Jensen JCR160 digital clock running slow Tried JCR160 with 120v to 220v convertor in India found the clock looses 5 secs for every min. Tried replacing 110volt input transformer with different 230v input transformer found no change. Tried rewinding the primary side of the original transformer without disturbing the secondary winding & the voltage output still no change. Any solution available ?....
There is an option to choose 50 Hz or 60 Hz in main IC. Open the radio clock and see the number of IC. Download datashee of that IC and see for selection of 50/60 Hz. You have to just short the desired pin.
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Posted on Mar 08, 2009
The clock works off the frequency (hertz). In US the electrical wave frequency is 60HZ/sec and in India and many other countries 50HZ/sec. Hence, the clock slows down about 6 seconds or so every minute.
Posted on Nov 28, 2007
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Thanks, but do we have any fix for this?- Regards
I am also facing same problem due to mains 50/60 HZ being used for clock in put frequency.
Sonashi make digital clock radio does not show proper time. Tried using MM5369 ic with 3.579 mhz crystal but display flickers.
I also face the same problem
I use MAGNOVOX MCR140/17 clock radio. The product is excellent but the clock runs slow when used in India as the electrical frequency is 50 Hz compared to 60 Hz so I dont know what to do now.
The clock runs but it in running too slow
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