Archive for the ‘Electronic Components’ Category:

2022-01-22 LED Xmas Light String Repair

A string of LED xmas lights had been fritzing on and off, then it finally failed. I had to pull out 4 lights before I found two that were dead. I had to file off the ridge around the base to get them to fit properly into the base. So it’s back working again. It

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2021-12-22 E.I.A Resistor Color Code

2021-12-06 MP3 Player To FM Radio Link (Mono)

MP3 Player To FM Radio Link (Mono) This circuit allows you to play your MP3 or any stereo audio source into a mono signal for reception on an FM radio. It has no antenna and has a range of a dozen or so meters. It operates off a 6 volt rechargeable Ni-MH battery pack but

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2021-11-23 Replace Germanium With Silicon Transistors

I also remember those projects that used the CK722 and 2N107. The last few years I have been repairing older transistor radios with germanium transistors. I have had a few of them with bad germanium output transistors, and I’ve replaced them with silicon PNP transistors, along with a change in base bias resistors. They work

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2021-11-12 5 Transistor ESR Meter – EEVBlog

This is a 5 transistor ESR meter for testing capacitors. https://eevblog.com/forum/projects/5-transistor-esr-meter-design/

2021-09-28 Qualcomm CEO’s Chip Shortage Opinion

Almost 3 minute video. https://youtu.be/6K_9dQlI5sI

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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