Signal Sources and Amplifiers
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Revision as of 09:56, 25 March 2013 by Boris (Talk | contribs) (Created page with "==Introduction== In order to record an experimental signal with high fidelity 3 issues need to be considered. *Type of Signal to be measured *Characteristics of the signal s...")
Introduction
In order to record an experimental signal with high fidelity 3 issues need to be considered.
- Type of Signal to be measured
- Characteristics of the signal sources
- Type of Amplifier used to record the signal
Signal Types
There are 6 types or classes of electical signal sources which occur in various experimental situations. It is important to understand the characteristcs of these signal sources in order that they can be matched to the correct amplifier/recording system without degrading the contents of the signal source.
These 6 classes are listed and discussed below:
- Single ended - Floating
- Single ended - Grounded
- Single ended - Grounded with Common mode voltage
- Balanced - Floating
- Balanced - Grounded
- Balanced - Grounded with Common mode voltage
Source Characteristics
- Source Impedance
- Source Voltage
- Source Frequency content
Amplifier types
- Single ended - Grounded
- Single ended - Isolated
- Balanced - Grounded
- Balanced - Isolated
