Lower Threshold Voltage of Inverting Schmitt Trigger Calculator

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Schmitt Trigger

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✖Saturation Voltage is a condition where the output of the trigger remains low even when the input voltage is above the lower threshold voltage.ⓘ Saturation Voltage [V_sat]			+10% -10%
✖Resistance 2 is a measure of the opposition to the flow of electric current through a material.ⓘ Resistance 2 [R₂]			+10% -10%
✖Resistance 1 is a measure of the opposition to the flow of electric current through a material.ⓘ Resistance 1 [R₁]			+10% -10%

✖Feedback Threshold Voltage is the voltage at which a feedback loop begins to amplify the input signal.ⓘ Lower Threshold Voltage of Inverting Schmitt Trigger [V_f]

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Formula

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Lower Threshold Voltage of Inverting Schmitt Trigger

Formula

`"V"_{"f"} = -"V"_{"sat"}*("R"_{"2"}/("R"_{"1"}+"R"_{"2"}))`

Example

`"-0.410526V"=-"1.2V"*("5.2kΩ"/("10kΩ"+"5.2kΩ"))`

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Lower Threshold Voltage of Inverting Schmitt Trigger Solution

STEP 0: Pre-Calculation Summary

Formula Used

Feedback Threshold Voltage = -Saturation Voltage*(Resistance 2/(Resistance 1+Resistance 2))
V_f = -V_sat*(R₂/(R₁+R₂))
This formula uses 4 Variables

Variables Used

Feedback Threshold Voltage - (Measured in Volt) - Feedback Threshold Voltage is the voltage at which a feedback loop begins to amplify the input signal.
Saturation Voltage - (Measured in Volt) - Saturation Voltage is a condition where the output of the trigger remains low even when the input voltage is above the lower threshold voltage.
Resistance 2 - (Measured in Ohm) - Resistance 2 is a measure of the opposition to the flow of electric current through a material.
Resistance 1 - (Measured in Ohm) - Resistance 1 is a measure of the opposition to the flow of electric current through a material.

STEP 1: Convert Input(s) to Base Unit

Saturation Voltage: 1.2 Volt --> 1.2 Volt No Conversion Required
Resistance 2: 5.2 Kilohm --> 5200 Ohm (Check conversion here)
Resistance 1: 10 Kilohm --> 10000 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_f = -V_sat*(R₂/(R₁+R₂)) --> -1.2*(5200/(10000+5200))

Evaluating ... ...

V_f = -0.410526315789474

STEP 3: Convert Result to Output's Unit

-0.410526315789474 Volt --> No Conversion Required

FINAL ANSWER

-0.410526315789474 ≈ -0.410526 Volt <-- Feedback Threshold Voltage

(Calculation completed in 00.004 seconds)

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VIT University (VIT), Chennai

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< 15 Schmitt Trigger Calculators

Voltage Transfer Equation for Inverting Schmitt Trigger

Go Inverting Input Voltage = Input Offset Voltage*(Resistance 2/(Resistance 1+Resistance 2))+Output Voltage*(Resistance 1/(Resistance 1+Resistance 2))

Lower Threshold Voltage of Inverting Schmitt Trigger

Go Feedback Threshold Voltage = -Saturation Voltage*(Resistance 2/(Resistance 1+Resistance 2))

Input Voltage of Non-Inverting Schmitt Trigger

Go Non-Inverting Input Voltage = (Resistance 1/(Resistance 1+Resistance 2))*Output Voltage

Upper Treshold Voltage of Inverting Schmitt Trigger

Go Upper Threshold Voltage = +Saturation Voltage*Resistance 2/(Resistance 1+Resistance 2)

Input Voltage of Inverting Schmitt Trigger

Go Inverting Input Voltage = Final Voltage*((Resistance 1+Resistance 2)/Resistance 1)

Voltage Change of Controller

Go Voltage Change = (2*Saturation Voltage*Resistance 1)/(Resistance 2+Resistance 1)

