Check out the resistor color code reference cards I just whipped up. I was inspired by the PCB versions that Octopart has been crowdfunding this week. Those didn’t have the information I woul… ...

The Excel cell formula below calculates the nearest standard 1%-resistor value without using a lookup table or macro. Type or electronically paste the text below into any cell (other than A1).

The formula will calculate the nearest 5% resistor for the value in cell A1. Be sure when copying the formula to other cells that both preliminary and final calculations are replicated.

For Higher physics, revise problem solving applied to resistor nee potential dividers and other networks which may involve several steps. tworks. Calculat ...

In efforts to avoid a production trimpot tweak, we can use 0.1% resistors when we need precise voltage dividers. To obtain non-standard values, two or more resistors in series work well – the total ...

By defining this equation as matching for CMRR, the LT5400 offers accuracy that’s better than just the resistor matching ratio. For example, the LT5400A guarantees: which improves worst-case CMRR to ...

The formula for Johnson-Nyquist noise power tells us that the expected noise voltage in a one-hertz bandwidth is just 0.9 nanovolts – tiny by any standard, and an order of magnitude smaller than ...

A positive temperature coefficient resistor (PTCR) is a resistor that varies its resistance with its temperature. A resistor that changes its resistance characteristics as a function of its ...