wattsabundant's latest activity

The data sheet tells it all. Who knows what it sounds like, but it does protect itself.

As one of my post retirement jobs, I'm doing repairs here and there for a local shop, Stereo Lab, In Columbus Ohio. Many years ago...

Every time you replace the fuse you do at least $50 more damage. With both output modules removed, bring it up with a 60 watt bulb or...

I have the drop-in relay board. Also have a few of the power switches. Highly recommend my triac power switching board to avoid switch...

Jump on it. URIE is high quality pro gear. If you don’t like it, I’ll buy it.

An oscilloscope is of use only if you have a decent oscillator. The HP 204 is cheap, plentiful, and relatively low distortion. Digital...

A cheap load bank can be made with hot water tank heaters. Home depot has a 240 volt version that is very close to 8 ohms. Downside is...

The 4000 is a disaster waiting to happen. It was designed before double sided boards with plated holes were available. It has a mother...

Transistor failure modes are open and shorted. Any meter with a diode function will meet this requirement. This includes $10 versions...

Well, you've certainly been busy. A few thoughts: I'm not sure what the quality of the pots are, but it is a minor concern for...

Sometimes you do things, not because you have to, but because you can. As I'm now retired I can take the time to mark up the schematic...

I’ve got a pile of the original jacks for the 200. Bought them last year when a surplus place was closing up shop. If you want exact...

I didn't get very far and abandoned it.

I'm not sure that shorting type is such a god idea. The 2000 I tried was noisey and I wondered if the shorting current in the ground...