All items tagged with Circuits & Circuit Design and Test & Measurement (82)

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| Problems with cables or wiring harnesses? The electronic circuit presented here is an attachment for an oscilloscope that enables Time Domai...

| Audio notch filters are useful when an engineer needs to see low-level harmonic distortion that would otherwise be buried under a much large...

| This simple inductance meter uses an ATmega328 and LM339 to measure coil values at low cost. The design provides a practical way to estimate...

| Audio measurements are the focus of Elektor Lab Talk #45, where Brian Tristam Williams, Jens Nickel, and Alfred Rosenkränzer dug into distor...

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| Operational amplifiers in analog circuits typically use negative feedback. However, phase shifts in the feedback loop can cause instability,...

| THREE-PHASE SINE WAVE VCOThis three-phase sine wave VCO uses classic OTA devices like the RCA3080 to generate three sinusoidal outputs with...

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| To weigh large items like bicycles or suitcases, standard scales are often impractical. This solution uses up to four small scales that tran...

| Audio amplifier fault diagnosis gets very practical in this short Elektor TV clip. Roberto Armani shows how a square-wave test can reveal be...

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| This second part of the small project series is a practical guide to assembling and testing the precision laboratory power supply presented...

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| This article describes a versatile Raspberry Pi RP2040–based signal generator that can be operated from a PC through an RS-232 interface. Re...