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Original Message
They don't,
Posted by sser2 on August 8, 2017 at 12:22:57:
but there is a lot of old stock.
Modern SMPS or DC-DC converters are more reliable that vibrators, which suffer from contact burnout. I have 1937 Plymouth with authentic Philco AM radio in it. The radio works fine with DC-DC converter replacing the original vibrator power supply.