What is the purpose of this op amp configuration shown?How does an op-amp become stable in this circuit?Would this JFET+op-amp circuit work?What's the purpose of this voltage noise test circuit?What is this RC local feedback configuration?inverting op-amp configuration using lm324n icOp Amp - Positive vs Negative feedback from the component levelOp-Amp for the 50MHz unity gain voltageWant to know more about this op-amp configurationSolving for V+ using VoutWhat is the purpose of the op-amp feedback circuit?
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What is the purpose of this op amp configuration shown?
How does an op-amp become stable in this circuit?Would this JFET+op-amp circuit work?What's the purpose of this voltage noise test circuit?What is this RC local feedback configuration?inverting op-amp configuration using lm324n icOp Amp - Positive vs Negative feedback from the component levelOp-Amp for the 50MHz unity gain voltageWant to know more about this op-amp configurationSolving for V+ using VoutWhat is the purpose of the op-amp feedback circuit?
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I've been researching common amplifier configurations, but the only ones with positive feedback that I have discovered is a negative resistance simulator, however that has negative feedback too.
operational-amplifier
asked 1 hour ago
elecNoobelecNoob
61
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add a comment |
$begingroup$
I've been researching common amplifier configurations, but the only ones with positive feedback that I have discovered is a negative resistance simulator, however that has negative feedback too.
operational-amplifier
asked 1 hour ago
elecNoobelecNoob
61
New contributor
elecNoob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
1
$begingroup$
I think the point is for you to work out what it does for yourself.
$endgroup$
– Finbarr
1 hour ago
add a comment |
$begingroup$
I've been researching common amplifier configurations, but the only ones with positive feedback that I have discovered is a negative resistance simulator, however that has negative feedback too.
operational-amplifier
asked 1 hour ago
elecNoobelecNoob
61
New contributor
elecNoob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I've been researching common amplifier configurations, but the only ones with positive feedback that I have discovered is a negative resistance simulator, however that has negative feedback too.
operational-amplifier
operational-amplifier
asked 1 hour ago
elecNoobelecNoob
61
New contributor
elecNoob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 hour ago
elecNoobelecNoob
61
New contributor
elecNoob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 hour ago
elecNoobelecNoob
61
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elecNoob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 hour ago
elecNoobelecNoob
61
asked 1 hour ago
elecNoobelecNoob
61
61
New contributor
elecNoob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
elecNoob is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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Check out our Code of Conduct.
1
$begingroup$
I think the point is for you to work out what it does for yourself.
$endgroup$
– Finbarr
1 hour ago
add a comment |
1
$begingroup$
I think the point is for you to work out what it does for yourself.
$endgroup$
– Finbarr
1 hour ago
1
1
$begingroup$
I think the point is for you to work out what it does for yourself.
$endgroup$
– Finbarr
1 hour ago
$begingroup$
I think the point is for you to work out what it does for yourself.
$endgroup$
– Finbarr
1 hour ago
add a comment |
1 Answer
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It's a comparator basically. It is a Schmitt trigger. It has a variable reference value, i.e. controlled using the R2 and R1 resistances. At the non-inverting input (using voltage divider arrangement), $$V_+ = fracR_1R_1 + R_2 * V_o$$ and at inverting input, $$ V_- = Vi $$ at the inverting terminal.
Now, output can be either $ +V_s $ or $ -V_s $ depending on whether non-inverting terminal voltage is higher or not respectively. So, the output is $beta V_s$ or $-beta V_s $ where $ beta = fracR_1R_1 + R_2 $.
If first output is in positive saturation and then $V_i$ goes above $beta V_s$, then output changes to $-V_s$. Similarly, when $V_i$ goes below $-beta V_s$, then output changes to $ +V_s$.
You can find a lot of websites that explain this circuit. Just search for Schmitt trigger.
answered 1 hour ago
akshayk07akshayk07
252116
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1 Answer
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$begingroup$
It's a comparator basically. It is a Schmitt trigger. It has a variable reference value, i.e. controlled using the R2 and R1 resistances. At the non-inverting input (using voltage divider arrangement), $$V_+ = fracR_1R_1 + R_2 * V_o$$ and at inverting input, $$ V_- = Vi $$ at the inverting terminal.
