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Hi Chris, Yes, there are many "proofs" that reveal various misconceptions about negative feedback. Many of them start with a kernel of truth, but then veer off into the weeds. Unfortunately, it is

R155 should be 820-ohm, R290 changed from 1k-ohm to 820-ohm in later revisions. They were both upgraded to 0.5W from 0.25W. What value do you have for R155 and R290 now? It makes a difference in

Tom is right. Negative feedback can only reduce the noise introduced by the amplifier itself. If the system works properly, the input will be perfectly amplified - with no noise added by the

A3 1 uF 50v nonplzd 505-MKS2C041001FJC00 Film capacitor 1uF 63 Volt 5% That is an error in my very old list. It should be 4.7uF

I had made a mistake on the round leaded ones. They are leaky the same way as the square leaded ones. The bend in the leads is opposite, Base is to the back instead of the front. I apologize for any

I decided to further test the ones I had pulled out of various pieces because of the leakage. I know they test as a diode. The round lead 0367 types with the oxidation on the leads close to the body

That's exactly the "not even wrong" attribution that I warned about. Your example has nothing at all to do with negative feedback, and it horribly muddies the waters to shoehorn negative feedback into

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: