Questions tagged [analog]
Analog circuits have a range of voltages, rather than just two as in digital logic.
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What is the correct formula for the 3db frequency of an RC or LC Circuit?
Before we jump to another post where the formula is
I am reading through the text book Microelectronic Circuits 8th edition by SEDRA/SMITH. In the text, they show this table.
Here it shows the time ...
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Do I need a new multimeter, mine seems to be reading double what the DC volts should be
I was measuring my car battery, which works fine, as a test and my multimeter read 26 volts. Not sure if I'm reading it wrong, or if it just likes to double volts to make me happy. It's a GMT-312 from ...
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Simple square wave frequency multiplier/divider
I have a square wave 0-12 V input signal that varies from 30-150 Hz, which I wish to multiply to an output square wave 0-12 V signal of 60-300 Hz. In this case, the multiplier is 2, however I ideally ...
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Is there an analog circuit that rounds voltage or current to digital-like values?
Is there a simpler circuit than basically using an ADC followed by a DAC for this?
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Analog pulse width detection [closed]
I have to make an analog circuit that the input is a pwm, when the pulse width is 1000ms the output must be 0 and when the pulse width is 750ms the output must be 1, i tried using an 555 with a ...
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Wien bridge oscillates at 6x expected freq and amplitude oscillates too
A while ago I made a Wien bridge oscillator to go from ~500 Hz to ~1 MHz, using an NE5532 opamp and stabilizing amplitude with the typical opposing diodes method. Worked fine, but the output was too ...
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How can the power of an oscillator be calculated?
I am designing a hartley oscillator and would like to know how much power it consumes. How can I figure out how much power the hartley oscillator consumes mathematically?
edit: I meant mathematically ...
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What is the proper way to make a configurable split-supply voltage clamp with voltage dividers?
Being a beginner in electronics and not having had exposure to a lot of “best practices” I was trying to generalize the voltage clamp to arbitrary positive and negative clamping voltages. The ...
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Clock feedthrough of the bootstrapped switch
I'm learning about the bootstrapped switch through this paper. Razavi used a 20 µm / 28 nm NMOS (M1) as the main switch to achieve low Ron. I am wondering does this wide device cause any problem ...
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Why does this two stage op-amp not work?
I was trying to simulate a two stage op-amp I had just learned about. I am going step by step i.e. as you can see from the schematic I have started with ideal current sources.
I know that this op-amp ...
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How does analog IC benefit from channel length shrinking?
I have some experience in OTA design for both 180 nm and 130 nm technologies. I didn't see much advantage of using 130 nm, as I had to use quite long channel length to achieve an acceptable gain in ...
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Why the loop bandwidth must be much smaller than the input frequency to ensure settling behavior?
Razavi said, in Section 9.6 Loop bandwidth of his book RF Microelectronics that
In the design of PLLs, we impose... a loop bandwidth much smaller than the input frequency to ensure a well-behaved ...
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NE567 supply voltage
The below image lists supply voltages for NE series ICs:
Figure 1: supply voltage
Why is the IC supply voltage given as absolute positive voltage (some in thelist specify +/- values) rather than a ...
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Implementation of Circuit in AN104 for Load Transient Test
I have been testing the transient response of line regulator simply with a MOS and the resistor, this method, however, cannot generate arbitrary current and the current is not accurate. To improve the ...
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Amplification Calculation
I have a question about how to calculate the amplification of amplifier.
Here is the circuit:
The equation provided by in the datasheet for calculating the output is:
CURphase = VOFS - amplification *...
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