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Entry  Sun Aug 11 01:22:04 2019, Shalika Singh, Noise Budget, 2micronLasers, Noise Analysis of voltage regulator using SR785 Spectrum Analyser regulator.pdfNoise_across_Voltage_Regulator_Circuit.pdf
    Reply  Sun Aug 11 14:35:41 2019, Koji, Noise Budget, 2micronLasers, Noise Analysis of voltage regulator using SR785 Spectrum Analyser 
       Reply  Sun Aug 11 19:15:32 2019, Shalika Singh, Noise Budget, 2micronLasers, Noise Analysis of voltage regulator using SR785 Spectrum Analyser 
          Reply  Sun Aug 11 22:34:50 2019, Koji, Noise Budget, 2micronLasers, Noise Analysis of voltage regulator using SR785 Spectrum Analyser 
Message ID: 2386     Entry time: Sun Aug 11 01:22:04 2019     Reply to this: 2387
Author: Shalika Singh 
Type: Noise Budget 
Category: 2micronLasers 
Subject: Noise Analysis of voltage regulator using SR785 Spectrum Analyser 

A comparison between the types of voltage regulators was done in order to know which should be preferred to provide a clean bias supply.

Attachment 1: The Circuit Diagram of the voltage regulator 

Tere are 3 types of voltage regulators that were tested. 

a. LM317

b. LM7915

c. LM7815

Attachment 2: Output Voltage noise of all 3 voltage regulators

A voltage of 12V(+/-) was provided using SR560 to the respective input of the regulator IC and the output noise across each were measured using the SR785.

LM317 will be a better choice to make a voltage regulator for the circuit mentioned in elog entry 2381.

Attachment 1: regulator.pdf  214 kB  Uploaded Sun Aug 11 02:27:20 2019  | Hide | Hide all
regulator.pdf
Attachment 2: Noise_across_Voltage_Regulator_Circuit.pdf  123 kB  Uploaded Sun Aug 11 02:27:43 2019  | Hide | Hide all
Noise_across_Voltage_Regulator_Circuit.pdf
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