---
title: Venable Instruments Blog | Wayne H. Tuttle
description: Wayne H. Tuttle | Insights and perspective about testing and measurements using Frequency Response Analyzers from Venable Instruments.  Topics include feedback loops, phase and gain margins, load impedance, stability and bode plots.
---

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*By Ford Mays - April 13, 2021*

#### Tuttle's Topics #5 - Summary

# Tuttle’s TopicsThis is the final installment of a multi-part series of blogs that discusses...

[Read More](https://www.venableinstruments.com/blog/tuttle-topic-5)

![iStock-157336072](https://www.venableinstruments.com/hs-fs/hubfs/Web%20Images/iStock-157336072.jpg?width=150&name=iStock-157336072.jpg)

#### Distributed Power: What Causes These Systems to Oscillate

Distributed power systems can oscillate, especially when driving one power supply with another power supply. Download this white paper to learn what causes distributed power systems to oscillate and how you can prevent oscillation.

[![Download White Paper](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/4867466/c465cf6b-2e2f-4e22-815a-9cfde777e54f.png)](https://hubspot-cta-redirect-na2-prod.s3.amazonaws.com/cta/redirect/4867466/c465cf6b-2e2f-4e22-815a-9cfde777e54f)

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*By Ford Mays - March 02, 2021*

#### Tuttle's Topics #4 Closing the Loop - Feedback Circuits

](https://www.venableinstruments.com/blog/closing-loop-feedback-circuits)

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*By Ford Mays - January 06, 2021*

#### Closed Loop Performance - Tuttle's Topics #3

](https://www.venableinstruments.com/blog/tuttle-3)

[

*By Ford Mays - November 03, 2020*

#### Measure and Know Your Plant - Tuttle's Topics #2

](https://www.venableinstruments.com/blog/tuttles-topics-2)

[

*By Ford Mays - October 08, 2020*

#### Tuttle's Topics

](https://www.venableinstruments.com/blog/tuttles-topics)

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Venable provides scalable energy storage and power systems test solutions for precise voltage, current, and frequency measurements, partnering with engineers to ensure battery and power systems around the world will meet stringent field performance demands. 

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**Venable Training - Stabilizing Power Supply Control Loops**

 20 August 2025 

](https://www.venableinstruments.com/blog/stabilizing-power-supply-control-loops) [![The Ins and Outs of System Level Input/Output Impedance Measurements](https://www.venableinstruments.com/hubfs/Imput%20Impedance%20Test%20Set%20UP.jpg)

**The Ins and Outs of System Level Input/Output Impedance Measurements**

 23 June 2025 

](https://www.venableinstruments.com/blog/impedance-measurements)

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