Archive for the ‘Electronic Components’ Category:

2021-09-14 PC Boards Too Cheap To Repair

Fron FB group pictures of electronic… Joshua E. Hrouda Yeah, where I worked, the PCBs were reworked and the bad chips replaced. But that was 1980. Nowadays the PCBs are populated at the same factory where the boards are made, because everything is automated and almost no labor makes them cheap. The boards may have

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2021-08-25 LED Streetlights Are Killing Moths In England

LED streetlights are decimating moths in England. The LEDs have blue light which insects use to see. The moths are pollinators like bees plus they’re food for many animals. There are a number of solutions for mitigating the problem. The blue light can be filtered out, among other things. My thinking is that the streetlights

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2021-07-25 Supercapacitors Have 1000X Lithium-Ion Life

Supercapacitors have 1000 times more life than lithium-ion batteries – Dr Akshay Singhal, Founder, Log 9 Materials . https://www.financialexpress.com/auto/industry/interview-dr-akshay-singhal-founder-log-9-materials-supercapacitors-have-more-life-than-lithium-ion-battery-2-and-3-wheeler-ev-battery/2296561/lite/

2021-07-08 FTC Stops Broadcomm’s Monopolism

Federal Trade Commission said Broadcomm bullied its customers into exclusive contracts in order to buy Broadcomm chips. https://arstechnica.com/tech-policy/2021/07/broadcom-is-a-monopolist-ftc-orders-chipmaker-to-stop-illegal-tactics/?amp=1

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2021-06-12 First Commercial Semiconductor Device

Q: What was the first commercially successful semiconductor device? Hint: It wasn’t germanium. https://en.m.wikipedia.org/wiki/Henry_Harrison_Chase_Dunwoody

2021-05-11 Power Supply Protection Diodes

First off, *all* power supplies should have what this one has. A high current diode across the output jacks, cathode or banded end to positive. This is to protect the output from reverse voltage. A high current diode across the 2N3055 pass transistor, cathode or banded end towards the collector. This protects the transistor from

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2021-05-06 Farming With Salty Water

The farm land that has salt can be used to grow vegetables. 2.1 minute YouTube video. https://youtu.be/sspt-evxL0Q

2021-02-25 Set Blows Out Substitute Diodes

From FB group I take … Alejandro Cruz He said a diode is a diode but there are more than volts and current. The reverse recovery time is important. If it is rectifying 50 or 60 Hz AC then standard recovery time is good. If it’s rectifying high frequencies then it should be fast recovery

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2021-02-08 IEEE.ORG Website Is Not Private. Intersil ICL 8038 Function Generator

Chrome won’t allow me to connect to the spectrum.ieee.org website because it’s saying it’s not private. I go to learn more and they don’t have any way to override the error message. I went here first to read the story and tried the link at the end to comment. https://spectrum.ieee.org/tech-talk/tech-history/silicon-revolution/decoding-the-innovation-delusion-nurturing-the-maintenance-mindset They asked in an article

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2020-10-29 Freq Counter – Crystal Tester Mod For Low Frequencies

I got this frequency counter and crystal tester mainly for the frequency counter. Today I decided to test a few crystals, and was successful with ones above 10 MHz but not at 4 MHz. The two capacitors labeled C2 and C3 are the feedback to the crystal, and they were originally 22 pF. So I

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