@variablepulserate I know they existed in the 70s because they were common on a lot of the portable appliances my family used. They're also on a lot of the older heated tables here in Japan that would have been made in the 80s at the latest …
@variablepulserate I know they existed in the 70s because they were common on a lot of the portable appliances my family used. They're also on a lot of the older heated tables here in Japan that would have been made in the 80s at the latest …