active filter circuit
#active filter
#op-amp
#low-pass filter
#high-pass filter
#band-pass filter
#signal processing
#analog circuits
#frequency response
#filter design
#electronics
No description available.
Low-Cost Quad Op Amp Drives RF Modulator
The video circuit depicted in Figure 1 integrates an audio-subcarrier notch filter and group-delay equalization in accordance with the ITU-470 standard. It features an amplitude-adjustment capability suitable for driving an RF video modulator in NTSC applications, with minor adjustments needed...
Audio Circuit(BassMidTreble)
The circuit design involves a circular operational amplifier (op-amp) configuration that functions as a second-order low-pass and high-pass filter. The low-pass filter operates within a frequency range of 20 to 250 Hz, while details regarding the high-pass filter are not...
Active Fourth-Order Low-Pass Filter Circuit
This circuit is a fourth-order low-pass filter designed for operation at kilohertz frequencies. The component values for resistors R1, R2, and capacitors C1, C2, as well as resistors R3, R4 and capacitors C3, C4 can be adjusted for functionality at...
Op-Amp Microphone Preamp
A high-quality microphone preamplifier utilizing a single power supply, suitable for both dynamic and electret microphones. The operational amplifier (op-amp) employed can be any low-noise, high-performance type, such as the NE5534, TL071, or OPA 371. The schematic illustrates the configuration...
Guitar Control
The IC1A operational amplifier is configured as an inverting amplifier, with its gain determined by a three-way switch that connects different resistor values in parallel to resistor R4. This input stage is succeeded by an active three-band tone control stage,...
capacitor values for non inverting op amp circuit
All the capacitors are present to block DC signals; however, the values of capacitance are crucial, and it is necessary to determine the value of Co. Rin denotes the source resistance, which is not an integral part of the amplifier...
Guitar Control
The IC1A operational amplifier is configured as an inverting amplifier, with its gain determined by a three-way switch that connects different resistor values in parallel to R4. Following this input stage is an active three-band tone control circuit, designed to...
Current-collector head-amplifier
To amplify small current signals, such as those from an electron collector inside a vacuum chamber, it is beneficial for reasons related to noise and bandwidth to utilize a "head amplifier" connected to the chamber. The operational amplifier N1 is...
Bridge Circuit With One Power Supply
For systems with a single power supply, two operational amplifiers function as instrumentation and buffer amplifiers. The OPA111 AM buffers the reference mode of the bridge and applies that voltage to the reference terminal of the instrumentation amplifiers. The output...