Статьи - 15

Alfredo Saab Steve Logan

Reducing low-frequency (1/f) noise generated by an IC voltage reference can prove difficult. In theory, adding a lowpass filter to a reference's output reduces noise. In practice, a lowpass RC filter for suppression of noise frequencies below ...

David Albean

The simple circuit shown accomplishes full-wave signal rectification with only one transistor (Fig. 1). This is done by exploiting the “gain reversal” phenomenon exhibited by a saturated bipolar transistor. This circuit will find ...

Michael Covington

The human ear is very good at detecting noise or missing cycles in a waveform, and since we have two ears, we can monitor two signals at once. I recently repaired an older lab instrument containing a quadrature encoder made with an incandescent ...

For most applications, current measurements are made by sensing the voltage drop across a resistor. There are two locations in a circuit that resistors are commonly placed for current measurements. The first location is between the power supply and ...

Eben Upton

It’s been nearly six years since we unleashed the $5 Raspberry Pi Zero on an unsuspecting world. Of all the products we’ve launched, Zero is still the one I’m proudest of: it most perfectly embodies our mission to give people ...