Questions tagged [comparator]
A comparator compares two voltages or currents and switches an output to indicate which is larger.
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Will the TLV7031 low-voltage comparator work with this input voltage?
Since I have not worked with low power currents in the uA range before, I would like to ask you before starting the design. I have simulated the circuit below and have a few questions about it.
When ...
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Inverting and non-inverting comparator hysteresis
I am designing a circuit that routes two signals through two comparators based on the battery voltage.
Comparator 1 (relay control): The first signal drives a MOSFET that sinks a relay coil to ground ...
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Errors when building a single-supply Schmitt Trigger?
I was attempting to build a particular Schmitt Trigger in order to learn more about it. It's from the "Design with Operational Amplifiers and Analog Integrated Circuits" by Sergio Franco. On ...
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Why does given cicuit works as an oscillator and finding the oscillation frequency
The circuit:
simulate this circuit – Schematic created using CircuitLab
My work:
when \$\phi_1\$ = 1 and let intially Vout= VDD, the capacitor C1 will charge to \$C_1V_{DD}\$
When \$\phi_2\$ = 1,...
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How to make two components trigger together?
I have a feedback circuit for a device I am designing. The goal is to sense temperature changes with thermistors and then if certain conditions are met I want to use an analog switch to disconnect a ...
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Detecting blown fuse in LV AC circuit
I have the input stage to a power supply configured thusly:
Further regulation of the 12V rails is downstream of this figure and is outside the scope of this question.
I would ideally like to have a ...
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Delay of the LT1719 comparator
I have the following schematic of my real circuit. As the datasheet demands, I added 10 nF capacitors close to the supply voltage pins on the PCB.
I noticed a delay in the output signal before the ...
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LM 393 module connection wiring diagram not matching photo of module [closed]
Im waiting for delivery of a LM 393 module, trying to figure out the wiring diagram. I wish to connect a membrane switch to activate a 12v output signal. I have achieved this with a LM 393 module with ...
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What is the purpose of pulling up the output of a comparator to VCC? [duplicate]
Newbie here. I don't understand the purpose of resistor R3 here after the output of the square wave oscillator. Can someone explain? Thanks!
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Comparator crisp output
I have circuit where I am trying to enable a buck converter only when the input power is above 11.5V. And it should turn OFF when its below that voltage. I have a two voltage dividers. One with a ...
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LM393 comparator not pulling down
A voltage divider is fixing the non-inverting input at 1.65V. Even at 2.5V at the inverting input of the open-collector LM393 comparator, it's not pulling down to 0V (actually pulling the voltage to ...
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Low-power hybrid comparator block diagram and transistor-level design (90nm CMOS)
I’m currently working on my final year major project titled “Design of Low Power Hybrid Comparator using 90nm CMOS Technology.”
Our goal is to design a comparator that combines the features of both ...
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Tinkercad LM339 outputs to be used in logic gates, but I cannot get it to work
I am not sure why my tinkercad circuit is not working. My two inputs at the LM339 Output terminals both show a high voltage that should register as a 1 for both, hence causing the 7400 IC for NAND to ...
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Adjusting the pulse width of a comparator output
This question is a continuation of a question which I asked earlier in this forum.We are doing a discrete circuit implementation of an IrDA transceiver.This question is also related to it.
We made the ...
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Analysis of current mirror in LM339 comparator
I am designing a very simple comparator, using the LM339 as a reference. However, I don't quite understand the purpose of what resembles a current mirror implemented by Q5 and Q6 in the circuit ...
