BD139 Push Pull Amplifier Experiments - Part 2
Video looking at some more experiments with the BD139 based push pull RF amplifier. It covers the impact of different output transformer cores, biasing techniques and the impact of bypassing the emitter degeneration resistors. This video should be watched in conjunction with Part 3, which looks at varying the turns ratio of the output transformer.

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BD139 Push Pull Amplifier Experiments - Part 3

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BD139 Push Pull Amplifier Experiments - Part 1

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EEVblog #311 - Jim Williams Pulser Followup

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The Ruthroff Impedance Transformer

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Push-Pull Pair - Class B, Class AB and Class A operation

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RF Splitters & Combiners - How do they work?

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Building A Return Loss Bridge - #073

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Key Comparison: BaMaTech TP III vs. N0SA SP-X

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IRF530 Push Pull Amplifier - Part 2

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Build small PA output transformer

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HF Transmitter #14 - Final Power Amp

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EEVblog #306 - Jim Williams Pulse Generator

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BD139 Push Pull Amplifier Experiments - Part 4

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IRF530 Push Pull Amplifier - Part 4

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The Insane Genius of a Formula 1 Gearbox

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Integrated SSDs Should Be Illegal, But Why Would They Care!

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RF Power Amplifier Construction

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AM Radio - Part 1 Thoughts and Ideas

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Homebrew RF Power Amplifier: Part 3 Ferrite Rod versus Binocular Cores

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