UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Which power supply for Grundig Yacht boy 300?

julie_m · 16th Jul 2017, 7:35 pm

You can get "generic" power supplies with a selectable voltage output and a selection of plug tips to fit various appliances. A transistor radio should not need more than 300mA (but a higher-rated one will not do any harm). Watch the polarity, though. A lot of older kit had the centre pin as negative, although the more common standard today is for the centre pin to be positive. If in doubt, check for continuity between the centre pin of the input socket and each battery terminal.

16th Jul 2017, 7:35 pm	#3
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Which power supply for Grundig Yacht boy 300? You can get "generic" power supplies with a selectable voltage output and a selection of plug tips to fit various appliances. A transistor radio should not need more than 300mA (but a higher-rated one will not do any harm). Watch the polarity, though. A lot of older kit had the centre pin as negative, although the more common standard today is for the centre pin to be positive. If in doubt, check for continuity between the centre pin of the input socket and each battery terminal. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.