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

ms660 · 11th Oct 2019, 3:40 pm

If you want to drop some volts use Ohms law to calculate, eg: for 20 Volt drop @ 0.1 Amps = 20/0.1 = 200 Ohms......Power dissipated (Watts) = Isquared*R = 0.01*200 = 2 Watts dissipated.

Lawrence.

11th Oct 2019, 3:40 pm	#90
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Philips BX281U20 valve radio If you want to drop some volts use Ohms law to calculate, eg: for 20 Volt drop @ 0.1 Amps = 20/0.1 = 200 Ohms......Power dissipated (Watts) = IsquaredR = 0.01200 = 2 Watts dissipated. Lawrence.