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Tube Radio Restoration
Look at it shine! Table restoration
DIY Bike Stereo
Hi there - a few comments:You may not be aware, but a good deal of electrical/electronic restoration was done on your radio before you started working on it. I note from the photo of the chassis, the filter capacitors have been replaced with newer electrolytic capacitors, and the older paper caps have been replaced with newer film capacitors. Had this not been done, it's unlikely this late 40's radio would not have worked when first turned on.In addition, other comments relate to the hot AC/DC chassis commonly used in radios of this era; in this case, the exterior of the radio is all plastic, so the possibility of a shock hazard is somewhat minimized.You have done an excellent job on the case restoration; however, I would suggest that readers who desire to undertake such a project consult some of the books available that give a more detailed description of the electrical/electronic restoration steps, for the purpose of functionality and especially safety.
Custom Acrylic Tube Radio
Remote controlled styro plane
You should consider adding a 1:1 isolation transformer for safety.
The intriging question ot the line cord connection to radio is because this kind of receiver were called "transformerless", meaning that the tubes filaments are designed to get certain amount of voltage, (35, 50 and 12 volts) and since they are all series connected, the total amount is around 127 volts. The first tube connected is the rectifier, and it draws the neccesary voltage to make the circuit works. Of course, when one filament is gone, the whole receiver becomes "dead."
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