I believe E1 used to be a part of the official standard but got dropped because E1 value resistors taken from other ranges don't have the wide tolerances E1 technically requires.
None the less, 100R, 1K, 10K and 100K are often all one really needs with digital circuitry. Including series and parallel pairs you have 50R, 100R, 200R, 500R, 1K, 2K, 5K, 10K, 20K, 50K, 100K, 200K. Not ideal perhaps, but usually good enough in most cases.
Some advocates would say the 100K is optional, meaning you only have to stock three resistors in total.
You can usually also get a long way with just 100nF, 10uF and 100uF capacitors.
None the less, 100R, 1K, 10K and 100K are often all one really needs with digital circuitry. Including series and parallel pairs you have 50R, 100R, 200R, 500R, 1K, 2K, 5K, 10K, 20K, 50K, 100K, 200K. Not ideal perhaps, but usually good enough in most cases.
Some advocates would say the 100K is optional, meaning you only have to stock three resistors in total.
You can usually also get a long way with just 100nF, 10uF and 100uF capacitors.
Statistics: Posted by hippy — Tue May 07, 2024 4:41 pm