UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - AVO wattage and powerfactor unit for 7's & 40's

TonyDuell · 28th Nov 2017, 5:28 pm

The right hand photograph shows a 4.7k 5% resistor. You read the bands in the order left to right, yellow = 4, violet = 7, red = 2 (2 zeros in the position) so 4700 ohms or 4.7k. The gold band is the 5% tolerance.

The left hand photograph shows a resistor using the old body-tip-spot code. The body is grey, which is 8. The tip (right hand tip in your photo) is red, which is 2. The spot is also red, so 2 more zeros. That's 8200 ohms or 8.2k. The left tip, being gold, again indicates 5% tolerance.

28th Nov 2017, 5:28 pm	#2
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,224	Re: Avo wattage and powerfactor unit for 7's & 40's The right hand photograph shows a 4.7k 5% resistor. You read the bands in the order left to right, yellow = 4, violet = 7, red = 2 (2 zeros in the position) so 4700 ohms or 4.7k. The gold band is the 5% tolerance. The left hand photograph shows a resistor using the old body-tip-spot code. The body is grey, which is 8. The tip (right hand tip in your photo) is red, which is 2. The spot is also red, so 2 more zeros. That's 8200 ohms or 8.2k. The left tip, being gold, again indicates 5% tolerance.