The trolling Prickman ****wit wrote:

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I have also seen a Chines made portable radio set without transformer. It was boldly written on it "transformerless AC radio" apparently the manufacturer was boasting. A guy opened it to find out what was inside and showed us this cap drop power supply so he warned the friend against possible electric shock when he touch any metal part. the friend replied there were no metal parts so its safe. Not long before that he got zapped when he forgot that the antenna was made of metal.


** The antenna only needs a low value series cap to make it safe.

Not so long ago, lots or radios and TV were "hot chassis" designs with the antennas connected via small caps or isolating baluns.

Such sets normally have no video or audio connectors.

So a single failure in a cap would render the safety factor null. It
wouldn't even affect the operation of the radio, so no one would know.



** Same goes for any Class 2 device with a SMPS that uses a Y2 cap to supress RFI - but you are such a bull****ting ****head you have no idea what that even is.

For the benefit of others he

The caps used in hot chassis radios and TVs were all special high voltage ceramics rated for the task.




..... Phil