On the other hand, if the capacitance drop is already more than 50% due to dc bias effect (Fig. 2, again), the capacitance loss due to ac signal becomes much smaller.

If that’s your question, [W2AEW] has an answer for you with this informative video on the basics of bias tees. A bias tee allows a DC bias to be laid over an RF signal, and while that sounds ...

Figure 2 Examples of AC vs. DC coupled applications for amplifier/converter front ends. Common mode: broken. If the common mode bias is not provided or maintained, then the converter will have gain ...

The last method used to bias a video signal is called a dc restore, and it can achieve black-level accuracy approaching ±1 LSB. The first thing you notice in Figure 4d is that this circuit doesn ...

Also known as Dielectric Analysis (DEA), dielectric cure monitoring is an AC technique that uses a sinusoidal signal of a chosen frequency and amplitude to excite a sensor, along with a DC bias of ...

This makes achieving precision dc and ac performance in medium bandwidth application areas a challenge and designers end up trading off system goals to do so. This article describes continuous-time ...

Unless a large enough dc voltage is present on either side of the ac coupling capacitor, use nonpolarized capacitors. Some capacitors, such as electrolytics, function as diodes if you do not properly ...