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I will jump in with my explanation.? Negative feedback does nothing for noise on the input.? That input noise looks just like a valid signal to the circuit input so it gets amplified at the same

I found the manual for my allen-bradley series 70 mod pots instant prototypes. It's been scanned and I'll upload it to the files section here. In the process, I also found an ordering guide for the

https://youtu.be/A4IGmQKUV2w wrote:

Here’s my explanation of negative feedback. 1. A group of happy cheerful children are playing noisily as they enter the house through the door (input) 2. The beleaguered father is just leaving the

The resistor did the trick and dropped the 5V rail to the expected value, so I worked through the cut links reconnecting each in turn and checking the voltages and total current. The little beauty

A noisy amplifier or a noisy oscillator connected to a reference source will do whatever it takes to follow the reference source signal. This applies for slow reference noise only which means noise is

Walter, I know it’s not real gold. But it’s a gold color.

I found another unit that has the exact same enclosure as mine: https://w140.com/tekwiki/images/9/9a/067-0502-00.JPG

That is brass, not gold. the top plating (nickel or something) is on top of a brass blank.? not as exotic as you might think. brass is very easy to engrave, which makes it popular for this task. when

When I had it in the A mode I measured approximately 20nS delay between gate A and gate B but my sweep out was just plain rubbish noisy nowhere near triangle and at wrong place. I found better place

An update on my 127. I got the power supplies running (one 6080 and a 12AX7/ECC83 were down to air) and the rails were all within spec, though +225V was a whisker low at 221V. While I was testing the

You're right, Eric! But, by now, I believe everyone reading this post knows that. And it is what I said right from the beginning, triangle generator is not working (I mean, I didn't say there is no

sorry, I don't really follow - would you mind rephrasing? thanks! <Brucekareen@...> wrote:

I’ll get all the appropriate caps tomorrow. I haven’t worked on the interior yet. Eric, how easy is it to replace those filter caps? It seems like a real hassle because of the ceramic strips on

As Dave wrote this could be because of missing load at W991. Does adding a 470-ohm 0.5W to ground from W991 reduce it to ~ 5.2V? Ozan

Cleaning it up revealed something else I had never seen before. Not that I’m an expert or anything, but this is new to me. The lettering of serial number is gold. I’ve always seen it black... Has

Hi Ondrej, Less than perfect videos are OK. My main concern is misunderstanding the state of the 485 and suggesting the wrong path. It is important to look at B gate during 5/2/1n setting of A because

I started a video about 5 times always ended up interrupted or doing some mistake I can send you link to those attempts because if you forgive the complete blabbering you may see something but my

What is the time/div setting? Your gate pulses are about 2x the length of what I measure in 1ns/div setting. Polarity of the sweep is opposite of what it should be (note that internally it has a

Negative feedback reduces the amplitude of signals that do not appear at the input point of the feedback circuit. Thus, it will reduce noise generated within the feedback loop through degeneration,