[sdiy] Vibe Circuit Design

[Terry Bowman]

> On Jan 25, 2026, at 6:17 AM, Ingo Debus via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> Reversed the +15 V and the -15 V supply of a 741 (by mistake). Bang!🤯

Reversed -15V and Gnd once. Blew all of the 4136s but the 741 survived.


> On Jan 25, 2026, at 1:25 PM, Oren Leavitt via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> I'll bet the transformer made a wonderful harmonic rich buzz before that 
> poor bridge rectifier blew.

Then there was the line extender famous for melting the magnet wire in an expensive square wave transformer. Some genius put the fuze AFTER the bridge.

You can’t blame myself for that design mistake. I can’t remember if it was Sylvania or Scientific Atlanta.  8D


Terry Bowman, KA4HJH
"The Mac Doctor"

https://www.astarcloseup.com

"I’ve seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near Tannhäuser Gate. 

"All those moments will be lost in time like tears in the rain."— Roy Batty, Blade Runner



Terry Bowman, KA4HJH
"The Mac Doctor"

https://www.astarcloseup.com

“...the book said something astonishing, a very big thought. The stars, it said, were suns but very far away. The Sun was a star but close up.”—Carl Sagan, "The Backbone Of Night", Cosmos, 1980


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