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It doesn't mean i wont use itI bought a resistor substitution box 50 years ago.I have never used it.
Ok thanksI have a precision divider (a type of potentiometer) that I use fairly regularly.
It's a bit specialist in nature, and I tend to agree with Colin about not using a substitution box (although I don't own one).
Sure you may use it, just be aware of how it may differ from a simple resistor (series inductance and parallel capacitance). These may not be important for your circuits if they are audio frequency.
If you are not using it for frequencies above 30 KHz, a box will be better. A pot is usually a half watt which is not very high and there will also be insertion loss containing capacitance and inductive reactance affecting your circuit depending on frequency. A wirewound pot would be the worst at the higher frequencies. Use fixed carbon film resistors when possible.Hi Guys. I am on a path of of buying parts for my DIY resistance box so i was wondering is a Decade resistance box better than a Potenciometer one and vise versa? What would the benefits and down sides be of one and other?
Ok thanksIf you are not using it for frequencies above 30 KHz, a box will be better. A pot is usually a half watt which is not very high and there will also be insertion loss containing capacitance and inductive reactance affecting your circuit depending on frequency. A wirewound pot would be the worst at the higher frequencies. Use fixed carbon film resistors when possible.