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What is better to energize the wall clock? Battery from the phone, computer power supply, car battery or battery? As it turned out, the most effective way to connect is an old charger from the phone.
In order to energize the clock from another power supply, a down converter DC DC-DC is required. Input voltage from 4.75v to 23v Output voltage from 1.0v to 17v
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A short link to the downgrade module with Aliexpress: clck.ru/DjNvu
Link to reworking the power supply • УНИВЕРСАЛЬНЫЙ БЛОК ПИТ...
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Just solder 4re wiring as shown in the clip to the DC converter,
To the battery, you need to solder the wires coming from the module with the letters IN To the clock wires with the letters Out.
Observe the polarity.
I connected the battery to the clock from the smartphone at 2500 mAh.
The wall clock began on the third day.
The voltage on the battery sank to 4 volts. And at the output from the lowering module ... the multimeter showed less than 1 volt.
I can assume that the best way to connect wall quartz watches through the DC converter is to the charger from any phone or smartphone.
The energized hours from the network can only become when the electricity is cut off.
The only downside, the need for a nearby outlet and a loose wire.