Articles and news - 6

RFL-class logic gates
RFL-class logic gates
12.25.2023 Circuits

This Design Idea describes a new class of logic gates, which we have named resistor-FET-logic, aka “RFL.”...

New full-wave precision rectifier has versatile
New full-wave precision rectifier has versatile current mode outputs
12.22.2023 Circuits

A classic analog application is the full-wave precision rectifier (absolute value) function. Many variations exist on this theme, each with its own supposed (often rather minor and sometimes downright dubious) advantages compared to competing topologies...

Understanding losses BLDC motors
Understanding losses in BLDC motors
12.21.2023 Articles

Brushless DC motors transform electrical power into mechanical power. However, there’s no such thing as a perfect motor; there are always losses in the transformation...

Chasing wild ghosts
Chasing wild ghosts
12.20.2023 Articles

It was a no brainer – at first. Circa 1985 equipment still in use by telcos, the DUT was a remote-operated twisted-pair telephone cable analyzer. We had extensively reverse-engineered and repaired several of these a couple years ago, the OEM was defunct...

Multivibrator also makes true-zero output op-amp
Multivibrator also makes true-zero output of the op-amp
12.19.2023 Circuits

While choosing an op-amp buffer, some sources of negative supply were considered, because the buffer op-amp had to provide true zero voltage on its output...

Bridge measures small capacitance presence large
Bridge measures small capacitance in presence of large strays
12.18.2023 Circuits

Capacitance sensors measure a wide variety of physical quantities, such as position, acceleration, pressure and fluid level. The capacitance changes are often much smaller than stray capacitances, especially if the sensor is remotely placed...

0.05 micro deg chopped amplifier requires
0.05 µV/°C chopped amplifier requires only 5 µA supply current
12.15.2023 Circuits

Figure shows a chopped amplifier that requires only 5.5 µA supply current. Offset Voltage is 5 µV, with 0.05 µV/°C drift...

12.14.2023 News

HiSilicon, the semiconductor subsidiary of Huawei, has launched the Ascend 910B AI-GPU processor and is enjoying strong orders for the part from across China, according to TrendForce...

Single supply function generator outputs buffered
Single supply function generator outputs buffered squares, triangles, and sines
12.13.2023 Circuits

The traditional analog function generator with its customary triple-threat ensemble of square, triangle, and sine waveform outputs is a familiar tool on electronics lab benches...

Bandpass filter has adjustable
Bandpass filter has adjustable Q
12.12.2023 Circuits

The bandpass filter circuit features an electronically controlled Q. Q for a bandpass filter is defined as the ratio of the 3 dB pass bandwidth to the stop bandwidth at some specified attenuation...

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