Active Filters
#active filter
#low-pass filter
#high-pass filter
#band-pass filter
#op-amp
#signal processing
#frequency response
#analog circuit
#filter design
#electronics
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Single Input to Differential Input Adapter for Digital Voltmeter
In some cases, a differential input is needed for voltage measurement. By using a single operational amplifier, it is possible to construct an adapter that provides a floating voltage reference.
To achieve a differential input for voltage measurement using an operational...
Op-Amp Application: Voltage Comparators
Two reasons why the LM101 is well-suited for comparator applications are its large differential input voltage range and the ease of clamping the output.
The LM101 operational amplifier is particularly advantageous for use in comparator circuits due to its significant differential...
Interpolating Scanner Circuit
This design is for an interpolating scanner, a circuit featuring multiple signal inputs, a control voltage input, and a signal output. The output selectively transitions between inputs, smoothly fading from one to the next as the control voltage increases. A...
Common low-pass filter circuit b
A common low-pass filter circuit is illustrated. Figures (a) to (c) demonstrate its ability to suppress high-frequency interference, while Figure (b) shows a varistor that can absorb lightning surge voltage. Figure (d) indicates the circuit's capability to suppress low interference,...
Norton-amplifier
The non-inverting amplifier has a gain of R2/R3 (1 in this case) and produces a voltage of V during a positive excursion of Vin with respect to ground. The inverting amplifier accommodates the negative excursions of V; its gain is...
Multiple-feedback bandpass filter
The operational amplifier (op amp) is configured in inverting mode. Resistor R3 connects the output to the inverting input, establishing the gain and the current through the frequency-determining capacitor, C1. Capacitor C2 provides feedback from the output to the junction...
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...
op amp Why the resistor in this op-amp circuit
Here is a circuit diagram for a signal response test circuit from the specification sheet for a HA-5195 operational amplifier. It appears to be a non-inverting amplifier circuit with a gain of 5, along with a 200-ohm resistor connecting Vout...
Simple Op-Amp Radio
The following schematic illustrates the Simple Op-Amp Radio Circuit Diagram sourced from bowdenshobbycircuits.info. This Simple Op-Amp Radio essentially functions as a crystal radio.
The Simple Op-Amp Radio Circuit utilizes an operational amplifier (op-amp) to enhance the performance of a basic crystal...