Touchstone Semiconductor's Martin Tomasz explains how to interfact to capacitive touch sensors using basic 555-timer circuits.

Engineers usually have access to signal and function generators, as well as frequency counters and oscilloscopes, but they may not have access to capacitance or inductance meters. Using the test setup ...

For example, the effective capacitance of a 1-µF, 6.3-V-rated X5R MLCC can be reduced to 0.36 µF by applying 3 V dc (47% of the rated voltage).

The negative capacitance is a direct result of the intrinsic energy barrier between two stable polarization states of the ferroelectric layer, he says. In regular ferroelectric capacitors with two ...

The tip-sample capacity is composed of the capacity Ci of tip and oxide in series with the semiconductor’s depletion capacitance C dep. The depletion capacity forms when a voltage is introduced ...

The time delay is related to the speed of the signal in the material and the physical length: For the special case of FR4 with Dk = 4 and the speed of light in air as 12 inch/nsec, the capacitance per ...

Energy saving: artist’s impression of the gate material with negative capacitance. (Courtesy: Ella Maru Studio) By exploiting a curious effect called negative capacitance, researchers have designed a ...

Have you ever found the need to measure the capacitance of a capacitor? No multimeter handy (for shame)? Well, as it turns out you can actually measure capacitance using your Arduino Uno, with no ...

Negative capacitance in ferroelectric materials has hitherto only been predicted theoretically. Ferroelectrics switch their polarization when a certain critical voltage is reached.

Electrochemical measurements show that the quantum capacitance of graphene is influenced by scattering from charged impurities, and also suggest that a longstanding puzzle about the interfacial ...

Capacitance is the ability of a device to store electric charge, and as such, the electronic component that stores electric charge is called a capacitor. The earliest example of a capacitor is the ...