Category Archives: references

Triplett 3212 “Tube Analyser”, Tube Tester

Other updates are the replacement of the copper oxide rectifier with a silicon rectifier (1N4007), and replacement of the old paper cap with a polyester capacitor of the same 0.1 microfarad capacitance at 630 WVDC. The copper oxide rectifier is safer than selenium, but still has significant reverse bias leakage, the silicon diode has much less leakage, so a significant upgrade to performance. Continue reading

Posted in Project, references, Stereo amps, Tester repair, Tube tester repair, updating tube tester | Tagged , , , , ,

This may sound a little odd for a blog not aimed at making money, but…

So if trigonometry is not your strong point, and even if it is, you will find it potentially useful.

And while my aim of this blog is not to be commercial, sometimes there are companies out there you just have to raise the coffee mug and give them a nod of appreciation. This is just one of them, I only wish there were more.
Continue reading

Posted in Coffee makers, Espresso, Homebrew, references, Uncategorized | Tagged

Salvaging Parts: Some Strategies.

It was cost effective from the standpoint that for power consumed, plus my investment on the gun and an estimated value of parts amortized over one hour was worthwhile (no excel spreadsheet for those wishing to see the documentation, but I suggest trying it yourself.), versus the power consumed to attempt removal, the power required, etc- the heat gun won by a landslide. Continue reading

Posted in Alternative Energy, bread boardiing, dead bug, Homebrew, Project, references, Solar power, Uncategorized

Making CFL’s and LED lights work on PIR systems

What this resistor does is to replace the resistance that was the incandescent filament. Continue reading

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More on the Capacitive Charger

Mind you- the Capacitive charger is a slightly different beast, but you can use the Application Note as a reference to refine the charger and normalize the concept of the capacitive charger. The importance being the calculations. The real notable difference is as a battery charging circuit, the battery is both a load and a capacitance in the circuit, so there is no need for the 470 microfarad capacitor or the zener diode that are shown in the Application Note. The equations provided will also allow for a bit of optimization and also allow those on 50 Hertz/250 volt standards to modify the charger a bit closer to optimal for their area of the world. Continue reading

Posted in Alkaline Charging, Battery charger, Capacitive charger, Capacitor charger, Charge Controllers, charger, Project, references, Reverse Current charger, Uncategorized | Tagged , , , , , , , , , | 2 Comments

Some useful references I have found over the years and some useful notes

…but perhaps most important are the Data sheets, Application Notes and “Suggested designs” from the manufacturers themselves. Sometimes sample circuits are presented in the Data sheets, otherwise look to Application Notes. Some of the Application notes are even compiled into a book in such a way that the book could be used as a textbook… Continue reading

Posted in bread boardiing, breadborads, dead bug, flashing, flashing a generator, generator, Homebrew, how to fix generator that eill not charge, Prestolite, Project, Reference books, references, Uncategorized | Tagged , , , , , , , , , , , , ,