This is evident in the special case where R1 and R2 are equal. The input signal is applied to this inverting pin through a resistor (R1). In this configuration, the output is fed back to the negative or inverting input through a resistor (R2). For instance, the output of a sensor must be amplified in order to have the ADC measure this signal. The primary goal of an operational amplifier, as its names states, is to amplify a signal. Thus, Vout depends on R1 and R2 and not on load value. To solve this issue, an amplifier between the load and the voltage divider (see figure below) is inserted. Indeed, the load impedance can have large variations, so Vout voltage can change dramatically, mainly if the load impedance has a value of the same magnitude as R2. The figure below is based on a voltage divider, and the circuit cannot function. This is useful to interface logic levels between two components or when a power supply is based on a voltage divider. This circuit allows for the creation of a very high impedance input and low impedance output. As the voltage output is equal to the voltage input, students might become puzzled and wonder whether this kind of circuit has any practical application. For general setup questions, 'how tos', specifications and what-connects-to-what etc., please use /r/solar.The most basic circuit is the voltage buffer, as it does not require any external components. Solar Ask here if designing or repairing your own electronic control circuits. Household electrical wiring, connectors and fittings: /r/electricians and /r/led (for room lighting). Home audio repairs especially for vintage gear: /r/audiorepair : /r/CarAV, /r/CarModification, /r/Cartalk,Ĭomputers: /r/TechSupport. Hifi hookup and buying advice: /r/BudgetAudiophile/Ĭar/Vehicle: Lighting, audio, wiring, fixing etc. General electrical eng.: /r/AskEngineers, /r/ElectricalEngineering/ Starting Electronics: /r/StartingElectronicsĪrduino, Raspberry Pi and Embedded: /r/Arduino, /r/raspberry_pi or /r/RASPBERRY_PI_PROJECTS, /r/embedded, /r/esp8266, r/esp32īroader ECE (Electrical and Computer Eng.): /r/eceĬommercial (buying, selling, consulting jobs): /r/ElectronicsList Radio, rf, antenna design/theory questions and software-defined radio: /r/rfelectronics, /r/AmateurRadio, /r/GNURadio, /r/RTLSDR Some other subreddits focus on specific electronics/electrical-related topics and may be a better first place for your question:Įlectronics Design - specialist subredditsĪudio construction: /r/diysound (active moderation) and/or /r/diyaudio (no moderation)Įlectronic musical instruments design and repair: /r/SynthDIY, r/MusicElectronics/, /r/diypedals/ Many common questions are answered in the FAQ so do check it out: - Click HERE for our FAQ/Wiki - Related subreddits "How can I take high voltage measurements with my oscilloscope?" "How do I calculate the bandwidth of an amplifier?" "Why doesn't my Op-Amp circuit work as expected?" "Trying to locate a replacement for a blown MOSFET" "Jokey" comments that don't materially contribute to the topic may be deleted. Read the sidebar and our Wiki/FAQ BEFORE posting! The post title should summarize the question clearly & concisely.Įxtra rules apply to questions on vehicle electronics - please read before posting. Please READ THIS too - especially before posting that parts 'look OK'. TV Repair / replacing electrolytic capacitors Off topic questions, and those fully answered in the Wiki, may be removed.
#Understanding rf circuits with multisim 10 mods#
Not sure if your question is on topic? Ask the mods before posting. advice for 'electronic' goods (audio, TV, computers, phones, battery chargers, domestic appliances etc.) - use: /r/appliancerepair, /r/electrical, /r/electricians, /r/askanelectrician, /r/techsupport etc.Ĭareer or certification advice - please post in /r/ece LEDs), appliance repairs & advice.īuying and general tech. A subreddit for practical electronic engineering questions: Circuit and electronic component theory, component-level circuit design & repair, buying components, test gear and tools.Ĭommercial stuff (selling, paid work etc.) - see /r/ElectronicsList/ - Click HERE for our FAQ/Wiki -Įlectrical installation work and parts, home lighting (inc.