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1answer
31 views

What is E/A mean?

I'm trying to understand how is UCC28703 PWM-controller work. But I don't understand what do the following pictures mean: and . I know they are comparators, but i don't know what is E/A mean and ...
2
votes
1answer
67 views

Intuitive explanation for this hysteresis circuit?

simulate this circuit – Schematic created using CircuitLab I am trying to get an intuitive understanding of this small circuit. I have both breadboarded it to look at behavior on a scope ...
0
votes
1answer
24 views

ICL 7673 circuit Hysteresis Resistor values

I'm using the ICL 7673 circuit from datasheet "without external PNP transistors". Please help with deciding Rf and Rs resistor values for 0.5V hysteresis. Any help is much appreciated. Please see ...
2
votes
2answers
95 views

How to derive the node voltage for this comparator with hysteresis?

I have the following circuit. U26 is a simple unity buffer and U15 is just a dual comparator. I want the top comparator to compare the battery voltage (VBAT/2) on the inverting input with 2.0V ...
1
vote
3answers
197 views

What is the drawback of a high-value resistor for positive comparator feedback / hysteresis?

I'm building a simple circuit which has an LM211 comparator at its heart. The positive input is connected to a 10k-10k resistor divider across the supplies, stabilized by a 1uF capacitor. Hysteresis ...
0
votes
1answer
158 views

Adding hysteresis to MOSFET used as a switch

I have a low-voltage detection circuit which I use to trigger one of two LEDs (green, and red) that is powered off of a +9V battery cell. As the battery discharges, its output voltage decreases, until ...
2
votes
4answers
314 views

Is there a clever way to prevent a window comparator from oscillating?

Here is my schematic It's basically a crude battery level detector (I am very aware that this isn't the best way to guage battery life, I'm not here for that) it's not crucial that it is super ...
0
votes
2answers
188 views

Hysteresis not working properly

This question is related to my previous question about the battery charging and discharging. Here is the link to my previous question. I have made a small change in my previous schematic, which is ...
2
votes
2answers
287 views

Battery charging and discharging problem

I have designed a battery charging and discharging circuit. The main purpose of this circuit is to charge the battery and then discharge, one operation at a time. I have also added a hysteresis of ...
-1
votes
2answers
106 views

How to find exact low voltage and high voltage values?

How to find the Hysteresis comparator exact "V high and V low" values
1
vote
2answers
197 views

Simple circuit reacts to touching a node

I am trying to repeat a circuit from this post. For some reason it does not work properly, and trying to fix it I figure out strange behavior. LED turns on if I touch R3 with my finger or with ...
5
votes
1answer
130 views

How do I calculate the hysteresis losses of a straight line inductor?

In using a particular type of conductor for an antenna in AC frequencies between 3MHz and 30MHz (HF), it was suggested that magnetic hysteresis losses may be significant if the permeability of the ...
1
vote
1answer
137 views

How significant are hysteresis losses in iron wires with RF currents?

I understand that iron isn't a great choice of conductor for RF currents, as a wire dipole antenna for example. I understand there are several reasons, but I'm wondering specifically about one: ...
2
votes
2answers
802 views

Techniques for analyzing Comparator circuits?

I'm looking for some general guidelines/equations I can use to analyze circuits which use comparators. In particular, I'm interested in hysteresis. For example, take the following open ...
5
votes
2answers
128 views

Scaling voltage to meet two conditions at once

I am using an IC (STM6600) which, among other functions that I need, is also capable of Undervoltage Monitoring. It works like this: The IC monitors VCC in comparison to two thresholds, V_Low and ...
6
votes
2answers
7k views

Comparator with hysteresis equations

I'm trying to be sure I'm computing the values for this circuit right. Here's an example of the circuit I'm trying to build (it's going in a 12 V DC system, so I filled that in already). I ...
10
votes
6answers
5k views

what is “input hysteresis”?

I'm looking at a datasheet for a digital circuit and it specifies that the typical input hysteresis is 100 mV. What does this mean exactly?