# What is a bridge in electronics?

A bridge circuit is a topology of electrical circuitry in which two circuit branches (usually in parallel with each other) are “bridged” by a third branch connected between the first two branches at some intermediate point along them.

Simply so, why Schering bridge is used?

The Schering Bridge is an electrical circuit used for measuring the insulating properties of electrical cables and equipment. It is an AC bridge circuit, developed by Harald Schering. It has the advantage that the balance equation is independent of frequency.

What are the uses of a Wheatstone bridge?

The Wheatstone bridge is used for measuring the very low resistance values precisely. Wheatstone bridge along with operational amplifier is used to measure the physical parameters like temperature, strain, light, etc.

What is meant by dc bridge?

The DC bridge is an electrical circuit for the precise measurement of resistances. The best known bridge circuit is the Wheatstone bridge, named after Sir Charles Wheatstone (1802 – 1875), an English physicist and inventor.

## What is a diode bridge?

A diode bridge is an arrangement of four (or more) diodes in a bridge circuit configuration that provides the same polarity of output for either polarity of input.

## What is mesh analysis?

Mesh analysis (or the mesh current method) is a method that is used to solve planar circuits for the currents (and indirectly the voltages) at any place in the electrical circuit. Planar circuits are circuits that can be drawn on a plane surface with no wires crossing each other.

## What is Wien’s bridge?

The Wien bridge is a type of bridge circuit that was developed by Max Wien in 1891. The bridge consists of four resistors and two capacitors. Wien’s bridge is used for precision measurement of capacitance in terms of resistance and frequency. It was also used to measure audio frequencies.

## What is null detector?

A null detector is one that functions to identify when a given value is zero. Comparators can be a type of amplifier distinctively for null comparison measurements. It is the equivalent to a very high gain amplifier with well-balanced inputs and controlled output limits.

## What is de sauty bridge?

De Sauty Bridge measures an unknown capacitance in term of a standard capacitance i.e. comparing two capacitance’s Two ratio arm of this bridge consist pure resistor and two consist capacitor where one is of known value and another is standard capacitor.

## What is the use of Schmitt trigger?

In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal.

## What are some of the applications of comparators?

Comparator Circuit Working and Applications. Generally, in electronics, the comparator is used to compare two voltages or currents which are given at the two inputs of the comparator. That means it takes two input voltages, then compares them and gives a differential output voltage either high or low-level signal.

## What is a comparator circuit?

A comparator circuit compares two voltages and outputs either a 1 (the voltage at the plus side; VDD in the illustration) or a 0 (the voltage at the negative side) to indicate which is larger. Comparators are often used, for example, to check whether an input has reached some predetermined value.

## What is the window detector?

A window detector circuit, also called window comparator circuit or dual edge limit detector circuits is used to determine whether an unknown input is between two precise reference threshold voltages. It employs two comparators to detect over-voltage or under-voltage.

## What is the use of zero crossing detector?

A zero crossing detector or ZCD is a one type of voltage comparator, used to detect a sine waveform transition from positive and negative, that coincides when the i/p crosses the zero voltage condition. The applications of Zero Crossing Detector are phase meter and time marker generator.

## What is an open collector?

Instead of outputting a signal of a specific voltage or current, the output signal is applied to the base of an internal NPN transistor whose collector is externalized (open) on a pin of the IC. The emitter of the transistor is connected internally to the ground pin.

## What is the use of pull up resistor?

Pull-up resistors are used in electronic logic circuits to ensure that inputs to the arduino settle at expected logic levels if external devices are disconnected or high-impedance. ‘Just because you have nothing at all connected to an input pin doesn’t mean it is a logical zero.’ Pull Up Resistor.

## What is an open collector relay?

The output of the open collector has changed states, and this change in state can then be used to trigger the automation/security system, logic system, or energize the coil of a relay. “Pull to ground” and “current sink” are other terms used to describe the open collector circuit.

## What is a push pull output?

A push–pull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a connected load. DC current is cancelled in the output, allowing a smaller output transformer to be used than in a single-ended amplifier.

## What is meant by open drain?

Glossary Term: Open-drain. Definition. An open-drain or open-collector output pin is driven by a single transistor, which pulls the pin to only one voltage (generally, to ground). When the output device is off, the pin is left floating (open, or hi-z).

## What is meant by current sink?

References to sink and source current are made relative to the current switching device inside the system. In most cases, that’s a simple transistor. Source current refers to the ability of the digital output port to supply current. Sink current refers to the ability of the port to receive current.

## What is a weak pull up resistor?

A low resistor value is called a strong pull-up (more current flows), a high resistor value is called a weak pull-up (less current flows). The value of the pull-up resistor needs to be chosen to satisfy two conditions: When the button is pressed, the input pin is pulled low.

## What are the applications of Wheatstone bridge?

The Wheatstone bridge (or resistance bridge) circuit can be used in a number of applications and today, with modern operational amplifiers we can use the Wheatstone Bridge Circuit to interface various transducers and sensors to these amplifier circuits.

## What does it mean for a bridge circuit to be balanced?

A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component.

## What is a Wheatstone bridge used for?

The Wheatstone bridge is used in two ways: (1) to measure the value of an unknown resistor by comparison to standard resistors, and (2) to detect small changes in a resistance transducer (e.g. thermistor).

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