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I don't know why it is that on decent generators, they don't have throttle control based on a 60 Hz feedback loop and voltage output adjusted by field current on the generator. It's always been a project I've wanted to pull off if I had a decent generator system to work with ..... e.g., a rebuilt V...

My idea uses only one potentiometer. It works like a "balance" control in a stereo. Both signals should first be fed through a 10K resistor, so you need a couple of resistors. Both resistors are wired to the end terminals of a linear 100K pot. The wiper of the pot is grounded. The outputs ...

B&S engines cover a large range of quality. B&S engines are all still flat heads, right? 1920's technology. There are those good ones with steel cylinder liners and those cheap models with pistons running directly on the aluminum casting. The latter kind, sometimes seen in really cheap lawn ...

dyarker wrote:Side note: At one place I worked required calibration check every other year. Turned out to be cheaper to buy a new DMM.

So did the place I worked in California, until they realised that there is no calibration procedure for Fluke DMMs. There are no adjustments. They either work or they don't.

You might also consider reverse voltage protection in case someone wires the power leads backwards. That is just a rectifier diode wired (normally reversed biased) across the power supply terminals and AFTER the fuse.

Geez Bob, You seem to work on audio projects when the rainy season commences... How did you know that the our monsoons started already? I bet you checked the Seattle weather! Yes it is raining and the shingles are only half installed. That new plastic roofing underlay (A new replacement for roofing...

This circuit is quite simple and easy to breadboard. Why not take an hour, build it up, place it on the test bench and put it through its paces? (of course the roof comes first :grin: ) Thanks Robert. I have a couple of older audio amps that were given to me. I plan to gut the output section of one...

Hi Guys. I guess I'm guilty of withholding what I'm doing, like so many other posters. I should kick myself. Here is what I'm working on, a schematic I made last year: http://s1.postimage.org/HwO1A.jpg The input signal is minus 10 dB (-10dB) for max signal out. The drawing looks like it might be &qu...

If anyone else has the opportunity to try something like this, I would be interested in what you come up with. I am looking for an infrared source in a pretty tight band near 10um, which is said to be the best wavelength of radiant heat for shining on the human body. Did you mean that you need to e...

Oh, what the heck .... I can help keep an old OP going. Anyone remember the Raytheon CK722? It was one of the most popular hobbyist transistors of the 1960s. You could get a bag of 10 of the things for a buck from Poly-Paks. 'Course, the Poly-Pak transistors didn't always work as advertised...... I...

Yes, they may have gone belly-up in the last decade, closed or changed the web site, or whatever. A company with the same name does show to exist by LosAngeles area, with not much data about them. Yeah, this "American Computer Company" smells bogus. There is no such entry in Wikipedia or ...

Hi guys. I seek advice. Imagine an op-amp circuit with a fixed-by-feedback gain of 10 (20dB). Call this one IC2. Now imagine another identical 10X op-amp stage IC1 driving IC2. It has no feedback from its own output, but has feedback from the output of IC2. Both ICs are in that same feedback loop. I...

Hi Janitor, I used MIGWIZ. It made a compressed file of the drive and is now saved on the thumb drive, but it's only about 1.1GB. It didn't save everything, so I'm thinking of using JerryR's idea instead of using custom settings and specifying every file in Migwiz. Hi Jerry, I googled your suggestio...

There is also the Windows " Files and Settings Transfer Wizard ." Normally located in the System Tools area. If it isn't there. Check: X:\windows\system32\usmt\migwiz.exe Note: If your using XP versions earlier than XP SP3, you may not have it. Hi Janitor, Thanks for the reply. My system ...

I would like to back up my entire hard Drive C. It has about 22 Gigs of files in drive C, so I bought a 32 Gig Data Traveller thumb drive for the backup. Has anyone done this before? Moving the drive C icon to the thumb drive only puts a "shortcut" icon on it. Can you do it with the Alt or...