UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

trobbins · 17th Oct 2021, 5:59 am

When relying on a VA rating, the current rating is 157mArms with PF=1 (ie. a resistive load). If your load is resistive and the resistance is not overtly temperature sensitive (like a valve heater resistance which has a high in-rush), then you could well be ok. If you are rectifying the 19V and have 3W of DC loading then that may be a step too far for the secondary winding.

17th Oct 2021, 5:59 am	#3
trobbins Heptode Join Date: Oct 2009 Location: Melbourne Australia Posts: 901	Re: Transformer output current. When relying on a VA rating, the current rating is 157mArms with PF=1 (ie. a resistive load). If your load is resistive and the resistance is not overtly temperature sensitive (like a valve heater resistance which has a high in-rush), then you could well be ok. If you are rectifying the 19V and have 3W of DC loading then that may be a step too far for the secondary winding.