Posts

Showing posts from November, 2019

MicroElectronicsEx2

Image
MicroElectEngineerEx2.html Say this prayer: it helps! St. Michael the Archangel defend us in battle. Be our protection against the wickedness and snares of the Devil. May God rebuke him, we humbly pray, and do thou most Heavenly host, by the power of God cast into hell Satan and all the evil spirits who roam around the world seeking the ruin of souls. Amen. MicroElectrical Engineering Problem example 2. Still no differential equations here, but still much fun. Below is an op-amp operating from +-18 V power supplies fed with a sinusoidal voltage having 3V peak and delivers a sinusoidal voltage output of 10V peak to a 1 kilo ohm load. The amplifier draws a current of 2mA from the positive supply and 1mA from the negative supply. The input current of the amp is found to be sinusoidal with a 0.2mA peak. Find the voltage gain, the current gain, the power gain, the power drawn from the dc supplies, the power dissipated in the amplifier, and the amplifier effi

MicroElectEx1

Image
MicroElectEngineerEx1.html Say this prayer: it helps! St. Michael the Archangel defend us in battle. Be our protection against the wickedness and snares of the Devil. May God rebuke him, we humbly pray, and do thou most Heavenly host, by the power of God cast into hell Satan and all the evil spirits who roam around the world seeking the ruin of souls. Amen. Ok, here's my first MicroElectrical Engineering Problem example. No differential equations here, but still much fun. The input and output signals for an op-amp circuit are shown below. We wish to determine (a) if the op-amp circuit is linear and (b) the circuit gain. Below: solution (a)If the circuit is linear then the output is proportional to the input. Looking at the input-output indicates that between 1.25 ms and 2.5 ms and 4 ms and 6 ms the output is constant, but the input is changing. Thus, here the op-amp circuit is in SATURATION and is NOT LINEAR!! Below: solution (b) Between 0 and