Electronics
Tektronix 570 Curve Tracer
Transcript 0:01sometimes life is well unpredictable and0:09sometimes things just seem to be the way they work supposed to be what you see on0:18the screen is a trace of a pentode0:24vacuum tube it is being displayed on a0:30Tektronix model 570 characteristic curve0:36tracer so what do those two have how do I know what time that was … Read more
Vacuum Tubes in 2025 – Not Made in America
Vacuum Tubes in 2025 – Not Made in America As of 2025, the biggest suppliers of vacuum tubes (new production) are a small group of manufacturers — nearly all based in Russia, China, and Slovakia — with a few large retail distributors worldwide. Here’s a breakdown: Top Vacuum Tube Manufacturers 🇷🇺 Reflector (Saratov, Russia) – … Read more
The Yin-Yang Audio Amplifier Test
The Yin-Yang Audio Amplifier Test Regarding stuff like this https://www.bing.com/videos/riverview/relatedvideo?q=”HI-Res”+tube+car+amp I’m wondering if anyone has accomplished tests in which the positive lead of the speaker is driven by Primary Amp Under Test (PAUT) while the negative lead of the speaker is driven by the Secondary Amp Under Test (SAUT), both amplifiers being fed the same … Read more
Capacitors vs Sound Quality Deep Dive – Effects of Capacitor Materials and Construction on Signal Quality and Audio Performance
Capacitors vs Sound Quality Deep Dive – Effects of Capacitor Materials and Construction on Signal Quality and Audio Performance https://www.youtube.com/results?search_query=capacitors+sound+quality A deep dive into how various capacitor materials and constructions audibly and measurably affect audio and signal quality. This includes both objective measurements (like THD, TIMD, slew rate, inductance, etc.) and subjective perception from the … Read more
An examination of how power supply design affects audio circuitry and ultimately sound quality
An examination of how power supply design affects audio circuitry and ultimately sound quality Great. I’ll conduct an in-depth investigation into how power supply design affects audio circuitry and ultimately sound quality, considering both objective performance and subjective perception. This will include foundational and recent research, and apply to all categories of audio equipment, from … Read more
Telephone Power Plants
Telephone Power Plants An interesting technical explanation of how and why the phone system went down immediately following broadcast of JFK shooting. Commenter notes same effect after Elvis death. As an electrical engineering student in the early 1990’s I went on a field trip to visit a telephone exchange. We were shown into a huge … Read more
“Chinese Cheap” – Stupidity and Sabotage disguised as Progress – Beware ChatGPT also Saboteur against reality
“Chinese Cheap” – Stupidity and Sabotage disguised as Progress – Beware ChatGPT also Saboteur against reality It is important to be plain and clear…and accurate. Panasonic exited the cap market. It was both an overall cheapening — at the expense of all customers — and it was also a sabotage attempt that actually worked. The … Read more