprise, this clock is labeled as being for 125 volts and 50hz. Someone has placed inside the clock, a resistor connected to a capacitor, presumably toning down the incoming 220v to 125v and I suspect this has failed. I have bypassed the capacitor and resistor with a power transformer, supplying the clock with 110v and the motor started running again just fine.

I need some help in correctly identifying the components that I need to purchase. I will try to attach 2 photos of the both components. Ideally I am looking to purchase small quantities, 1, 2 or if need be 10 or 20 of each.

Any help is appreciated and if I posted this in the wrong place, please correct me and tell me where to post it, many thanks!

Robert

 

https://aliexpress.ru/item/32993982....productlist.search_results.45.225d4aa6edzTZd

АDDED:

The travel adapter uses a Triac and gives a Chopped Sine Wave.

It is not about SC-21C.
SC-21C is simple iron autotransformer, without any electronics.
See: MINI COMPACT 220V-110V 50W SC-21C BD6220 VOLTAGE CONVERTER AUTOTRANSFORMER

 

Thanks, I was thinking about that, just eliminating the added parts altogether and using a converter outside of the clock. Just not a US$ 2 dollar one, spend a little bit more

 

The travel adapter uses a Triac and gives a Chopped Sine Wave. Better avoid it.
Since the current drawn by the clock is very small, a Potential Divider using a pair of Capacitors will work just fine.
A pair of 0.5 uF @ 400 VAC should the job. Connect them in series across the power supply and feed the clock taking the voltage across 1 capacitor.

 

And connect a 100 K resistor across each capacitor to discharge them when disconnected from the mains to avoid any accidental shock!

 

This is my first post here and not even sure if I am posting this in the right place, I did some googling and found this forum.

I am a clockmaker/repairer by profession and am currently working on a customers clock, a vintage flip clock, Solari Cifra 3. Customer said it had stopped working altogether from one day to the next. I got it in, I live in Europe by the way, 220 volts and 50hz, so does my customer.
I have worked on this type of clock before and the power supply should be straight forward, but not with this one. To my surprise, this clock is labeled as being for 125 volts and 50hz. Someone has placed inside the clock, a resistor connected to a capacitor, presumably toning down the incoming 220v to 125v and I suspect this has failed. I have bypassed the capacitor and resistor with a power transformer, supplying the clock with 110v and the motor started running again just fine.

I need some help in correctly identifying the components that I need to purchase. I will try to attach 2 photos of the both components. Ideally I am looking to purchase small quantities, 1, 2 or if need be 10 or 20 of each.

Any help is appreciated and if I posted this in the wrong place, please correct me and tell me where to post it, many thanks!

Robert

The Capacitor is 470 nF 275V , and the resistor can be any value from 470K to 680K.