Description:
Fixing electronic equipment.
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Dr. Ronald Federici: A Tribute
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Dr. Ronald Federici constantly receives accolades for his work with orphans. [link] Il mittente di questo messaggio|The sender address of this non corrisponde ad un utente |message is not related to a real reale ma all'indirizzo fittizio|person but to a fake address of an... more »
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Digital Projector Filters-DIY?
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"Off-brand" digital projector bulbs are much cheaper than OEM, but they don't generally come with air filters. Does anyone know of a cheap source, or perhaps what type of foam to use to cut your own?
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Coax cable used for DC instrumentation
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Hello, I am working with an instrument which outputs 0-5mV, and that signal has to reach a sensing device 35' away. I am concerned with noise, and I don't think shielded cable will work well enough. So I am considering using coax cable. But I don't understand coax. There are numerous "RG" ratings and ohm ratings. Suppose I used RG62 with 50... more »
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Charging Portable MP3 Player (Not IPod)
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Hi, This "problem" with the MP3 player may have been a "fluke". I went into "system tools" and activated a "reset". When I tried to play music, it presented a "refresh" option, which I did. I found technical information on the web about charging an IPOD/MP3 player. This time I set the current... more »
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Zeners in series...
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Hey there, could somebody take a quick look at this circuit and try to explain me what's the purpose of the 2 zeners near the interrogative point ? Here's the schematic: [link] If they are working as voltage stabilizer, shouldn't there be a resistor between them and the rectifier??... more »
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