Open Loop Gain of Schmitt Trigger

Go Open Loop Gain = (Final Voltage)/(Non-Inverting Input Voltage-Inverting Input Voltage)

Final Voltage of Schmitt Trigger

Go Final Voltage = Open Loop Gain*(Non-Inverting Input Voltage-Inverting Input Voltage)

Lower Threshold Voltage of Non Inverting Schmitt Trigger

Go Lower Threshold Voltage = -Saturation Voltage*(Resistance 2/Resistance 1)

Hysteresis Loss of Non-Inverting Schmitt Trigger

Go Hysteresis Loss = 2*Saturation Voltage*(Resistance 2/Resistance 1)

Component Resistance of Controller

Go Component Resistance of Controller = 1/(1/Resistance 1+1/Resistance 2)

Positive Saturation Voltage of Schmitt Trigger

Go Saturation Voltage = +Supply Voltage of Op Amp-Small Voltage Drop

Negative Saturation Voltage of Srchmitt Trigger

Go Saturation Voltage = -Emitter Voltage+Small Voltage Drop

Input Current of Schmitt Trigger

Go Input Current = Input Voltage/Input Resistance

Resistance of Schmitt Trigger

Go Input Resistance = Input Voltage/Input Current

Lower Threshold Voltage of Inverting Schmitt Trigger Formula

Feedback Threshold Voltage = -Saturation Voltage*(Resistance 2/(Resistance 1+Resistance 2))
V_f = -V_sat*(R₂/(R₁+R₂))

What is lower threshold voltage ?

Lower threshold voltage is the input voltage at which the output voltage of a Schmitt trigger will switch from high to low. It is also known as the lower trip point.

How to Calculate Lower Threshold Voltage of Inverting Schmitt Trigger?

Lower Threshold Voltage of Inverting Schmitt Trigger calculator uses Feedback Threshold Voltage = -Saturation Voltage*(Resistance 2/(Resistance 1+Resistance 2)) to calculate the Feedback Threshold Voltage, The Lower Threshold Voltage of Inverting Schmitt Trigger formula determines when the output will switch from high to low. Feedback Threshold Voltage is denoted by V_f symbol.

How to calculate Lower Threshold Voltage of Inverting Schmitt Trigger using this online calculator? To use this online calculator for Lower Threshold Voltage of Inverting Schmitt Trigger, enter Saturation Voltage (V_sat), Resistance 2 (R₂) & Resistance 1 (R₁) and hit the calculate button. Here is how the Lower Threshold Voltage of Inverting Schmitt Trigger calculation can be explained with given input values -> -0.410526 = -1.2*(5200/(10000+5200)).

FAQ

What is Lower Threshold Voltage of Inverting Schmitt Trigger?

The Lower Threshold Voltage of Inverting Schmitt Trigger formula determines when the output will switch from high to low and is represented as V_f = -V_sat*(R₂/(R₁+R₂)) or Feedback Threshold Voltage = -Saturation Voltage*(Resistance 2/(Resistance 1+Resistance 2)). Saturation Voltage is a condition where the output of the trigger remains low even when the input voltage is above the lower threshold voltage, Resistance 2 is a measure of the opposition to the flow of electric current through a material & Resistance 1 is a measure of the opposition to the flow of electric current through a material.

How to calculate Lower Threshold Voltage of Inverting Schmitt Trigger?

The Lower Threshold Voltage of Inverting Schmitt Trigger formula determines when the output will switch from high to low is calculated using Feedback Threshold Voltage = -Saturation Voltage*(Resistance 2/(Resistance 1+Resistance 2)). To calculate Lower Threshold Voltage of Inverting Schmitt Trigger, you need Saturation Voltage (V_sat), Resistance 2 (R₂) & Resistance 1 (R₁). With our tool, you need to enter the respective value for Saturation Voltage, Resistance 2 & Resistance 1 and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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