Free Simple Circuit Diagram
This is Low-, Band-, and High-Pass Single Supply Multiple Feedback Filter circuit. This circuit uses MFB topology, which has some advantages and disadvantages. The advantages of MFB topology are low cost, easy to implement and very versatile. The disadvantage of MFB topology is it has complex calculation. This circuit uses a unity gain Butterworth, so the circuit will give a […]
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This is a 1st order ALL pass filter circuit. All frequencies are allowed at the same gain by this circuit. Here is the schematic diagram of the circuit: We can change the signal’s phase using this circuit. This circuit can be used to correct the phase of the signal as well. At F(90) this circuit has a 90° phase shift. […]
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This is a third order low pass filter that has corner frequency of 20kHz. It is twice as high as the auto-zero clock frequency. Here is the circuit : The input signal operation is allowed to across its entire gain bandwidth because intermodulation and aliasing noise are highly attenuated. This circuit also has rail-to-rail drive capability provided by amplifier’s output, […]
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This is single op-amp tone control circuit. This circuit is a hybrid low-pass, high pass and one-pole circuits with attenuation and gain. This circuit is the solution for limits cost because it requires a minimum component. Here is the circuit : For the tone adjustments, the midrange frequency is 1 kHz. It gives about ±20 dB of cut and boost […]
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