Aiwa HS-PX557 - UK Vintage Radio Repair and Restoration Discussion Forum

vinrads · 5th Oct 2021, 5:10 pm

Have seen how much they are asking for these now ! question as I don't have an original re chargeable battery , I need to fix up some other supply , the external dc jack is marked up as 2 volts whereas the adaptor takes two 1.5 volt batteries ,as I don't have an adaptor I will be powering it via the jack , can you regulate three volts down to two volts? if I was using ext batteries or maybe I could find a mains power adaptor and convert it to two volts what do you think. Mick.

DMcMahon · 6th Oct 2021, 11:04 pm

Maybe just easier and for full compatibility, power from 2 x 1.5V batteries and copy/make the regulator/stabiliser circuit (from schematic) to get the 2 volts.

David

5th Oct 2021, 5:10 pm	#1
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,766	Aiwa HS-PX557 Have seen how much they are asking for these now ! question as I don't have an original re chargeable battery , I need to fix up some other supply , the external dc jack is marked up as 2 volts whereas the adaptor takes two 1.5 volt batteries ,as I don't have an adaptor I will be powering it via the jack , can you regulate three volts down to two volts? if I was using ext batteries or maybe I could find a mains power adaptor and convert it to two volts what do you think. Mick.

6th Oct 2021, 11:04 pm	#2
DMcMahon Dekatron Join Date: Apr 2019 Location: Worthing, West Sussex, UK. Posts: 6,604	Re: Aiwa HS-PX557 Maybe just easier and for full compatibility, power from 2 x 1.5V batteries and copy/make the regulator/stabiliser circuit (from schematic) to get the 2 volts. David