UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Rebooting Racal 383-2 Oscilloscope

knobtwiddler · 21st May 2021, 7:41 pm

>You may want something to monitor the current draw as you bring it up

I have a current monitor. Are you advocating bringing it up on the variac, whilst watching draw? Does anyone think there could be any risk involved? With linear PSUs I think variacs are a great idea, but I am nervy with items that might have switching supplies. My understanding is that a lot of TVs from this period had switching PSUs (they are not a modern invention!). Is there a chance that the Racal from 1972 might?

21st May 2021, 7:41 pm	#6
knobtwiddler Octode Join Date: Mar 2016 Location: London, UK. Posts: 1,051	Re: Rebooting Racal 383-2 Oscilloscope >You may want something to monitor the current draw as you bring it up I have a current monitor. Are you advocating bringing it up on the variac, whilst watching draw? Does anyone think there could be any risk involved? With linear PSUs I think variacs are a great idea, but I am nervy with items that might have switching supplies. My understanding is that a lot of TVs from this period had switching PSUs (they are not a modern invention!). Is there a chance that the Racal from 1972 might?