# What is the input resistance of a typical oscilloscope input?

## What is the input resistance of a typical oscilloscope input?

Key Oscilloscope Specifications

Characteristic Value
Resolution 8-bit
Vertical sensitivity 2mV/div – 5V/div
Time base 2ns/div – 50s/div
Input Impedance 1 MΩ ±3% || 16pF ±3pF

### What is the input impedance of an oscilloscope?

The input impedance of an oscilloscope is a complex quantity which can be represented by a resistance in parallel with a capacitance between the scope input terminal and the ground. The impedance is thus frequency dependent.

Does oscilloscope have resistance?

DMMs usually have as high an input resistance as possible, given their overvoltage protection, which manufacturers usually set around 10M (but can be much higher for high-end devices). It depends on the scope and the multimeter.

What is the input impedance of an emitter follower?

The input impedance of the emitter follower is found as the parallel equivalent resistance of the base resistors and the transistor input impedance. The output impedance is the impedance that the circuit presents to its load.

## How to find the incremental resistance of an emitter?

Find the incremental input resistance of an emitter-follower with the following transistor parameters and bias conditions: collector current IC = 1 mA, emitter resistor RE = 10 kΩ, small-signal current gain hfe = 100, and base-width modulation factor η = 10 −4. Solution: We find the small signal parameters as follows:

### How is the input and output of a common emitter amplifier related?

Common emitter input output phase relationship The common emitter transistor amplifier is the only configuration that gives an inversion, 180°, between the input and output signals. The reason for this can be seen from the fact that as the input voltage rises, so the current increases through the base circuit.

What happens when the emitter is lower than the collector?

In the common base configuration, the emitter is the input and the collector is the output. If we lower the emitter resistor resistance, more current would (according to my reasoning) somehow bypass the second capacitor.. And higher the voltage across the resistor, higher the input to the amplifier and therefore higher amplified output.

What is collector load resistor in common emitter amplifier?

This is the collector load resistor within the common emitter amplifier. This resistor in the common emitter amplifier provides a measure of DC feedback to ensure that the DC conditions within the circuit are maintained. These capacitors provide AC coupling between stages.