[SOLVED] - op-amp attenuating the signal - Forum for Electronics
2014年6月30日 · Non-Inverting topology: G=1+Rf/Rin (gain is always positive) Inverting topology: G=-Rf/Rin (gain is always negative) In the case of negative feedback G can be set to be more then 1, in this case it will amplify the input until it will clip the output, and when G is less then 1, it will act as attenuator and will scale down the input, the ...
Non inverting amplifier using OPAmp LM358 - Forum for Electronics
2009年6月29日 · I constructed non inverting DC amplifier using 1/2 LM 358 with a gain of 10 employing the standard circuit. It does work at single supply of 5 V. Every thing is fine if the output levels are less than 3 V approximately. The output never exceeds certain value that …
[SOLVED] Noninverting Opamp Configuration for Gain Less Than 1
2012年7月31日 · Hello everyone. The gain for a regular noninverting opamp configuration is [ 1 + ( Rf / Ri )] . This means that the output voltage will always be greater than or equal to the input voltage. But can we have a noninverting opamp configuration in which the gain is …
What is the offset in an Op-Amp? | Forum for Electronics
2008年6月22日 · Usually the offset voltage is considered as a voltage source added to the non-inverting input, and can be either polarity. So if you grounded the resistor at the inverting end, it will look like an non-inverting opamp with Vos (offset voltage) added as the input, your output voltage should be Vout = (1 + Rf/R1)*Vos
NON-Inverting OPAMP (Pole zero) - Forum for Electronics
2003年10月26日 · My simulations agree with the calculated values from the site I show above for a “Non –inverting” op amp. I am able to obtain a 160 kHz BW and 48 deg PM using the compensation network in figure 1.
Non-inverting Op Amp Differentiator circuit - Forum for Electronics
2008年11月20日 · I tried using the conventional inverting op amp differentiator circuit but my circuit has not negative supply voltage. So the differentiator output is not correct. I need a circuit that perform a non-inverting differentiation task using only positive power supply rail and produce a square-wave output have either positive value or 0V.
How does an op amp "see" the feedback voltage?
2022年10月11日 · The answer is simple: There are two currents which meet in the node which belongs to the inverting opamp node: (1) The current driven by the input signal voltage and (2) the current driven by the opamps output voltage Vout (voltage source …
Can you step down voltage using Op Amp? - Forum for Electronics
2007年9月25日 · If you want a gain <1 you have to use the opamp in the inverting configuration : Vout=-G.Vin If you want a gain >1 you connectt your input at the non inverting input of the opamp and then Vout=(1+G).Vin But don't forget that opamp are designed to work on signals, you shouldn't use them to create a power rail.
What is the maximum frequency that 741 Op-Amp ... - Forum for …
2006年12月14日 · ac coupled opamp If you have a 741 circuit with a nominal gain of 100 at midband and no other reactive components that affect the frequency response, (like capacitors in the feedback loop) you can expect the gain to start to fall with rising frequency and be 3dB down at 15KHz, it will continue to fall with rising frequency at about 6dB per octave, so it will be 9dB …
How to convert sine wave into square wave using op-amp
2010年5月17日 · In order to convert a sine wave into a square wave you only have no use an Opamp (like IC-741) using a non-inverting amplifier circuit with a very large gain. The very large gain willl make the circuit saturate quickly, transforming your sine into a square. This site has exactly what you need: