philips: B3X80U;

Dear Friends

I have in my collection a Philips B3X80U and I would like to know if someone have any information-specifications for the two light bulbs that are used to light up the face of the radio. I tried many of this screw type bulbs but no one is working. Any advice?

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Hallo Mr. Kougioumtzoglou,

The tubes and the resistors R3 and R4 are connected in series.
We now neglect the 2 NTC-resistors.

The tubes use 140 volts.
The voltage drop across the resistors R3 and R4 is 67 Volt.
Total 207 Volt.
The heating current is 0.1 amps.

When I count the heating circuit for the lights is about 13 volts rest to 220 volt operating voltage.
Take 2 × 7V/ 0.1A or 6,3V/0,1A lamps.

Best Regards WB.
 

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Thank you very much my friend I will buy the bulbs tomorrow and I will let you know the result

Best regrads

Kyriakos

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Good morning

Thaks very much for your help. I got the bulbs 6.3V, 0.1A as you adviced and now works fine.

Thank you again. 

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