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All items tagged with Circuits & Circuit Design and Test & Measurement (43)

| Check out the latest installment of Elektor Lab Notes. We cover some of the newest projects on our workbenches, including interesting innova...

| Build your own budget-friendly resonance meter, a versatile RF test instrument capable of measuring frequencies from 100 kHz to 50 MHz. Orig...

| Monitor up to six temperature points from -240°C to +850°C with this 8051-based temperature monitor and logger. Ideal for industrial applica...

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| Back in 2024, we introduced a high-quality variable-frequency audio notch filter. Now, we present a high-performance audio frequency generat...

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| There are many scenarios where measuring low resistance values, even in the milliohm range, is essential. For instance, it can help pinpoint...

| AC-powered devices are prevalent in residential, industrial, and commercial settings. Do you want a DIY-solution for determining when a fuse...

| Check out this interesting wideband AC millivoltmeter circuit from 1990. The simple design features 12 ranges, decent accuracy, 200 µV accur...

| Measuring a specific point (node) in an RF circuit with a regular oscilloscope probe can disrupt the circuit's performance, even when the pr...

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| Brushed DC motors are increasingly being replaced by brushless (BLDC) and stepper motor competitors. But their use still makes sense, as the...

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| Want to test batteries or solar panels? You need a load resistor. With this electronic load resistor project, you can not only simulate a lo...