Now, output can be either $ +V_s $ or $ -V_s $ depending on whether non-inverting terminal voltage is higher or not respectively. So, the output is $beta V_s$ or $-beta V_s $ where $ beta = fracR_1R_1 + R_2 $.
If first output is in positive saturation and then $V_i$ goes above $beta V_s$, then output changes to $-V_s$. Similarly, when $V_i$ goes below $-beta V_s$, then output changes to $ +V_s$.
You can find a lot of websites that explain this circuit. Just search for Schmitt trigger.
answered 1 hour ago
akshayk07akshayk07
252116
$endgroup$
add a comment |
$begingroup$
It's a comparator basically. It is a Schmitt trigger. It has a variable reference value, i.e. controlled using the R2 and R1 resistances. At the non-inverting input (using voltage divider arrangement), $$V_+ = fracR_1R_1 + R_2 * V_o$$ and at inverting input, $$ V_- = Vi $$ at the inverting terminal.
Now, output can be either $ +V_s $ or $ -V_s $ depending on whether non-inverting terminal voltage is higher or not respectively. So, the output is $beta V_s$ or $-beta V_s $ where $ beta = fracR_1R_1 + R_2 $.
If first output is in positive saturation and then $V_i$ goes above $beta V_s$, then output changes to $-V_s$. Similarly, when $V_i$ goes below $-beta V_s$, then output changes to $ +V_s$.
You can find a lot of websites that explain this circuit. Just search for Schmitt trigger.
answered 1 hour ago
akshayk07akshayk07
252116
$endgroup$
add a comment |
$begingroup$
It's a comparator basically. It is a Schmitt trigger. It has a variable reference value, i.e. controlled using the R2 and R1 resistances. At the non-inverting input (using voltage divider arrangement), $$V_+ = fracR_1R_1 + R_2 * V_o$$ and at inverting input, $$ V_- = Vi $$ at the inverting terminal.
Now, output can be either $ +V_s $ or $ -V_s $ depending on whether non-inverting terminal voltage is higher or not respectively. So, the output is $beta V_s$ or $-beta V_s $ where $ beta = fracR_1R_1 + R_2 $.
If first output is in positive saturation and then $V_i$ goes above $beta V_s$, then output changes to $-V_s$. Similarly, when $V_i$ goes below $-beta V_s$, then output changes to $ +V_s$.
You can find a lot of websites that explain this circuit. Just search for Schmitt trigger.
answered 1 hour ago
akshayk07akshayk07
252116
$endgroup$
It's a comparator basically. It is a Schmitt trigger. It has a variable reference value, i.e. controlled using the R2 and R1 resistances. At the non-inverting input (using voltage divider arrangement), $$V_+ = fracR_1R_1 + R_2 * V_o$$ and at inverting input, $$ V_- = Vi $$ at the inverting terminal.
Now, output can be either $ +V_s $ or $ -V_s $ depending on whether non-inverting terminal voltage is higher or not respectively. So, the output is $beta V_s$ or $-beta V_s $ where $ beta = fracR_1R_1 + R_2 $.
If first output is in positive saturation and then $V_i$ goes above $beta V_s$, then output changes to $-V_s$. Similarly, when $V_i$ goes below $-beta V_s$, then output changes to $ +V_s$.
You can find a lot of websites that explain this circuit. Just search for Schmitt trigger.
answered 1 hour ago
akshayk07akshayk07
252116
edited 22 mins ago
answered 1 hour ago
akshayk07akshayk07
252116
answered 1 hour ago
akshayk07akshayk07
252116
answered 1 hour ago
akshayk07akshayk07
252116
252116
add a comment |
add a comment |
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I think the point is for you to work out what it does for yourself.
$endgroup$
– Finbarr
1 hour ago