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27th Mar 2020, 4:34 pm

Regarding the 10% capacitors made to 2% tolerance (not accuracy as it is often called), that happens. Just like petrol, the old British Standard said "at least a gallon per indicated gallon" now it's 1 litre +/- 1%, so we all get 990ml of petrol for a litre. There is an E symbol for quantity which means the mean quantity, doesn't apply to petrol.

Back on topic, resistors as opposed to capacitors don't need any more material to be accurate so they probably better now.

27th Mar 2020, 4:34 pm	#35
Guest Guest Posts: n/a	Re: Another DIY voltage reference... Regarding the 10% capacitors made to 2% tolerance (not accuracy as it is often called), that happens. Just like petrol, the old British Standard said "at least a gallon per indicated gallon" now it's 1 litre +/- 1%, so we all get 990ml of petrol for a litre. There is an E symbol for quantity which means the mean quantity, doesn't apply to petrol. Back on topic, resistors as opposed to capacitors don't need any more material to be accurate so they probably better now.