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Karl Matthias 🇺🇦
@relistan@mstdn.social  ·  activity timestamp last week

@synx508 I will clean it up and put it on here this afternoon. Probably you will find something(s!) I did wrong. If so please let me know. In don’t have a scope so Qucs-S is what I used to design it. The caps to base I figured out in circuit.

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Karl Matthias 🇺🇦
@relistan@mstdn.social replied  ·  activity timestamp last week

@synx508 I should mention that the normal Soldersmoke amplifier is quite squirrelly and took a fair bit of effort for most people to stabilize it. It doesn’t decouple the power supply very well, and has no feedback. This was to keep it simple in concept. But makes it hard to build without howling and motor boating unless you do it exactly like they did.

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Gary @N8DMT
@n8dmt@mastodon.radio replied  ·  activity timestamp last week

@relistan @synx508 This is a great exchange between a person performing modeling/simulation and then building it and testing without-a-scope and a second person building and testing with a dynamic signal analyzer! Can’t imagine this magnificent interchange of technical information on any other than this platform! BRAVO! Thank you both!
#HamRadio #DIY

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Philip Bragg
@synx508@bsd.network replied  ·  activity timestamp last week

@n8dmt @relistan Thank you for making it possible, I've enjoyed making and testing the first version. The RF transistor version of this amplifier will be a bigger challenge, I think.

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Philip Bragg
@synx508@bsd.network replied  ·  activity timestamp last week

@relistan I'm not a fan of their decoupling, either on the supply or the emitters, but i've done it this way… https://bsd.network/@synx508/115536127015776752

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